A First-Time HomebuilderBuilding a house is complicated. Learning about building science, materials, and construction through research and documentation.Zola2025-12-31T00:00:00+00:00https://www.afirsttimehomebuilder.com/atom.xmlRenovating a 1950s House: Project Introduction2025-12-31T00:00:00+00:002025-12-31T00:00:00+00:00https://www.afirsttimehomebuilder.com/renovation/introduction/<h2 id="welcome-to-my-renovation-journey">Welcome to My Renovation Journey</h2>
<p>I'm documenting my journey renovating a 1950s house from the ground up, applying modern building science principles. Whether you're planning a similar renovation or just curious about building science in practice, this series will show you the real-world challenges, solutions, and costs involved in upgrading a post-war home.</p>
<h2 id="the-house">The House</h2>
<p>This 1950s home comes with all the typical characteristics of its era:</p>
<ul>
<li>Original construction methods and materials</li>
<li>Single-pane windows</li>
<li>Minimal insulation</li>
<li>Outdated mechanical systems</li>
</ul>
<h2 id="project-goals">Project Goals</h2>
<h3 id="energy-efficiency">Energy Efficiency</h3>
<p>My primary goal is to dramatically improve the home's energy performance while respecting its original character. This includes:</p>
<ul>
<li><strong>Upgrading insulation</strong> throughout the building envelope</li>
<li><strong>Installing high-performance windows</strong> </li>
<li><strong>Improving air sealing</strong> to reduce infiltration</li>
<li><strong>Modernizing HVAC systems</strong> for better comfort and efficiency</li>
</ul>
<h3 id="building-science-integration">Building Science Integration</h3>
<p>I want to apply modern building science principles to ensure:</p>
<ul>
<li>Proper vapor and moisture management</li>
<li>Effective thermal bridging reduction</li>
<li>Balanced ventilation for indoor air quality</li>
<li>Durable assemblies that will last decades</li>
</ul>
<h3 id="practical-approach">Practical Approach</h3>
<p>While modernizing, I aim to:</p>
<ul>
<li>Maintain original design elements where possible</li>
<li>Keep costs manageable and techniques DIY-friendly</li>
<li>Document the original construction for future reference</li>
<li>Balance perfection with pragmatic solutions</li>
</ul>
<h3 id="learning-and-sharing">Learning and Sharing</h3>
<p>Throughout this project, I'll be:</p>
<ul>
<li>Documenting every step of the process</li>
<li>Sharing lessons learned and mistakes made</li>
<li>Testing building science theories in practice</li>
<li>Creating a resource for others facing similar renovations</li>
</ul>
<h2 id="what-to-expect">What to Expect</h2>
<p>I'll be documenting:</p>
<ul>
<li><strong>Planning phase</strong>: Research, design decisions, and permitting</li>
<li><strong>Demolition discoveries</strong>: What we find behind the walls</li>
<li><strong>Assembly details</strong>: How we're rebuilding each component</li>
<li><strong>Material choices</strong>: Why I chose specific products</li>
<li><strong><a href="https://www.afirsttimehomebuilder.com/renovation/cost-tracking/">Cost tracking</a></strong>: Realistic budgets and actual expenses</li>
<li><strong>Performance results</strong>: Measured improvements in energy use</li>
</ul>
<h2 id="why-this-matters">Why This Matters</h2>
<p>1950s homes represent a significant portion of the housing stock in North America. Many homeowners face similar challenges:</p>
<ul>
<li>High energy bills from poor insulation and air leakage</li>
<li>Comfort issues with cold floors and drafty rooms</li>
<li>Outdated electrical, plumbing, and HVAC systems</li>
<li>Uncertainty about how to modernize without causing moisture problems</li>
<li>Limited resources on DIY-friendly deep energy retrofits</li>
</ul>
<p>By documenting this renovation with real costs, real mistakes, and real solutions, I hope to provide a practical guide for others looking to upgrade their mid-century homes using modern building science principles.</p>
<h2 id="stay-tuned">Stay Tuned</h2>
<p>Follow along as I navigate the challenges and opportunities of bringing a 1950s house into the modern era. I'll share detailed posts about specific systems, materials, and techniques as the project progresses.</p>
<p>Let's learn together how to make our older homes more comfortable, efficient, and durable!</p>
Renovation Cost Tracking2025-12-31T00:00:00+00:002025-12-31T00:00:00+00:00https://www.afirsttimehomebuilder.com/renovation/cost-tracking/<h1 id="cost-tracking-dashboard">Cost Tracking Dashboard</h1>
<p>One of the most important aspects of any renovation is understanding where the money goes. Below is a real-time view of project costs broken down by category.</p>
<div class="cost-tracker">
<div class="cost-summary">
<div class="total-cost">
<h3>Total Project Cost</h3>
<div class="total-breakdown">
<div class="total-item">
<span class="total-label">Actual Paid:</span>
<span class="amount" id="actual-total">$0</span>
</div>
<div class="total-item">
<span class="total-label">Quoted (Pending):</span>
<span class="amount quoted" id="quoted-total">$0</span>
</div>
<div class="total-item grand">
<span class="total-label">Total Committed:</span>
<span class="amount" id="grand-total">$0</span>
</div>
</div>
<div class="budget-visualization">
<div class="budget-bar-container">
<div class="budget-bar-actual" id="budget-bar-actual" style="width: 0%"></div>
<div class="budget-bar-quoted" id="budget-bar-quoted" style="width: 0%"></div>
</div>
<div class="budget-labels">
<span class="budget-label">$0</span>
<span class="budget-label">Planned Budget: $100,000</span>
</div>
<div class="budget-remaining">
<span id="budget-remaining-text">$100,000 remaining</span>
</div>
</div>
<p class="subtitle">Updated: December 2025</p>
</div>
</div>
<div class="cost-categories">
<div class="cost-item" data-category="planning">
<div class="cost-header">
<h4>Planning & Design</h4>
<span class="cost-amount">$0</span>
</div>
<ul class="cost-details">
<li data-status="quoted"><span>Structural engineering</span><span>$5,000</span></li>
</ul>
</div>
<div class="cost-item" data-category="demolition">
