tag: insulation


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Demystifying Window Labels - SHGC? U-Factor?

Demystifying Window Labels - SHGC? U-Factor?

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Learn to decipher the codes on the window labels, and know what stats to look for in a good window (and what meets current building codes). In this video I'll explain in plain english what U-Factor means (and how to relate it to R-value), as well as the meaning to SHGC.

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Sticky House Wrap? - Delta Vent SA Review

Sticky House Wrap? - Delta Vent SA Review

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Sticky House Wrap? Yes, that makes perfect sense. I just completed my first job with Delta Vent SA a house wrap from German company Cosella-Dorken. Here's my impressions.

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Siga Wigluv - Air Sealing Tape Review

Siga Wigluv - Air Sealing Tape Review

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There are 4 things every house must control (in order of importance). 1. Water 2. Air 3. Vapor 4. Thermal Codes have only started to address air control and I think many builders in the US are behind in this area.

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How to Use Spray Foam to Meet New Energy Codes in Warm Climates

How to Use Spray Foam to Meet New Energy Codes in Warm Climates

As a builder in the hot and humid South, I regularly use spray foam in my houses. Spray foam makes it much easier to encapsulate my attic (where most HVAC systems in Texas live) so that my ducts are inside the thermal envelope.

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How to Insulate a Slab Foundation

How to Insulate a Slab Foundation

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Have you ever wondered why Slab Foundations aren't insulated? Two reasons, your house needs to be pretty efficient first before it's necessary, then it's darn hard to accomplish without making an easy path for termites. In this video I'll show you how we used Borated Treated Perimeter foam to insulate a Texas Slab on Grade Foundation.

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What Makes the Best Air Barrier?

What Makes the 'Best' Air Barrier?

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Planning a high-performance house in Massachusetts, Bill L asks the Green Building Advisor's Q&A Forum how to build in an air barrier that will stand the test of time. He's not sure that specialized construction tapes are the way to go.

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Home Energy-Efficiency Upgrades for Beginners

Home Energy-Efficiency Upgrades for Beginners

Advice for homeowners: Inspect your house for these common energy problems to get a better idea on where your money is best spent

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Indoor-Air Quality and Ventilation for Homes in Hot-Humid Climates

Indoor-Air Quality and Ventilation for Homes in Hot-Humid Climates

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The weather in the Southern United States poses a unique challenge to the issues of ventilation and indoor-air quality. Here are my opinions and suggestions on how to address these issues if you are building or remodeling in the South.

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How to Do Everything: The Energy Nerds Greatest Hits

How to Do Everything: The Energy Nerd's Greatest Hits

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If you plan to design, build, or remodel an energy efficient house, Energy Nerd Martin Holladay's collection of how-to articles is a must-read

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High-Performance Homes Dos & Donts: Mark LaLiberte Seminar Notes

High-Performance Homes Dos & Don'ts: Mark LaLiberte Seminar Notes

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Mark LaLiberte is an amazing building-science teacher. Read my blogging notes from his seminar titled "Building High-Performance Homes Dos & Don'ts," which I attended in Austin, Texas. Remember that this is focused on Texas construction, but there is plenty to learn here for anyone in the U.S.

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Airtight Wall and Roof Sheathing

Airtight Wall and Roof Sheathing

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In the early 1970s, residential builders knew almost nothing about air tightness. Nowadays, there's plenty of data showing why it's so important to air-seal houses.

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3 Reasons to Choose Spray Foam Insulation for a Remodel

3 Reasons to Choose Spray Foam Insulation for a Remodel

Remodeling presents special challenges for the insulation choices. In this 1 minute video I'll show you the three reason's I almost always choose spray foam insulation for my remodel projects.

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Texas Deep-Energy Retrofit Remodel

Texas Deep-Energy Retrofit Remodel

When you hear about a deep energy retrofit project most people think of the snowy North Eastern US. I can tell you that the strategy for a Northern remodel with energy efficiency in mind is very different that our strategy for Hot/Humid Texas. In this video I'll show you 6 things we are doing to making a dramatic difference in this 1950's slab on grade house's energy bills.

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Smart Design Advice for Hot & Humid Climates (i.e. The South)

Smart Design Advice for Hot & Humid Climates (i.e. The South)

Architect Peter Pfeiffer talks about how to utilize smart design for a house in a hot climate zone. His green building advice is practical and following his advice will result in a house that's well designed for the rigors of a hot climate. If you want a comfortable, efficient, durable house and you live in the South then this video will give you tons to think about.

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A New Roof is an Opportunity to Add More Insulation

A New Roof is an Opportunity to Add More Insulation

A homeowner in Baltimore needs to replace the built-up asphalt roof on his house, and wonders how to insulate it effectively at the same time

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Whats the Best Way to Install Rainscreen Siding?

What's the Best Way to Install Rainscreen Siding?

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A builder planning a new house plans to include a rainscreen, an exterior detail that separates the sheathing from the finish cladding with furring strips. He'd like to install the furring horizontally instead of in the more typical vertical orientation. Is that a problem?

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Should Rafters be Encapsulated by Spray-Foam?

Should Rafters be Encapsulated by Spray-Foam?

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Even experts continue to be confused about the permissible thickness of foam insulation sprayed onto the underside of a roof deck

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Weighing the Merits of Spray-Foam Insulation

Weighing the Merits of Spray-Foam Insulation

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A homeowner looking to upgrade the insulation in his 90-year-old Cape is thinking about contracting for spray-in foam. But he's got conflicting advice from installers and wonders whether closed-cell or open-cell foam is the way to go.

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Does Super-Insulation Make Sense in New Orleans?

Does Super-Insulation Make Sense in New Orleans?

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A winning design for an energy-efficient house in the Deep South sparks a conversation on whether high R-values can make a house harder to cool.

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Can an Unvented Cathedral Ceiling be Insulated with Dense-Pack Rock Wool?

Can an Unvented Cathedral Ceiling be Insulated with Dense-Pack Rock Wool?

A homeowner building a house in Massachusetts asks for advice on insulating a cathedral ceiling

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