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5 Answers

How much of a 2 x 6 plate has to be on the stem wall?

The real question is whether to use 6 in or 8 in blocks for my stem wall. Stem wall is 24 in high, this is slab construction.

The wall is metal, membrane, 1.5 in ISO, 5/8 OSB, 6 in plate, 5/8 drywall, trim.

If I use a 6 in block and line the outside of the ISO with the outside of the block, that puts only about 3.5 in of the plate on the block. Will this work? The good part of this system is that the 3 in of styrene on the inside of the stem wall can be let untouched and thereby give me a good thermal break between the floor and the block.

Asked By Tooger Smith | Apr 16 15
5 Answers

Best HVAC options for large house in zone 5a.

I have a custom house with 3930 sq/ft of conditioned space in a development in northern Idaho, (Zone 5a). The basement is planned to be Logix Platinum ICFs with R-28, the main and upper floors planned as 2x6 advanced framing walls with cellulose, 7/16" OSB, Tamlyn Drainable Housewrap, 1.5" of Terrafoam EPS, and fiber cement siding.
I'm hoping to get the owner to agree to spray foam the attic sheeting to condition it (R-38 min.)
The basement is 1830 sq/ft including a conditioned space under a large garage. The upper two floors of living space are 1050 sq/ft each.

Asked By Nethaniel Ealy | Apr 15 15
4 Answers

WRB advice

Finishing several additions to a coastal home in South Georgia.
Basically...plywood, wrb, vented furring strips, cedar shingle sidewall.
Due to the hot summer we plan to go north for 4 months and won't be able to completely finish the exterior. Looks like the WRB applied is about as far as I can get.. So...what wrb to use.
I know these products have limited "uncover" time.
Thinking a liquid applied WRB might be the way to go...considering wind, ripping, etc.
Any thoughts......thanks

Asked By Robert Brown | Apr 15 15
5 Answers

What roof underlayment can be used on a non-vented metal roof?

I've put up a building that has a 14/12 pitch non vented roof but now the building inspection dept. is hassling me over using Titanium UDL30 underlayment under the metal roof. They say it doesn't breathe and can rot the roof sheathing. The ceiling is R49 with 4" of foam against the plywood sheathing followed by 8" of fiberglass and 2 layers of 5/8" firesheild drywall.

I'd like to know 2 things - are my building officials wrong and if they're not what type of underlayment is allowable under a hot metal roof? I'm in the midwest in zone 6a.

Asked By TeleTooler | Apr 11 15
1 Answer

Cape Cod Home - condensation on LL floors - mid-May through mid-September

Cape Cod Home - condensation on LL floors - mid may thru mid september... the basement is walk out with windows, slider, so a fair amount of air goes through.

I do understand the floor is colder than the air flow temp. The key piece of info is that there is no insulation under the concrete floor.

The real question.... can a layer of foam be put down over the concrete and then a sleeper floor over that ?? or simply the sleeper floor ? what is the correct way to mitigate that condensation problem on some level.

Asked By PrestigeProperties | Apr 13 15
3 Answers

Diamond Pier usage

Is there any information available where 'Diamond Piers' have been used to support the construction of a driveway over bordering vegetative wetland areas ? I have to comply with a town conservation code that does not allow 'destruction ' of wetland to access buildable lots and it seems this system might work, but I cannot find that they have been used specifically for a driveway ??
Any ideas or help would be appreciated
GJAussie

Asked By Garry Hopkins | Apr 10 15
10 Answers

Best way to find the experts in my area

What or where is the best resource to find the top green architects/designers and builders in my area?

Asked By Mary Dorcey-Mussog | Apr 1 15
17 Answers

Is this design OK for my vaulted ceiling?

I am new to this. I feel like I am back in college researching like crazy and finding too much info. This is the best site I have found. Keep up the good work. I have built several houses, but this one has a vaulted ceiling covering a 34 X 34 space. (This is my daughter-in-love's request. How could I say "no"!) However, I am beginning to have second thoughts. This is what I have come up with due to a variety of reasons.

Asked By Tooger Smith | Apr 8 15
3 Answers

Is what my contractor telling me correct?

I have placed a contract for repair and insulation of flat roofs. A fibreglass finish to the roof.
The contractor stated that screws to hold the Xltratherm boards in place would not affects the insulation values also that fibreglass insulation compressed into 75mm rafters by 50mm Xltratherm boards is equivalent to 140mm of Xltratherm boards.

Is this a reasonable statement?

I am trying to discover how much if any degrading in insulating properties occurs when insulation boards are attached to roof beams by screws.

Asked By MikeDunwell | Apr 9 15
3 Answers

Use scrap polyiso for inground gutters?

I have bunch of scrap 1 1/2" fiberglass-faced roofing polyiso left over from basement insulation project. Next large project I will be working on is fixing grading issues around the perimeter of the house, removing all the bushes right next to foundation, and putting down washed p-stone (likely). I have read before on GBA about those inground insulation "skirts", but there XPS or EPS is recommended with EPDM on top. Would it be bad to just use scrap polyiso under EPDM?

Asked By Apollo S | Apr 8 15
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