<div class="cost-header">
<h4>Demolition</h4>
<span class="cost-amount">$0</span>
</div>
<ul class="cost-details">
<li data-status="actual"><span>Brick Chimney removal</span><span>$2,500</span></li>
<li data-status="actual"><span>Dry wall removal</span><span>$2,000</span></li>
<li data-status="quoted"><span>Oil tank removal</span><span>$1900</span></li>
</ul>
</div>
<div class="cost-item" data-category="envelope">
<div class="cost-header">
<h4>Building Envelope</h4>
<span class="cost-amount">$0</span>
</div>
<ul class="cost-details">
<li data-status="quoted"><span>Windows & doors</span><span>$7,913</span></li>
</ul>
</div>
<div class="cost-item" data-category="mechanical">
<div class="cost-header">
<h4>Mechanical Systems</h4>
<span class="cost-amount">$0</span>
</div>
<ul class="cost-details">
<li data-status="quoted"><span>Central Heatpump</span><span>$13,500</span></li>
<li data-status="quoted"><span>Water heater</span><span>$1,905</span></li>
<li data-status="quoted"><span>Ductwork</span><span>$4,710</span></li>
</ul>
</div>
<div class="cost-item" data-category="electrical">
<div class="cost-header">
<h4>Electrical & Plumbing</h4>
<span class="cost-amount">$0</span>
</div>
<ul class="cost-details">
<li data-status="quoted"><span>Electrical upgrades</span><span>$12,900</span></li>
</ul>
</div>
<div class="cost-item" data-category="labor">
<div class="cost-header">
<h4>Labor</h4>
<span class="cost-amount">$0</span>
</div>
<ul class="cost-details">
<li data-status="quoted"><span>Window Installation</span><span>$10,000</span></li>
</ul>
</div>
</div>
</div>
<script>
// Calculate and update all cost totals dynamically
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function parseCost(costString) {
const match = costString.replace(/,/g, '').match(/\$?(\d+\.?\d*)/);
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minimumFractionDigits: 0,
maximumFractionDigits: 0
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let grandTotal = 0;
let actualTotal = 0;
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actualBar.style.width = Math.min(actualPercentage, 100) + '%';
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quotedBar.style.width = Math.min(totalPercentage, 100) + '%';
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const percentUsed = ((grandTotal / plannedBudget) * 100).toFixed(1);
remainingText.textContent = formatCurrency(remaining) + ' remaining (' + percentUsed + '% used)';
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remainingText.textContent = formatCurrency(grandTotal - plannedBudget) + ' over budget!';
remainingText.style.color = '#e53e3e';
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document.addEventListener('DOMContentLoaded', updateCostTotals);
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</script>
<h2 id="notes-on-budget">Notes on Budget</h2>
<p><em>This is placeholder data representing initial estimates. Actual costs will be tracked and updated throughout the project. Categories may shift as the project evolves and unexpected needs arise.</em></p>
<p><strong>Budget Philosophy</strong>: I'm prioritizing the building envelope and mechanical systems to maximize long-term energy savings and comfort. While this increases upfront costs, the investment should pay dividends through reduced operating costs and improved durability.</p>
Air and Vapor Barriers for Beginners2025-04-01T00:00:00+00:002025-04-01T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/air-and-vapor-barriers/<h2 id="understanding-air-and-vapor-barriers">Understanding Air and Vapor Barriers</h2>
<p><strong>Source:</strong> <a rel="noopener" target="_blank" href="https://www.youtube.com/watch?v=yrHjqOMAZno">Air Barriers vs Vapor Barriers | You NEED To Know The Difference</a></p>
<h3 id="air-barriers">Air Barriers</h3>
<ul>
<li>Keep outside air from leaking into your home.</li>
<li>Help prevent warm, humid air from meeting cooler surfaces indoors (which can lead to condensation).</li>
</ul>
<h3 id="vapor-barriers">Vapor Barriers</h3>
<ul>
<li>Slow down the movement of moisture through materials.</li>
<li>Limit how much water vapor passes through walls.</li>
</ul>
<h3 id="why-it-matters">Why It Matters</h3>
<ul>
<li>Even a small gap in drywall can let a significant amount of moist air move behind your walls, leading to potential mold or rot issues.</li>
<li>Air leakage is often a bigger threat than vapor diffusion, so sealing cracks or holes is essential.</li>
</ul>
<hr />
<h3 id="experiment-results">Experiment Results</h3>
<ul>
<li><strong>Vapor diffusing through a 4×8 sheet of drywall:</strong><br />
315 mm of water = 0.3 liters</li>
<li><strong>If there is a 1-square-inch hole in the drywall:</strong><br />
28390 mm of water = 28.3 liters</li>
</ul>
<blockquote>
<p><strong>Note:</strong> A material’s vapor permeability (its ability to let vapor pass) does not automatically make it a good air barrier. Both air and vapor barriers work together to keep your home comfortable and protected from moisture damage.</p>
</blockquote>
Choosing the right stainless steel2025-01-24T00:00:00+00:002025-01-24T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/stainless-steel/<p>Source: <a rel="noopener" target="_blank" href="https://youtu.be/7xqT45GPTE8">Building a Shed</a></p>
<p>When building a shed, selecting the right materials is crucial for ensuring its durability and longevity. One important material to consider is stainless steel, which is known for its corrosion resistance and strength. However, not all stainless steel is the same; different types offer varying levels of corrosion resistance.</p>
<p>When using stainless steel, we need to consider the level of corrosion resistance required.</p>
<ul>
<li>For general outdoor use, 304/305 stainless steel is sufficient.</li>
<li>In coastal environments, 316 stainless steel is necessary to protect against salt corrosion.</li>
</ul>
<p>Choosing the right type of stainless steel ensures the longevity and durability of your shed.</p>
<p>The numbers (e.g., 304, 305, 316) refer to the specific grades of stainless steel, which indicate their composition and properties.
