exterior walls/roofs

Double-Stud Wall / Roof Connection

Posted on March 01,2015 by Daniel Morrison in exterior walls/roofs

Mini truss header // elevation

Posted on March 01,2015 by Peterbilt in Add a floor above

2 Stud corner with 2x4 blocking

Posted on March 01,2015 by Peterbilt in Add a floor above

2 Stud corner with 2x6 blocking

Posted on March 01,2015 by Peterbilt in Add a floor above

Can Vinyl Siding be Applied Over Furring Strips?

Posted on March 01,2015 by ScottG in deep energy retrofit

Wall assemblies that incorporate rigid foam insulation over exterior sheathing, followed by furring strips and siding, are becoming common. The extra layer of insulation helps reduce thermal bridging through wood framing, and the furring strips create a ventilation space behind the siding that promotes drying.

What’s Wrong With This Insulation Job?

Posted on March 01,2015 by KSPmYvh9gx in batt

In many areas of the country, homes are receiving Energy Star labels they don’t deserve. Major errors like the ones shown in this photo are supposed to be caught by the HERS rater who performs third-party verification services. This home slipped through the cracks. The photo shows at least four errors serious enough to have prevented the home from receiving an Energy Star label. Can you spot them? Next week, we will post the answers that a Building America team, BIRA, came up with.

How to Sell Green Upgrades: A Few Small Things

Posted on March 01,2015 by michaelds in energy efficiency upgrades

Offering your client small upgrades that have tangible green benefits for them (and profit opportunities for you) always makes sense. And when your business is not as strong as you would like, it becomes even more imperative that you not let these opportunities slip away. Here are two of my favorite easy-to-sell small upgrades that can improve the performance of your home and make you extra money to boot.

Waiting for EPA Action on Spray Foam Insulation

Posted on March 01,2015 by Fretboard in diisocyanate

Spray polyurethane foam is magic to some advocates of energy efficient housing — but black magic to others, who say its toxic potential outweighs its considerable merits as an airtight insulator.

How to Insulate a Wall from the Outside

Posted on March 01,2015 by ScottG in exterior foam

Gregg is renovating his 50-year-old house in Wisconsin and trying to devise the best way of insulating exterior walls from the outside. The house was built conventionally, with 2x4 walls, fiberglass batt insulation, fiberboard sheathing, and hardboard siding. He plans to tear off both siding and sheathing and remove the batt insulation, then apply 3 in. of spray polyurethane foam insulation into the stud bays. The existing kraft paper vapor barrier on the interior side of the wall will stay in place.

Recycling Vinyl Siding

Posted on March 01,2015 by Peterbilt in PVC

In 1998, while at the NAHB Reseach Center, I worked on a vinyl siding recycling project in Grand Rapids, MI. It was pretty simple: siding installers stuffed their cut-off waste into the long cardboard boxes the new siding came in, and back-hauled both to the same place they bought their vinyl siding stock. There, the vinyl cut-offs were placed in one container and the cardboard in another. The vinyl cut-offs were baled and when a 40,000-pound load was accumulated, a plastics broker would negotiate a price for the tractor-trailer load. Recycling vinyl siding

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