tag: insulation


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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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Can a Slab Foundation be Insulated Without Rigid Foam?

Can a Slab Foundation be Insulated Without Rigid Foam?

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Energy efficient buildings typically incorporate insulation beneath their concrete slabs, and the go-to choice is sheets of rigid foam. Are there alternatives?

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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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Choosing the Best High Performance Wall System

Choosing the Best High Performance Wall System

Planning a house for a cold climate, a builder weighs the merits of double 2x4 stud walls vs. 2x6 walls with exterior rigid foam insulation.

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Researching Retrofit Technology in the Northwest

Researching Retrofit Technology in the Northwest

Using two identical, side-by-side homes as their laboratory, DOE researchers aim to measure the effectiveness of a variety of energy efficiency improvements

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Taking Aim at Californias Low-Carbon Target

Taking Aim at California's Low-Carbon Target

As the state prepares to cut greenhouse gas emissions 80% below 1990 levels over the next 38 years, scientists predict a mostly electric future

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Russias First Active House Gets a Test Drive

Russia's First "Active House" Gets a Test Drive

A Danish solar-panel company teams up with a Russian developer to build a home designed to showcase net-zero-energy performance

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How to Build a Perfect Wall

How to Build a 'Perfect Wall'

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Adding rigid foam insulation to the outside of the building reduces thermal bridging. Choosing the right insulation for the wall cavity is another question altogether

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Whats the Best Way of Insulating a Crawl Space?

What's the Best Way of Insulating a Crawl Space?

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A leaky crawl space can lower indoor air quality and make it harder to heat and cool a home. So what's the most effective way of dealing with the problem?

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Attic-Insulation Upgrade Takes a Wrong Step

Attic-Insulation Upgrade Takes a Wrong Step

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Installing cellulose insulation into my attic was easy and even fun--until a moment of carelessness changed the job from home improvement to home repair.

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Lawmaker Targets DOEs Weatherization Program

Lawmaker Targets DOE's Weatherization Program

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It's all part of Representative Chuck Fleischmann’s campaign to stop "green initiative abuse"

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Insulating a Maine Roof with Dense-Pack Cellulose

Insulating a Maine Roof with Dense-Pack Cellulose

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A homeowner is moving ahead with plans for an unvented roof insulated with a combination of dense-pack cellulose and rigid foam board. Will moisture be a problem?

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Best Attic for Hot/Humid Climates

Best Attic for Hot/Humid Climates

Most houses in Hot/Humid climates don't have basements so that means that most ductwork in Southern house runs through super hot attic spaces. In this video I'll show you a rather civilized attic space that really makes for a comfortable & efficient house!

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Using Polyethylene as an Air Barrier

Using Polyethylene as an Air Barrier

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Although polyethylene sheeting has fallen out of favor as a vapor retarder in most wall and ceiling assemblies, opinion is mixed on whether it can be used as an air barrier

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PODCAST: Five Big Holes in your House That Suck Energy Out

PODCAST: Five Big Holes in your House That Suck Energy Out

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  An 1/8th inch crack along a window doesn't seem like much to worry about, but a 1/8th in. crack running the length of your house amounts to a hole bigger than a half sheet of plywood. If...

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Where to Spend Your Money: Superinsulation or a High-Tech Heating System?

Where to Spend Your Money: Superinsulation or a High-Tech Heating System?

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What's the best plan: investing in high-quality windows and insulation, or a high-efficiency heating system?

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Summer is the Time to Head Off Ice Dams

Summer is the Time to Head Off Ice Dams

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Corrective action now will prevent ice dams and water intrusion when winter rolls around again

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One view of the net-zero energy frontier

One view of the net-zero energy frontier

A white paper explores how builders, manufacturers, and government entities can develop the market for projects designed for net-zero-energy performance

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Building a radon-resistant home.

Building a radon-resistant home.

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What is deadly and might be lurking in your basement? No, not a Ninja (well probably not), in most cases it is Radon. And it is important to know what Radon is and how to ensure it isn't a threat to your household. From building to testing, I will share what I learned about Radon while building my house.

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showing 41 - 60 of 126 posts
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