For more information, you can refer to <a rel="noopener" target="_blank" href="https://www.kloecknermetals.com/blog/a-short-guide-to-grades-of-stainless-steel/">Guide to Stainless Steel Grades</a>.</p>
<p>By understanding the differences between stainless steel grades, you can make an informed decision and choose the best material for your shed, ensuring it stands the test of time.</p>
Daylight Calculator2024-11-16T00:00:00+00:002024-11-16T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/daylight-calculator/<h2 id="exploring-daylight-in-your-home">Exploring Daylight in Your Home</h2>
<p>Understanding how daylight interacts with a space when designing a home is crucial for comfort and energy efficiency. One powerful tool to help with this is the <a rel="noopener" target="_blank" href="https://andrewmarsh.com/software/daylight-box-web/">Daylight Box Web</a>.</p>
<h3 id="what-is-the-daylight-box-web">What is the Daylight Box Web?</h3>
<p>The Daylight Box Web is a Software that allows you to explore how light enters and moves through a room. By loading weather data (.epw files), you can run simulations to see how different factors affect daylight in your location.</p>
<h3 id="key-features">Key Features</h3>
<h4 id="spatial-daylight-autonomy-sda">Spatial Daylight Autonomy (sDA)</h4>
<p>Spatial Daylight Autonomy (sDA) measures the percentage of the total room area that receives sufficient daylight for more than 50% of the time. This helps you understand how well-lit your room will be throughout the day.</p>
<p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/spatial_daylight_autonomy.7f8d9807e8ae656a.webp"
alt="Spatial Daylight Autonomy"
width="1200"
loading="lazy">
<img src="https://www.afirsttimehomebuilder.com/processed_images/spatial_daylight_autonomy_result.e66a91bb4a412ae1.webp"
alt="sDA Results"
width="1200"
loading="lazy">
</p>
<h4 id="annual-sunlight-exposure-ase">Annual Sunlight Exposure (ASE)</h4>
<p>Annual Sunlight Exposure (ASE) evaluates glare by measuring when a space receives more than 1000 lux of sunlight. Ideally, no more than 10% of a room should exceed this threshold for more than 250 hours per year.</p>
<p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/ase_glare.f8f27bf0b8aa95f7.webp"
alt="Annual Sunlight Exposure"
width="1200"
loading="lazy">
<img src="https://www.afirsttimehomebuilder.com/processed_images/ase_glare_result.8bb7f357a08daf97.webp"
alt="Annual Sunlight Exposure Result"
width="1200"
loading="lazy">
</p>
<h3 id="customizing-your-space">Customizing Your Space</h3>
<p>The Software allows you to adjust various parameters to see their impact on daylight:</p>
<ul>
<li><strong>Room Size</strong>: Experiment with different room dimensions to see how size affects light distribution.</li>
<li><strong>Window Settings</strong>: Modify window sizes and positions to optimize natural light.</li>
<li><strong>Wall Settings</strong>: Change wall colors and materials to see how they reflect or absorb light.</li>
</ul>
<table><thead><tr><th style="text-align: center">
<img src="https://www.afirsttimehomebuilder.com/processed_images/glass_settings.3d28dda9192408ba.webp"
alt="Glass Settings"
width="1200"
loading="lazy">
</th><th style="text-align: center">
<img src="https://www.afirsttimehomebuilder.com/processed_images/wall_settings.410316ab4aa49e6f.webp"
alt="Wall Settings"
width="1200"
loading="lazy">
</th></tr></thead><tbody>
</tbody></table>
<h3 id="exploring-overhangs">Exploring Overhangs</h3>
<p>Overhangs can significantly affect how sunlight enters your home. The Software lets you explore different overhang designs to find the best balance between shading and natural light.</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/window_overhangs.158a6f2a71d68a24.webp"
alt="Window Overhangs"
width="1200"
loading="lazy">
<h3 id="conclusion">Conclusion</h3>
<p>This tool can provide valuable insights into how daylight interacts with your home. Understanding these dynamics allows you to make informed design decisions that enhance comfort and energy efficiency.</p>
<p>Explore the <a rel="noopener" target="_blank" href="https://andrewmarsh.com/software/daylight-box-web/">Daylight Box Web</a> today and start optimizing your home's daylight performance!</p>
Visualization of Climate Data2024-11-11T00:00:00+00:002024-11-11T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/climate-visualize/<h2 id="table-of-contents">Table of Contents</h2>
<ol>
<li><a href="https://www.afirsttimehomebuilder.com/blog/climate-visualize/#introduction">Introduction</a></li>
<li><a href="https://www.afirsttimehomebuilder.com/blog/climate-visualize/#tools-for-climate-data-visualization">Tools for Climate Data Visualization</a>
<ul>
<li><a href="https://www.afirsttimehomebuilder.com/blog/climate-visualize/#cbe-clima-tool">CBE Clima Tool</a></li>
<li><a href="https://www.afirsttimehomebuilder.com/blog/climate-visualize/#climate-consultant">Climate Consultant</a></li>
</ul>
</li>
<li><a href="https://www.afirsttimehomebuilder.com/blog/climate-visualize/#conclusion">Conclusion</a></li>
</ol>
<h2 id="introduction">Introduction</h2>
<p>Climate data for locations around the world can be found on sources such as <a rel="noopener" target="_blank" href="https://www.ladybug.tools/epwmap/">Ladybug - EPWmap</a>. These data points are crucial for the home design process, helping to ensure comfort and energy efficiency.</p>
<h2 id="tools-for-climate-data-visualization">Tools for Climate Data Visualization</h2>
<p>Several tools can visualize this data effectively. Below are some recommended tools:</p>
<h3 id="cbe-clima-tool">CBE Clima Tool</h3>
<p>The <a rel="noopener" target="_blank" href="https://clima.cbe.berkeley.edu/">CBE Clima Tool</a> allows the visualization of climate data without requiring installation. It provides various visualization options to help understand the climate conditions of a specific location.</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/Inverness_CAN_annual_wind_rose_SI.125401a1ea5c9ccf.webp"
alt="Showing the annual wind"
width="1200"
loading="lazy">
<p>For example, this graph explains the following:</p>
<blockquote>
<p>The wind rose chart shows that winds are predominantly southerly and westerly, with most wind speeds being light to moderate, and only occasional high winds.</p>
</blockquote>
<h3 id="climate-consultant">Climate Consultant</h3>
<p>The <a rel="noopener" target="_blank" href="https://www.sbse.org/resources/climate-consultant">Climate Consultant</a> tool not only visualizes climate data but also provides design suggestions to ensure comfortable living conditions. It is a comprehensive tool for architects and designers.</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/climate_consultant_psychrometric.da7201c68baaa938.webp"
alt="Tool showing a view of tool"
width="1200"
loading="lazy">
<h2 id="conclusion">Conclusion</h2>
<p>Using these tools, you can gain valuable insights into the climate conditions of your location, which can inform better design decisions for your home. Proper climate data visualization can lead to more comfortable and energy-efficient living spaces.</p>
What Does a Septic System Cost?2024-08-23T00:00:00+00:002024-08-23T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/septic-cost/<p>When planning for a septic system in the Inverness Area of Cape Breton, I received quotes for various systems. Here are the details:</p>
<h2 id="c2-system">C2 System</h2>
<ul>
<li><strong>Quoted Cost:</strong> $18,700</li>
</ul>
<h3 id="issues-discovered">Issues Discovered</h3>
<p>After conducting a soil test, we found that the C2 system was not suitable due to:</p>
<ul>
<li>Poor soil quality</li>
<li>Insufficient slope</li>
</ul>
<p>As a result, the engineer recommended an alternative system.</p>
<h2 id="peat-moss-system">Peat Moss System</h2>
<ul>
<li><strong>Quoted Cost:</strong> $43,000</li>
</ul>
<h2 id="eco-flo-system">Eco-Flo System</h2>
<ul>
<li><strong>Quoted Cost:</strong> $26,747</li>
</ul>
<h3 id="conclusion">Conclusion</h3>
<p>The initial quotes provides a starting point however it's essential to conduct thorough testing and consult with engineers to determine the most suitable system for your specific needs.</p>
U-Value vs R-Value2024-05-16T00:00:00+00:002024-05-16T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/r-value-vs-u-value/<h3 id="u-value">U-Value</h3>
<p>The insulation performance of a material. How much heat flow or heat loss occurs.
