conditioned attic

Determining the Best Attic Option

Posted on April 25,2015 by ScottG in attic insulation

Attics come in many shapes and sizes, but they are either conditioned or unconditioned. That is, they are insulated and heated like the rest of the house and can be considered conditioned space, or they are designed to allow the free circulation of outdoor air and become unconditioned spaces. Is one option better than the other? That's what Rus Pearson would like to know.

Open-Cell Spray Foam and Damp Roof Sheathing

Posted on April 25,2015 by user-756436 in closed-cell spray foam

Now that insulation contractors have been installing spray foam insulation on the underside of roof sheathing for several years, we’re beginning to accumulate anecdotes and data on successful installations and failed installations. The anecdotes and data are enough to provide a few rules of thumb for designers and builders who want to install spray foam on the underside of roof sheathing.

Spray Foam Insulation Does Not Work with All HVAC Systems

Posted on April 25,2015 by ab3 in atmospheric combustion

Earlier this year I got a question about a home that had spray foam insulation in the attic. There's nothing unusual about that. A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits. But then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.

Pondering an Attic Conversion

Posted on April 25,2015 by ScottG in attic vent

Rob Graff is getting a new roof, and with it an opportunity to turn his vented attic into an insulated, conditioned space. But he’s also got some concerns.

Creating a Conditioned Attic

Posted on April 25,2015 by user-756436 in attic duct

UPDATED April 22, 2014 Millions of Americans live in states where residential HVAC contractors routinely install ductwork in unconditioned attics. In many cases, these attics also contain a variety of appliances, including air handlers, furnaces, or water heaters.

Attic Insulation Upgrades

Posted on April 25,2015 by Mike_Maines in conditioned attic

Two projects my company is currently working on involve a common problem: not enough insulation in the attic. Both homes are old; one dates from 1860, the other from 1705. In both cases we initially recommended insulating the rafter bays. In both cases, however, we were not able to get over homeowner biases against heating “storage spaces,” and instead opted for insulating the attic floor.

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