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1 Answer

Window shading in a cool climate - is it needed?

I'm designing a small up/down duplex in a mountain climate with cold winters and cool summers. Do I really need or want window shading overhangs with a relatively high south glazing ratio (13%)?

In Energy efficiency and durability | Asked By Lars SG | Jun 17 14
16 Answers

Rubberized spray to seal rigid foam seams?


In General questions | Asked By Evan Gentler | Apr 13 14
2 Answers

I am interested in certification for duct testing

Where are courses available near Charleston, S.C. (national certification)?

In Green building techniques | Asked By GRAHAM CREECH | Jun 16 14
1 Answer

What to do about an old attic?

I live in an old MA farmhouse built in 1890. I have a second story over about half of the house and a 3.5/12 shed roof that descends to the back from midway between the first and second floor. This roof changes pitch slightly about 3/4 of the way down where it covers an added sun room porch. The porch has skylights that are leaking. The rest of the roof does not leak now. It is covered in rolled roofing. The roof covers a 28’ x 20’ floor area with the 28’ dimension across the connection with the house.

In Green building techniques | Asked By Brian Coppola | Jun 16 14
3 Answers

EPS for attic insulation

I guess it's a "cut and cobble" question. How can EPS be used in attic insulation application for a new construction?

BTW I am in zone 6.

In General questions | Asked By asim majeed | Jun 14 14
1 Answer

How to convert a non sealed attic space to a sealed attic space in a Zone 3

I'm looking at completely redoing the whole house insulation in a 70 year old home. I'll be gutting the walls for other reasons, and figured redoing the insulation with blown in foam insulation made the most sense. The question I do have is the attic space. The design of the roof is a barn style with the first part of the roof having a very high angle (almost vertical) and the rest of the roof having a normal slope. As part of this, the upper floor of the house "sticks" in to the attic, and there are 2 normal sized doors that lead directly to the attic.

In General questions | Asked By Stephen Saar | Jun 15 14
11 Answers

Want reccomendations on superinsulating a 42x60 shop in Canada (Zone 7a)

Hi, we are located about 3 hours north of Grand Forks and are rebuilding a farm shop that we lost this winter due to snow load. It is going to be regular stud construction 16" o.c. as for the size and span and wall height (16') our engineers will not stamp 24" o.c.

We have the option of either 2x6 or 2x8 studs. The outside cladding will be metal and thte construciotn method used up here is to put 2x4 strapping horizontally on the studs to the exterior and the metal siding is attached to that. T

In Energy efficiency and durability | Asked By Brent Belluk | Jun 12 14
4 Answers

Do I want low-SHGC windows on the east and west sides?

I live in sunny New Mexico and am doing research for having my ancient, awful aluminum windows replaced. I'm torn on the question of whether I want low solar heat gain coefficient (SHGC) windows, though. My house faces east-west with only two small, unshaded windows on the south side. Most of the windows are east or west, and these windows cause the house to gain undesirable amounts of solar heat in the summer, especially a large west-facing picture window which makes the living room really hot.

In Energy efficiency and durability | Asked By Nathaniel Graham | Jun 13 14
10 Answers

Thermal Bridging

How does one quantify thermal bridging when it comes to the dimensions of the area that is a thermal bridge?

For instance; if there is a concrete area that is 6" wide x 12" tall, how does one calculate that area into the whole R-Value of the structure?

In Energy efficiency and durability | Asked By Peter L | Jun 12 14
2 Answers

Looking for tips on air sealing tub plumbing slab on grade

I am looking for suggestions how to air seal around plumbing rough in for a tub on a slab. Normally we build a 12"x16" 2x box, bring our pvc into the box, usually leaving the pipe long and a little deep in the sand and pour our concrete around the box.

In General questions | Asked By kye ford | Jun 12 14
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