Lower numbers = better performance</p>
<h3 id="r-value">R-Value</h3>
<p>The thermal resistance of a material. Resistance against heat flow or heat loss.
Higher numbers = better performance</p>
<h3 id="conversion">Conversion</h3>
<p>To convert between them it's the inverse (1/X)</p>
<h3 id="metric-and-imperial-values">Metric and Imperial values</h3>
<p>Important to pay attention to the units!</p>
<p>There is both metric and imperial units of both</p>
<p>R-value in imperial: ft2·°F·h/BTU
R-value in metric is called RSI-Value: m2·K/W </p>
<p>Also need to pay attention to the distance:
RSI Value per millimeter vs R-Value per inch</p>
<p>There is Metric-U: W/m2·K and -UImperial: Btu/h·ft2·F</p>
<h2 id="convert-between-metric-and-imperial">Convert between Metric and Imperial</h2>
<p>Convert an RSI Value to an R-Value, multiply the RSI Value by 5.678.</p>
<p>Convert an R-Value to an RSI Value, divide the R-Value by 5.678.</p>
<h3 id="common-values">Common Values</h3>
<table><thead><tr><th>Material</th><th>R-Value (imperial)</th><th>U-Value (imperial)</th><th>u-Value (metric)</th></tr></thead><tbody>
<tr><td>Rockwool 1" Comfortbatt</td><td>4</td><td>0.25</td><td>1.42</td></tr>
<tr><td>Rockwool 4" Comfortbatt</td><td>16</td><td>0.0625</td><td>0.35</td></tr>
<tr><td>Triple Plane Glass, Low-E, Argon</td><td>5.4</td><td>0.184</td><td>1.04</td></tr>
<tr><td>Vetta Window Glass C97</td><td>10.92</td><td>0.091</td><td>0.52</td></tr>
<tr><td>Vetta Window Glass E92</td><td>7.8</td><td>0.127</td><td>0.725</td></tr>
<tr><td>Polytech Window Glass</td><td>4.5</td><td>0.22</td><td>1.26</td></tr>
</tbody></table>
<h3 id="sources">Sources</h3>
<ol>
<li><a rel="noopener" target="_blank" href="https://www.allweatherwindows.com/the-pros/architect/glass-performance-chart/">Glass performance</a></li>
<li><a rel="noopener" target="_blank" href="https://glassed.vitroglazings.com/topics/the-difference-between-r-value-and-u-value">R vs U value</a></li>
<li><a rel="noopener" target="_blank" href="https://web.archive.org/web/20240224085255/https://www.vettawindows.com/windows">Vetta Window</a></li>
<li><a rel="noopener" target="_blank" href="https://www.betterhomesbc.ca/faqs/convert-u-factor/">How can I convert an imperial U-factor to a metric U-factor?</a></li>
<li><a rel="noopener" target="_blank" href="https://www.betterhomesbc.ca/products/what-is-r-or-rsi-value/">What is R (or RSI) value of insulation?</a> </li>
</ol>
Energy Loss2024-05-13T00:00:00+00:002024-05-13T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/energy-loss/<p>Where is energy lost in buildings?</p>
<p>When using the IECC 2021 Energy Code it looks like this:</p>
<table><thead><tr><th>Aspect</th><th>Heat loss %</th></tr></thead><tbody>
<tr><td>Windows + Exterior Doors</td><td>34.7%</td></tr>
<tr><td>Exterior Walls</td><td>22.7%</td></tr>
<tr><td>Slab / Walls to Ground</td><td>13%</td></tr>
<tr><td>Air Leakage</td><td>11%</td></tr>
<tr><td>Fresh Air Ventilation</td><td>9.7%</td></tr>
<tr><td>Roof</td><td>6.5%</td></tr>
</tbody></table>
<img src="https://www.afirsttimehomebuilder.com/processed_images/energy_loss_code_build.ed34cc40f94617fb.webp"
alt="alt text"
width="1200"
loading="lazy">
<p>Quite Similar for passive house build:</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/passive_house_enenergy_losses.6ad317f57089cf95.webp"
alt="alt text"
width="1200"
loading="lazy">
<p>But the overall energy loss is a lot lower.</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/energy_loss_code_vs_passive.381ea03ea4f43eaf.webp"
alt="alt text"
width="1200"
loading="lazy">
<p>The Energy loss for windows is as follows:</p>
<ol>
<li>Conduction at Window Frame</li>
<li>Conduction at Glass</li>
<li>Thermal Bridge @ Window to Wall Connection</li>
<li>Thermal Bridge @ Glass Edge</li>
<li>Air Leaks @ Sash/Frame</li>
<li>Air Leaks @ Window-to-Wall Connection</li>
</ol>
<p>Recommendations for good windows:</p>
<ol>
<li>Fixed</li>
<li>In-swing, tilt/turn</li>
<li>Out-swing</li>
<li>Hopper</li>
<li>Lift+Slide</li>
</ol>
<p>Avoid:
Sliders, Pivot, Multi-fold accordion, Pass-through</p>
<p>R values for different frame materials:</p>
<table><thead><tr><th>Material</th><th>R-Value</th></tr></thead><tbody>
<tr><td>Aluminium</td><td>1.8</td></tr>
<tr><td>Vinyl</td><td>3.3</td></tr>
<tr><td>Wood</td><td>3.2</td></tr>
<tr><td>phC</td><td>3.9</td></tr>
<tr><td>phB</td><td>6.0</td></tr>
<tr><td>phA</td><td>8.1</td></tr>
</tbody></table>
<p>pHC/B/A are passive house graded frames.
