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2 Answers

Looking for storm window recommendations

Our old farmhouse had the sash in the original double hung windows replaced about 15 or more years ago. Some of the windows also have old cheap aluminum framed storm windows. We are considering putting new storm windows on all the double hung windows in the house and I have more questions the more I look. For example, Larson makes a couple of lines of aluminum framed storm windows that look better than what are on our house now. They are also promoting the use of low-e glass in the storm windows. Is it worth getting low-e glass in this kind of window?

Asked By Jim Erdman | Jun 6 18
2 Answers

Constructing an Overroof

My family purchased a rehab house in western New York (Zone 5) that we are currently gutting. We're not flippers - just want to create a nice, affordable, energy-efficient home). My question is related to getting the roof up to energy code (R-49) at least, hopefully more.

Asked By James Fugate | Jun 7 18
21 Answers

Nits & grits

Climate zone 3A (Atlanta, GA)
Bonfiglioli wall
2x6 studs
Batt insulation in 7.25" cavities, type TBD
Plywood sheathing
Seams taped, type TBD
Housewrap lapped, type TBD
No exterior insulation
Air gap to majority brick veneer
Rainscreen to minority fiberboard veneer
Site-built roof frame
Spray foam roof insulation, type TBD
Plywood sheathing
Peel & stick lapped, type TBD
No battens
Clay roof tiles
Target <2 ACH 50

Asked By PJ Clem | Jun 6 18
5 Answers

DIY blower door test - crazy?

I am having trouble finding someone willing to do a blower door test. All the firms I have contacted have said they will only do a complete Energy Audit as part of the government rebate program. I'm guessing they get a kickback from the government on top of what they charge the homeowner. So I've resorted to thinking up a way to test it myself.

Asked By Trevor Lambert | Jun 5 18
8 Answers

Hot Roof - Cathedral Ceiling

I am in the process of insulating my cathedral ceiling. I have searched through the site but haven't found exactly what I'm wondering.

Originally I planned on doing full depth closed cell spray foam (as shown here:

Asked By user-7079709 | Jun 5 18
11 Answers

What's the best way to implement polyiso insulation in an old attic about to be converted to living space?

I'm seeing conflicting reports regarding whether moisture barrier should be used for a finished attic roof, or whether the attic should remain vented. I suspect the answer depends on what is done on the exterior side of the roof sheathing (and I don't plan on touching the outside of the roof myself).

My present plan is to install two 2" layers of polyiso rigid insulation with seams both staggered and sealed, and then probably another layer on the drop ceiling and poy walls.

Asked By TimGNash | May 31 18
7 Answers

Opinions on my roof/ceiling assembly


I'm working on designing as small addition to our house and I'm looking for opinions on my design.

I'm trying to thermally break the ceiling from the rafters so have drawn foam above the ceiling joists but below the rafters. We have limited height for the roof before it interferes with 2nd floor windows so I can't add foam above the rafters. We don't want a flat roof either. Also, I'd like to stick with a vented roof (not a hot roof).

I think this is a good solution, what do you think?

Asked By David D | Jun 4 18
13 Answers

Vented roof in the Pacific Northwest

I was interested in the brief thread started by Malcolm Taylor, referring to condensation problems for vented roofs in the Pacific Northwest:

It looks like there has been a flurry of research, mainly done by RDH, but I haven't seen much follow-up.

Asked By John Prospect | Jun 1 18
2 Answers

Anybody know what kind of blown-in insulation this is?

My attic floor was insulated with about 3-4 inches of this material, which I have never seen before. My first hypothesis based on weight and texture is finely shredded redwood bark, but I have never heard of that material's being used as insulation. The attic was probably insulated between 1970 and 1995.

Does anybody know what this is?

Asked By frasca | Jun 2 18
4 Answers

Insulate top of basement footing?

We have removed the slab from our basement and will be adding sub-slab insulation before pouring new concrete. I would like to preserve as much ceiling height as possible while still having a dry and comfortable basement. There will be a layer of 2 3/8" EPS (R-10) under the entire slab that is even with the top of the footing. A dimpled membrane will be placed on the interior concrete block walls and lapped over the top of the footing to direct any water to the interior drain tile. Concrete will be poured directly up against the the interior drainage membrane.

Asked By Andy Freeman | Jun 1 18
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