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3 Answers

Air barrier on floors?

I am currently renovating a 1960's ranch home, adding two additions. The house has been fully gutted. I intend to cover the existing sub-floor ( pine boards on 45 degree angle) with 3/4" Advantek, and screwing the floor in place. The foundation consists of a partial basement and crawl spaces (which I intend to seal and condition). Is there any value to putting down an air barrier before the new sub-floor, and if so, what would be recommended?



In Green building techniques | Asked By Bill Savoie | Sep 25 12
6 Answers

Neat silicone caulk

I have been looking to start making my timber windows internal beaded. i have had a look at some imported windows and have been very impressed at the quality of the silicone applyed to the external face of the window/unit ,no matter how i try i can not get the look i am after .Is there a tool i can use or are the eastern europeans bloody good at tooling of silicone .Any one help .

In GBA Pro help | Asked By graham Cuckson | Sep 18 12
6 Answers

IRC 2009 R807.1 in low infiltration construction

Citing IRC 2009 R807.1 ("Attic Access") [1] my city rejected my 1010 project [2] plan which, in an effort to limit infiltration below 0.6ACH@50P, does not include an access point into the R-91 attic. The slope of the roof is such that, without significant design changes IRC 2009 R807.1 is in effect.

Someone else has been here, I'm sure...got any insights to share?

The idea of including an attic access to comply with R807.1, only to seal it up to meet 0.6ACH@50P is just plain silly; but dropping the pitch of the roof to avoid R807.1 even more difficult.

In Building Code Questions | Asked By Jan Nielsen | Sep 24 12
1 Answer

How to insulate the wood-framed section of a stepped basement?

We will be putting foam on the outer and possibly inner surfaces of our basement but I am wondering how to insulate the above-ground stepped (wood-framed) section of the basement.

In Energy efficiency and durability | Asked By jessie pratt | Sep 26 12
29 Answers

European windows vs. North American windows

I have read many blogs and Q&A pages from this web site and I am still somewhat confused about European windows.

In Energy efficiency and durability | Asked By Steve Young | Sep 5 12
3 Answers

Is 5/8 drywall sufficient to support R-60 cellulose in a ceiling?

Is 5/8 drywall screwed and glued 24" on center sufficient to support R-60 cellulose in an attic ceiling?

In Green building techniques | Asked By Michael Arnold | Sep 26 12
12 Answers

How to make a large concrete block lighter?

I am planning on using a 12" H x 18" D x 20' L concrete block as the Hearth of a contemporary wood burning fireplace. The problem with using such a large unit of concrete is the weight of the block. I was thinking of using a high density Polyisocyanurate or Polyiso foam block in the center of the form to take some weight out of the Hearth. I am not sure going with route will cause me any problems down the line and would appreciate any comments you might have.

In GBA Pro help | Asked By dennis levine | Oct 24 11
3 Answers

Insulation material to attach to garage ceiling

Our 20 year old Ecco house has been compromised (by a previous owner) due to a garage having been dug out underneath. .we are therefore looking for a very thin but Ecco effective insulation material to attach to the ceiling. there is no room to create a false ceiling to contain any such insulation.

In Green products and materials | Asked By Linda Wright | Sep 25 12
1 Answer

Variable-speed compressor v. two-stage compressor

Building a house in Austin, Texas, and would like (1) a five-star green rating from the city and (2) a central AC with a variable speed compressor. The only problem: the system we're looking at only comes in 1 ton increments. We need 3.5 tons to meet the city's ratings requirement of square feet per ton (and a 3 ton system won't be enough cooling for the house). Therefore, we (may) have to go with a two-stage 3.5 ton system.

My question: Does going from a 4-ton variable speed compressor to a 3.5 ton two-stage compressor make sense energy efficient-wise?

In Mechanicals | Asked By Robert Mace | Sep 25 12
1 Answer

Housewrap question - replacing siding

I want to replace the siding on my house. It has wood (plywood) siding sheets on it.

I notice that it don’t have any housewrap. When I pull back the siding, I can see the installation. When I watch at some video about housewrap, they are tacking it to a type of plywood.

My question is, do I need to install the plywood are something before I put the siding on it? I need to know what is best, and what do I do when I get to the windows and door with the wrap. If you have any related videos send them to me.

In General questions | Asked By Reginald Myles | Sep 25 12
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