The glass is not included</p>
<p>When looking at glass it's many questions that need to be answered.</p>
<p>For example a thick 2 pan glass window can deliver the same performance as a think 3 pane glass setup.
<img src="https://www.afirsttimehomebuilder.com/processed_images/thickness_of_glass_comparison.c9b1af343bd87533.webp"
alt="alt text"
width="1200"
loading="lazy">
</p>
<p>Avoid triple pane glass that has an Overall Thickness less than 1.5"!!
Otherwise you pay the premium but don't get the performance benefit</p>
<p>Air vs Argon makes a big difference, however there is a 1% loss of argon for each year.</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/argon_vs_air_difference.ee1bf957eeb4fcac.webp"
alt="alt text"
width="1200"
loading="lazy">
<p>Energy gain difference with different coatings:</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/glass_coating.e451eaaeafa46f44.webp"
alt="alt text"
width="1200"
loading="lazy">
<p>High gains also typically means more daylight entering through the windows.</p>
<h3 id="summary">Summary</h3>
<ol>
<li>Triple pane glass, ensure it's ticker than 1.5"</li>
<li>In-swing for egress windows, Lift+Slide for patio doors</li>
<li>Look into getting a passive house certified frame, can be cost effective</li>
<li>Argon filling</li>
</ol>
<p>source: <a rel="noopener" target="_blank" href="https://www.youtube.com/watch?v=ozRZ6xrt3Vw">Choosing and Using High-Performance Windows</a></p>
Air Tightness2024-04-13T00:00:00+00:002024-04-13T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/air-tightness/<p>The air-tightness of a building is defined as Air Changes per Hour.
It represents how many times the air within any given space is replaced in an hour at an indoor-outdoor air pressure of 50 pascals.</p>
<p>ACH = (Outside Air Intake) (ft^3/minute) x 60 / Volume of Space (ft^3)</p>
<table><thead><tr><th>ACH50</th><th>Quality</th></tr></thead><tbody>
<tr><td>7.5</td><td>Old Homes, Pre 1981</td></tr>
<tr><td>4.3</td><td>Average Home (Ontario)</td></tr>
<tr><td>3.5</td><td>2020 Building Code</td></tr>
<tr><td>2.5</td><td><a rel="noopener" target="_blank" href="http://www.nrcan.gc.ca/energy/efficiency/housing/new-homes/energy-star/14178">Energy Start v12.6</a></td></tr>
<tr><td>1.5</td><td><a rel="noopener" target="_blank" href="https://natural-resources.canada.ca/energy-efficiency/homes/professional-opportunities/become-energy-efficient-builder/details-the-r-2000-standard/20588">R-2000 Standard</a></td></tr>
<tr><td>1.0</td><td><a rel="noopener" target="_blank" href="https://web.archive.org/web/20180417150105/https://www.cmhc-schl.gc.ca/en/co/grho/grho_020.cfm">Net Zero Ready</a></td></tr>
<tr><td>0.6</td><td><a rel="noopener" target="_blank" href="https://buildingscience.com/documents/insights/bsi-025-the-passivhaus-passive-house-standard">Passivhaus</a></td></tr>
</tbody></table>
<p>Source: <a rel="noopener" target="_blank" href="https://www.barriersciences.com/achataglance">ACH at a Glance</a></p>
Exterior Cladding2024-03-27T00:00:00+00:002024-03-27T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/exterior-cladding-weights/<p>Source: <a rel="noopener" target="_blank" href="https://www.youtube.com/watch?v=YG65p5RN318">Passive House Building Science Details</a> </p>
<h2 id="exterior-insulation-loads">Exterior insulation Loads</h2>
<p>When attaching cladding to the exterior need to make sure the load is managed.
A couple of common siding and the weights are listed here:</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/cladding-loads-per-fastener.fbe73e5dc9453a3b.webp"
alt="alt text"
width="1200"
loading="lazy">
<img src="https://www.afirsttimehomebuilder.com/processed_images/cladding-weights.24967af60841070d.webp"
alt="alt text"
width="1200"
loading="lazy">
Condensation Management2024-03-27T00:00:00+00:002024-03-27T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/condensation-management/<p>Source: <a rel="noopener" target="_blank" href="https://www.youtube.com/watch?v=YG65p5RN318">Passive House Building Science Details</a> </p>
<p>In a <a href="/blog/perfect-wall">Perfect Wall assembly</a> all insulation is on the exterior.</p>
<p>However when mixing interior and exterior insulation it's important to maintain ratios between interior and exterior insulation.</p>
<p>However when mixing interior and exterior insulation it's important to maintain ratios between interior and exterior insulation.</p>
<p>The following table shows the assembly ratios that should be kept.
One can always increase the % on the exterior but not go higher on the inside!</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/ratio-interior-exterior-insulation.b8ddd664f8621a3e.webp"
alt="alt text"
width="1200"
loading="lazy">
<h2 id="2x4-framing">2x4 Framing</h2>
<table><thead><tr><th>Climate Zone</th><th>Minimum R</th><th>% Exterior</th></tr></thead><tbody>
<tr><td>4C</td><td>2.5</td><td>16%</td></tr>
<tr><td>5</td><td>5.0</td><td>28%</td></tr>
<tr><td>6</td><td>7.5</td><td>37%</td></tr>
<tr><td>7/8</td><td>10</td><td>43%</td></tr>
</tbody></table>
<h2 id="2x6-framing">2x6 Framing</h2>
<table><thead><tr><th>Climate Zone</th><th>Minimum R</th><th>% Exterior</th></tr></thead><tbody>
<tr><td>4C</td><td>3.75</td><td>16%</td></tr>
<tr><td>5</td><td>7.5</td><td>28%</td></tr>
<tr><td>6</td><td>11.25</td><td>37%</td></tr>
<tr><td>7/8</td><td>15</td><td>44%</td></tr>
</tbody></table>
<h2 id="fins-concealed-cavitites">Fins Concealed Cavitites</h2>
<p>If these are thin they can still create condensation issues as there is more heat leaving then getting into the space.</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/fins-included-in-air-barrier.513b0a508566c926.webp"
alt="alt text"
width="1200"
loading="lazy">
<p>Keep insulation / air barrier away from these spaces and add them outside of it.
