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12 Answers

I have designed a 4,800 sqft home in NH (Zone 6) with "REMOTE" insulation building assemblies. R-40 walls, R-60 ceiling and R-20 sub slab. The windows were to be Eagle triple glazed U-.265. My client has asked me what the pay back is between using Eagle triple pane versus double glazed U-.31. For the entire house the cost difference is $2,000 and the efficiency difference is 16%. This seems like a good value to me especially in a house that is deeply insulated. Anyone have suggestions or answers to his question "what is the payback?"

In Green products and materials | Asked By Harry Seidel | Oct 28 11
1 Answer

The glass panel I chose is 20cmx20cm and 75mm thick. I want to fix this with aluminum extrusions. As I am outsourcing to the contractor, I want to know the labour coefficients of fixing these blocks.
How much can a worker (carpenter or mason) fix the area in a day (8 hours)? Thank you.

In Building Code Questions | Asked By Ugyen Gyeltshen | Oct 31 11
1 Answer

Should synthetic roofing underlayment be used on a roof with open cell foam sprayed against the roof deck with shingles in North Carolina? I sure hope so as we just did it with a house I am having built.

In General questions | Asked By Chris Helms | Oct 30 11
2 Answers

I am building a new house in zone 4A. We are using 6" studs and the interior insulation is a hybrid flash and batt configuration with 2" ccsf and 4" fiberglass. Exterior cladding is cedar shake shingles over a rain screen. My GC want to use Ice and Water Shield for the WRB because of the sealing properties from nail penetrations. I do not think it is a good idea, as I think the wall needs to be able to dry to the exterior, and the interior insulation is vapor impermeable. Any thoughts?

In GBA Pro help | Asked By Sports Doc | Oct 30 11
4 Answers

Just stepped out of a newer Ace Hardware. The carpet and carpet glue smell was nausea creating. Agway stores and Tractor Supply stores are as bad or more than bad for me.

So, I just don't get our laws and our group use of the word TOXIC!!!

At our homes we need 100% pure perfect air, but at Agway we can rename the store Gagway?

Bad enough for my ten minutes, what about a store manager putting in 25 years?

And toxic.... The word toxic to me is now toxic!

So, what say all?

In Building Code Questions | Asked By aj builder, Upstate NY Zone 6a | Oct 29 11
2 Answers

We are buying a REAL fixer upper with roof problems that include falling off box gutters. It needs a new roof anyway and I had thought about foam board as we would like to use the attic space as living. Is there any major flaw to attaching 12 " TJI's over the rafters and using cellulose? The "sheathing" is just spaced boards which could be cut after the TJIs are installed for one cavity in each bay. This should also fix the roof line to use regular gutters too, I think.

In Green building techniques | Asked By Nyle Phillips | Oct 27 11
2 Answers

Does anyone have any recommendations for de-icing products for walkways and driveways that are less detrimental than standard de-icing salts?

In Green products and materials | Asked By Tracy Miller | Oct 27 11
1 Answer

Hello. I came across a situation at my previous home that the stucco would wick the moisture into the house. Had to take stucco off, reinsulate with a moisture-wicking barrier paper.

Going to insulate my garage and would like to know the best way of insulating from the inside, since the outside is stucco. What sort of barrier should one use before insulating?

In General questions | Asked By paul robella | Oct 29 11
1 Answer

I live in climate 5b, but I am wondering about any cold climate. If the assembly is vented, there is drying potential to the exterior. But with foam board on the inside, drying to the interior becomes limited or non-existent. I know that if foam board is applied, the seams should be taped or otherwise air sealed.
In the BSC research report on high R-value roof assemblies, they list one type of vented cathedral roof with interior foam board insulation, but the roof has just 1 inch of XPS, which has a permeability of about 1.1. (roof 3C in the report)

In Energy efficiency and durability | Asked By Nicholas VanArsdel | Oct 28 11
10 Answers

My home has return air in the attic which is relatively accessible and supply air in the crawlspace, some of which isn't very accessible. I had a blower door and ducting tests that revealed huge leakage. we applied mastic to everything accessible and fixed a big leak. We retested and got down to about 25% leakage and at the point the contractor said it was the best they could do.

In General questions | Asked By Mark Renfrow | Feb 5 11
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