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2 Answers

Would using spray on foam as insulation allow me to avoid the need to use any drywall in my exterior walls?

Would using spray on foam as insulation allow me to avoid the need to use any drywall in my exterior walls if I am using tongue and groove wood for interior walls? Also is there any interior treatment that can reduce thermal transfer through the 2x6 studs?

In Green building techniques | Asked By Stan Soper | Jun 30 14
4 Answers

Are there passive solar designs that have large north side windows?

Our land has spectacular bluff view, which we want to enjoy from inside, so having some large windows facing the bluff are a desirable feature for our future home plans. Unfortunately the bluff faces NORTH. We would like to use passive solar design, but from what I have read, windows need to be kept to a minimum on the north. What can we do to maximize solar heat gain without sacrificing our view?

In Energy efficiency and durability | Asked By Kirk Smith | Jun 29 14
14 Answers

What's the best basement flooring system?

Remodeling a 1500sq.ft. walkout that previously had carpet on the concrete. We want to do the kitchen and bathroom in tile or stone and the rest of the area in wall-wall carpet. The only ptroduct I've found thats meets my requirements are Delta Fl with t&g plywood for the carpeted area and Schluter®-DITRA-HEAT for the tile/stone area. Not fond of the t&g plywood in the basement as everything else will be mold proof. Are there other options beside inorganic individual tiles or is the Delta Fl system reliable?

In General questions | Asked By Jeff Dieterle | Mar 8 14
3 Answers

Drywall on 24 inch o.c. framing?

Are there any issues with using 1/2" drywall on 24" o.c. framed walls?

In Energy efficiency and durability | Asked By Jerry Liebler | Jun 26 14
6 Answers

Is the permeance of Foamular 1/4" fanfold insulation really only .75 perms?

As found in the product properties provided by Owens Corning (See chart in link below)


They give a perm rating of .75. Looking at the product, it appears to be perforated with a number of small holes. I'm considering using this as an air barrier material for a knee wall, but concerned with the low permeance. Is the permeance rated on a per inch basis?

Owens corning provides data showing permeance of .75 for 1/4" and 3/8" fanfold, and 1.1 for half inch, 1 inch, and 2" foamular.

In Green products and materials | Asked By Rick Van Handel | Jun 26 14
6 Answers

Attic air handler: New system or unvented attic?

My house has 2 heat pumps with the air handlers in the attic.....in southern Florida.

Typical insulation could be improved.....the HVAC systems are 10 years old. Would I be better off putting in newer, more efficient HVAC system (current system is plain single stage, single speed) or changing the attic to foam unvented attic?

In Energy efficiency and durability | Asked By Steve Romero | Jun 26 14
2 Answers

Am I using RESFEN wrong?

I am attempting to model several options for replacing my house's windows and I'm getting slightly weird results.

This is the Albuquerque, NM area, which is a predominately a heating climate, but does have a cooling season, and gets lots of sun year-round. My cooling bills are very low since I use evaporative cooling, so I want to focus on reducing heating energy, leading me to want to maximize the free solar energy available in my sunny climate. However, I also want to alleviate the summer discomfort from the west windows overheating.

In Energy efficiency and durability | Asked By Nathaniel G | Jun 26 14
2 Answers

What is the difference between R-19 (for example) and a rating of R-3.44 per inch?

I am going to add insulation to the inside walls of an existing home. I want the best insulation (R-value), bur I don't know the difference between R-19 vs R-3.44 per inch, for example.

In Energy efficiency and durability | Asked By beverly bliesath | Jun 26 14
8 Answers

How to put rigid foam over brick then stucco the foam

I have a house in El Paso Texas that has a brick exterior. I would like to put 2" of rigid foam over the brick then stucco the foam. How should this be done? What type of stucco is best? I do not want to put the insulation on the inside of the house because it is a small house and it would take up too much room. The house has zero insulation. The house was built in the late 20's. What questions should I ask a company that would be putting on the foam?

In Energy efficiency and durability | Asked By Joan Proza | Nov 10 10
2 Answers

How much air does dense-packed cellulose leak?

I've been thinking a lot about dense packed cellulose and reading up on it's various properties. I found an excellent discussion on this same message board: http://www.greenbuildingadvisor.com/community/forum/energy-efficiency-an....

In Green products and materials | Asked By Josh Engle | Jun 25 14
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