<img src="https://www.afirsttimehomebuilder.com/processed_images/fins-excluded-in-air-barrier.e4eb87b2bfda1e20.webp"
alt="alt text"
width="1200"
loading="lazy">
</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/extras-excluded-in-air-barrier.eea4dd4b016bd8ea.webp"
alt="alt text"
width="1200"
loading="lazy">
Perfect Wall2024-02-25T00:00:00+00:002024-02-25T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/perfect-wall/<p>There are different techniques to insulate the house.
The classical method is having 2x4 or 2x6 wall framing. The interior between the studs is filled with batt insulation.
There are a number of options such as <a rel="noopener" target="_blank" href="https://www.rockwool.com/north-america/products-and-applications/products/comfortbatt/">ROCKWOOL Comfortbatt</a> or <a rel="noopener" target="_blank" href="https://www.rona.ca/en/building-supplies/insulation-16660/fiberglass">fiberglass</a> insulation.</p>
<p>However this method always seemed a bit strange to me as it means we have insulation on the inside, that is broken up by wooden studs.
Typically a layer of exterior insulation is applied.</p>
<p>In <a rel="noopener" target="_blank" href="https://www.airfoam.com/foamshield-perfect-walls-insulation.php"></a> discusses issues with the assembly and explains it based on a heat distribution image.
In the assembly shown below it can be seen how the cold/warm freezing layer (where the <a href="/terms/dew-point">dew point</a> is located) lies within the interior stud cavier.
<img src="https://www.afirsttimehomebuilder.com/processed_images/split_insulation.de07f2ade5e7d600.webp"
alt="alt text"
width="1200"
loading="lazy">
</p>
<p>And alternative way to approach wall insulation is what has been called "Perfect Wall" by <a rel="noopener" target="_blank" href="https://buildingscience.com/documents/insights/bsi-001-the-perfect-wall">Joseph Lstiburek</a></p>
<p>In this assembly all the insulation is on the exterior and none is on the inside.
The Heat Distribution with continues insulation shown in the video shows that this way the studs always stay on the warm side and the <a href="/terms/dew-point">dew point</a> is located outside.
<img src="https://www.afirsttimehomebuilder.com/processed_images/FoamShield-Continuous-Exterior-Insulation-Thermal-Profile.84efa68124bee37b.webp"
alt="alt text"
width="1200"
loading="lazy">
</p>
<p>This kind of wall assembly is also described in <a rel="noopener" target="_blank" href="https://www.bchousing.org/publications/IG-R22-Effective-Walls-Residential-Construction.pdf">Illustrated Guide - R22+ Effective Walls in Residential Construction in British Columbia</a> here it's just called "Exterior Insulation" assembly.</p>
<p>Another source is <a rel="noopener" target="_blank" href="https://www.airfoam.com/foamshield-perfect-walls-insulation.php">FoamShield Perfect Wall Assemblies Perfect Wall Assemblies</a></p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/exterior-insulation-assembly-bc.2c2c4f99fb24e9c7.webp"
alt="alt text"
width="1200"
loading="lazy">
<p>Effective Insulation Values at different Thickness of insulation levels</p>
<table><thead><tr><th>Thickness</th><th>With R-4 per inch</th><th>With R-5 per inch</th></tr></thead><tbody>
<tr><td>3 1/2"</td><td>18</td><td>21.5</td></tr>
<tr><td>4"</td><td>20</td><td>24.0</td></tr>
<tr><td>4 1/2"</td><td>22</td><td>26.5</td></tr>
<tr><td>5"</td><td>24</td><td>29</td></tr>
<tr><td>5 1/2"</td><td>26.0</td><td>31.5</td></tr>
<tr><td>6"</td><td>28.0</td><td>34</td></tr>
<tr><td>6 1/2"</td><td>30.0</td><td>36.5</td></tr>
<tr><td>7"</td><td>32.0</td><td>39.0</td></tr>
</tbody></table>
<p>Some materials that exist:</p>
<table><thead><tr><th>Type</th><th>R-Value per inch</th></tr></thead><tbody>
<tr><td><a rel="noopener" target="_blank" href="https://www.airfoam.com/eps-foam-insulation-properties.php">White Korolite® EPS</a></td><td>4.2 to 4.8</td></tr>
<tr><td><a rel="noopener" target="_blank" href="https://www.airfoam.com/eps-foam-insulation-properties.php">Gray Korolite® GPS</a></td><td>4.9</td></tr>
<tr><td><a rel="noopener" target="_blank" href="https://www.rockwool.com/north-america/products-and-applications/products/comfortboard-80/#Specifications&Sizes">ROCKWOOL Comfortboard® 80</a></td><td>4.2</td></tr>
</tbody></table>
Monopoly Framing2024-02-24T00:00:00+00:002024-02-24T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/monopoly-framing/<h2 id="method-summary">Method Summary</h2>
<p>Frame the house with a continuous air barrier around the whole house.</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/pure_monopoly_framing.60ea6e6ae2863875.webp"
alt="Monopoly Framed house from above"
width="1200"
loading="lazy">
<p>This image from <a rel="noopener" target="_blank" href="https://www.instagram.com/p/CEsI7DYDpaY/?img_index=1">Matt Risinger</a> shows the ZIP System sheathing running up the wall and on the roof.
The transition between is taped to make it airtight.</p>
<p>The overhangs are then attached on top of the sheathing, as can be seen here:</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/pure_monopoloy_framed_overhang.66cddefbbd992904.webp"
alt="Monopoly Framed house with overhangs added"
width="1200"
loading="lazy">
<h2 id="modified-monopoly-framing">Modified Monopoly Framing</h2>
<p>This method modifies the "pure" method but uses traditional trusses and then puts the sheathing on the underside of the overhanging trusses.
These are then taped with the sheathing on the walls to create a continuous air barrier.</p>
<p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/classical_overhang_framing.c9752c9fdd851e17.webp"
alt="alt text"
width="1200"
loading="lazy">
<img src="https://www.afirsttimehomebuilder.com/processed_images/underside_overhang_taping.f26bd8e0b8a3ccaa.webp"
alt="alt text"
width="1200"
loading="lazy">
</p>
<p>The interior cavity could be filled with spray foam or dense-packed cellulose.</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/monopoly_frame_cavity_interior.3fa8a11c0d2e7a85.webp"
alt="alt text"
width="1200"
loading="lazy">
<p>The modified version allows the usage of traditional framing techniques, making it easier for contractors and reducing costs.</p>
<h3 id="sources">Sources</h3>
<ol>
<li><a rel="noopener" target="_blank" href="https://youtu.be/sYDT17A6Cr4">Modified Monopoly Framing - Easier + Cheaper Method</a></li>
<li><a rel="noopener" target="_blank" href="https://www.youtube.com/watch?v=2DGxmBpzwOs">Tight Soffit Detail AKA Modified Monopoly Framing</a></li>
</ol>
Lumber Sizes2024-02-22T00:00:00+00:002024-02-22T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/lumber-sizes/<p>Source: <a rel="noopener" target="_blank" href="https://www.advantagelumber.com/sizes.htm">Advantagelumber</a></p>
<p>Wood is often talked about in dimension terms like 2x4 but are those the real sizes? Of course not, that would be too easy ....
The Nominal Sizes are the size when it's cut, but after drying and processing the sizes vary. Approximately the sizes below </p>
<table><thead><tr><th>Nominal Size</th><th>Actual Size (Imperial)</th><th>Actual Size (Metric)</th></tr></thead><tbody>
<tr><td>1x4</td><td>0.75″ x 3.50″</td><td>19mm x 90mm</td></tr>
<tr><td>1x5</td><td>0.75″ x 4.72″</td><td>19mm x 120mm</td></tr>
<tr><td>1x6</td><td>0.75″ x 5.50″</td><td>19mm x 140mm</td></tr>
<tr><td>1x4 +Plus®</td><td>0.83″ x 3.50″</td><td>21mm x 90mm</td></tr>
<tr><td>1x5 +Plus®</td><td>0.83″ x 4.72″</td><td>21mm x 120mm</td></tr>
<tr><td>1x6 +Plus®</td><td>0.83″ x 5.50″</td><td>21mm x 140mm</td></tr>
<tr><td>1x6 +Plus® XW™</td><td>0.83″ x 5.70″</td><td>21mm x 145mm</td></tr>
<tr><td>5/4x4</td><td>1.00″ x 3.50″</td><td>25mm x 90mm</td></tr>
<tr><td>5/4x5</td><td>1.00″ x 4.72″</td><td>25mm x 120mm</td></tr>
<tr><td>5/4x6</td><td>1.00″ x 5.50″</td><td>25mm x 140mm</td></tr>
<tr><td>5/4x8</td><td>1.00″ x 7.25″</td><td>25mm x 184mm</td></tr>
<tr><td>5/4x10</td><td>1.00″ x 9.25″</td><td>25mm x 235mm</td></tr>
<tr><td>5/4x12</td><td>1.00″ x 11.25″</td><td>25mm x 286mm</td></tr>
<tr><td>2x2</td><td>1.50″ x 1.50″</td><td>38mm x 38mm</td></tr>
<tr><td>2x4</td><td>1.50″ x 3.50″</td><td>38mm x 90mm</td></tr>
<tr><td>2x6</td><td>1.50″ x 5.50″</td><td>38mm x 140mm</td></tr>
<tr><td>2x8</td><td>1.50″ x 7.25″</td><td>38mm x 184mm</td></tr>
<tr><td>2x10</td><td>1.50″ x 9.25″</td><td>38mm x 235mm</td></tr>
<tr><td>2x12</td><td>1.50″ x 11.25″</td><td>38mm x 286mm</td></tr>
<tr><td>3x4</td><td>2.50″ x 3.50″</td><td>64mm x 90mm</td></tr>
<tr><td>3x6</td><td>2.50″ x 5.50″</td><td>64mm x 140mm</td></tr>
<tr><td>3x8</td><td>2.50″ x 7.25″</td><td>64mm x 184mm</td></tr>
<tr><td>3x10</td><td>2.50″ x 9.25″</td><td>64mm x 235mm</td></tr>
<tr><td>3x12</td><td>2.50″ x 11.25″</td><td>64mm x 286mm</td></tr>
<tr><td>4x4</td><td>3.50″ x 3.50″</td><td>90mm x 90mm</td></tr>
<tr><td>6x6</td><td>5.50″ x 5.50″</td><td>140mm x 140mm</td></tr>
</tbody></table>
Calculations for passive house design2024-02-19T00:00:00+00:002024-02-19T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/passive-house-calculation-sheets/<p>A standard for the design of energy-efficient houses is the <a rel="noopener" target="_blank" href="https://passiv.de/">"Passivhaus"</a> building concept that is maintained by a German institute.</p>
<p>Building Designers use the Passive <a rel="noopener" target="_blank" href="https://passivehouse.com/04_phpp/04_phpp.htm">House Planning Package</a>(~230EUR) to calculate all kinds of factors that go into a house</p>
<p>It's quite pricy at around 230EUR. however Passive House Canada provides an older version of the <a rel="noopener" target="_blank" href="https://www.passivehousecanada.com/downloads/Canadian_PH_Climate_Data.xlsx">House Planning Package with Canadian Climate information</a></p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/PHPP-electricity-calculation.445b1cd453dba296.webp"
alt="Sheet from the PHPP package showing steps for electricity calculation"
width="1200"
loading="lazy">
<p>It's possible to find some <a rel="noopener" target="_blank" href="https://storage.googleapis.com/warm/files/DESIGNERS-CERTIFICATION-GUIDANCE-PLEASE-READ-FIRST-v106.xlsx">Passivhaus Certification Design Guidance</a></p>
<p>Examples of filled-out versions of the documents are available in several places <a rel="noopener" target="_blank" href="https://passiv.de/downloads/04_phpp_V9.6b_Passive_House_End_of_Terrace.pdf">End-of-terrace Passive House</a>, <a rel="noopener" target="_blank" href="https://sustainableengineering.co.nz/wp-content/uploads/2021/10/EXPHC_20210325_MartinResidence_PHPP_V9.6a_USETHIS-1.pdf">MartinResidence</a></p>
Building Science Series #42024-01-24T00:00:00+00:002024-01-24T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/building-sciene-part4/<p>Source: <a rel="noopener" target="_blank" href="https://youtu.be/x8Sjqz6APp8?list=PLDYh81z-RhxguSANl-oP9zzg6EnjLGiPN">Build Science 101 - Episode 4</a> </p>
<h3 id="energy-efficiency-and-environmental-responsibility">Energy Efficiency and Environmental Responsibility</h3>
<p>Efficiency is a byproduct of comfort;
The one rule for comfort: Heat moves from hot to cold.</p>
<p>There are 3 forms of energy transfer.</p>
<p>Conduction</p>
<ul>
<li>passing through materials</li>
</ul>
<p>Convection</p>
<ul>
<li>the movement of particles, for example, air or water </li>
</ul>
<p>Radiation</p>
<ul>
<li>Energy that comes from a source and travels through space, e.g. sun rays</li>
</ul>
<h3 id="solar-gains">Solar gains</h3>
<p>For Radiation it's essential to consider the house orientation and glancing Area.</p>
<p>Generally want larger Glazing Area towards the sun in colder climates (Glazing Area = Window Area / Solid Wall Area)</p>
<p>The varying Sun Elevations over the year allow different configurations of solar gain.</p>
<ul>
<li>Overhangs provide shades in summer, with summer at a higher angle.</li>
<li>But on winter days, the sun is lower and allows it to penetrate deeper into the house.</li>
</ul>
<p>Additional helpers allow further control.
Shades outside allow a block of radiation before they enter the house.
If the shades are inside, they only block the light but not the Energy.</p>
<h3 id="environmental-responsibility">Environmental Responsibility</h3>
<ul>
<li>A House built to last a hundred years reduces the environmental footprint. Durability is key!
Material choices affect the impact of hardwood floor vs vinyl. </li>
<li>Hardwood can be resanded and last a long time; vinyl gets thrown out after X years</li>
<li>Consider the embedded Energy in the products you use.</li>
</ul>
Building Science Series #32024-01-23T00:00:00+00:002024-01-23T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/building-sciene-part3/<p>Source: <a rel="noopener" target="_blank" href="https://youtu.be/jUEm9ufEzfI?list=PLDYh81z-RhxguSANl-oP9zzg6EnjLGiPN">Build Science 101 - Episode 3</a> </p>
<h3 id="comfort-and-health">Comfort and Health</h3>
<p>Humidity should never get to elevated humidity levels (60% indoors)</p>
<p>Tuning of the building</p>
<ul>
<li>essential to understand the equations to reach the correct level of equipment
example: 70k BTU vs 17k BTU of heating/cooling required for the house</li>
</ul>
<p>BTU - British thermal unit
1 BTU ~ 1 Match worth of Energy
1 Ton = 12k BTU
for a 1000sqft space</p>
<p>"Dilution is not the Solution to Indoor Pollution" - Joseph Lstiburek</p>
<p>Materials have different off-gassing periods.
Some materials, such as Oil-based paints and spray-foam off-gases, quickly.</p>
<p>However, other products, such as Vinyl flooring, are off-gas for the product's lifetime.</p>
<p>Material carried into the house via the shoes can be just as important as the stuff coming on via the filter.</p>
<p>Always design an entryway where people can take off their shoes!</p>
<p>MERV higher = better filtration; at least 11 to 13 is recommended!
MERV 15 is close to HEPA quality and is used in hospitals for filtration.</p>
<img src="https://www.afirsttimehomebuilder.com/processed_images/merv_levels.8a852be844a40431.webp"
alt="Image showing the effect of filtration levels"
width="1200"
loading="lazy">
<p>A high level of control and filtration don't need many operatable windows in a building with excellent airtightness.
Always ask if this window really needs to be operable.</p>
<p>Summary:</p>
<p>Control:</p>
<ol>
<li>Build a really good envelope</li>
<li>Size the equipment properly</li>
<li>Install and Commission properly</li>
</ol>
<p>Health:</p>
<ol>
<li>Things we build with</li>
<li>Things we bring into the house</li>
<li>Things that piggy-back on us when getting into the house</li>
</ol>
Building Science Series #22024-01-22T00:00:00+00:002024-01-22T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/building-sciene-part2/<p>Source: <a rel="noopener" target="_blank" href="https://youtu.be/QthBdsyxAN8?list=PLDYh81z-RhxguSANl-oP9zzg6EnjLGiPN">Build Science 101 - Episode 2</a> </p>
<h3 id="durability-has-to-be-your-number-1-priority-durability-is-key">Durability has to be your number 1 priority <a rel="noopener" target="_blank" href="https://youtu.be/QthBdsyxAN8?list=PLDYh81z-RhxguSANl-oP9zzg6EnjLGiPN&t=229">Durability is key</a></h3>
<ul>
<li>Keep water away from the buildings; use overhangs that allow the water to fall down away from the building
<ul>
<li>This starts at the design phase; if elements are included to protect from the elements, then the builds are more forgiving</li>
<li>can use cheaper materials as they won't be challenged the same way
=> utilizing physics rather than chemistry</li>
</ul>
</li>
</ul>
<img src="https://www.afirsttimehomebuilder.com/processed_images/building-overhang-water.1ff3b45fbd62b695.webp"
alt="Image showing a house with overhang that allows the water to fall away from the building"
width="1200"
loading="lazy">
<h3 id="why-did-the-older-building-last">Why did the older building last?</h3>
<ul>
<li>because they were energy-INefficient
<ul>
<li>the heat could flow through it, which would make sure that wood dries from the heat inside</li>
</ul>
</li>
<li>the materials used could deal better with water; see <a href="/terms/hygric-buffer-capacity">Hygric buffer capacity</a></li>
</ul>
<h3 id="water-is-the-number-1-killer-of-buildings">Water is the number 1 killer of buildings</h3>
<p>80% of construction defect litigation is water-related</p>
<ul>
<li>Always ask: Where does the water go?</li>
</ul>
Building Science Series #12024-01-21T00:00:00+00:002024-01-21T00:00:00+00:00https://www.afirsttimehomebuilder.com/blog/building-sciene-part1/<p>Source: <a rel="noopener" target="_blank" href="https://youtu.be/fccl3znh2lE?list=PLDYh81z-RhxguSANl-oP9zzg6EnjLGiPN">Build Science 101 - Episode 1</a> </p>
<p>Why we Built? It all comes down to control of the environment. </p>