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5 Answers

Insulation design

Climate zone 2a.....south east Georgia coastal island. Bought a 1962 block one story house, The interior walls are painted block....we like the beach look associated with this concept. So, all insulation must be on the exterior of the house....which now us striped to bare block. Interested in the correct approach for water management and insulation. Exterior will eventually be cedar shingles.. Sort of thinking....spray closed cell between furring strips with ridged foam sheeting over the spray foam and strips. Then plywood covered with rain drainage screen topped with shingles.

Asked By Robert Brown | Oct 17 14
10 Answers

Radon

Question for you:
My basement was tested at 5.1 and then 6.5, short term tests. unoccupied space.
The living room first floor was at 2.7.

If still interested in radon mitigation, how can this be done at the slab if this is an 80yr old home that does not have any stone under the slab in the basement? The floor is on soil?

Thanks,

Dave

Asked By Dave Mac | Oct 13 14
9 Answers

How can I attach a ledger to an outside brick wall for a deck?

How can I attach a ledger to an outside brick wall for a deck when foam is used on the outside of sheathing?

I have 3 inches of foam then a 1 nice air gap, and I need advice on how to attach the ledger.

Asked By michael kasales | Oct 9 14
4 Answers

We have an old concrete block house that was built in the 50's. What is the best way to insulate and side it?

My grandpa built our house and used a concrete block for the exterior. I don't believe there is much insulation between the drywall and the block and I don't believe that the block was filled with concrete. It is most likely hollow.

We want to add new windows and place siding on the exterior and were thinking of adding furring strips and foam board underneath the insulation but I am worried about the moisture factor. Please advise. (The basement is also uninsulated, unfinished, and is concrete block).
We are located in Montana.

Asked By D B | Oct 7 14
41 Answers

I am using Roxul insulation for ceiling and walls in a post-and-beam barn home

I plan to use this insulation in a 2x8 ceiling and 2x6 stud walls. Roof is sheathed in OSB, with a Titanium underlayment with standing seam on top. Walls have OSB and Tyvek house wrap. My question is can I use a poly vinyl vapor barrier on the interior after installing the insulation and then cover with 1x6 tongue and groove pine board. I have seen conflicting information on this. We are in Kansas which I think is Zone 6. This is a full post and beam barn structure. It has a gambrel portion with a loft. Loft has 12' high ceilings. Lean to portion has 9' high ceilings.

Asked By David Hauber | Sep 25 14
3 Answers

Footing insulation

I am building an energy efficient house on a slab with 6 inch of EPS insulating panel under the a 5 inch slab. My architect is asking to add a 3 X 3 footing (on compacted soil) under the slab where the posts that hold the stairway to the second floor is meeting the ground floor and a second one at the bottom of the stair.

How do we go about insulating these footing to at least the same level as the rest of the slab do we just put the same 6 inch insulation under these footing as well as their rim?

Asked By Pierre Gingras | Oct 5 14
9 Answers

Hot water re-circ line & vertical head loss

Hi all,

I’m trying to size a pump for our re-circ line. We have a 1 story house, with a tankless water heater in our attic at one end of the house. Our 2 bathrooms are at the other end of the house.

Asked By Joe G | Sep 30 14
2 Answers

Window & door header insulation options - Zone 5

2x6 stud walls, and the header’s have an inside and outside vertical 2x8, with the 2.5” center is empty. The outside sheathing is 1” polyiso with a foil (no OSB or plywood). I want to fill the headers before the windows are installed this week. Drying is to the inside, so no inside VB, and permeability is important. I was thinking 1.5” R6 Roxul ComfortBoard IS or 2” R8 EPS foam. I tried window/door spray foam, but the 2.5” gap was too large, and the foam just falls out to the floor. Am I overthinking this, and I can just stuff it with pink fiberglass?

Thanks,
J

Asked By Jeff Conners | Sep 29 14
11 Answers

What is the best detail at a slab on grade pour through to insulate the slab?

Or is it just a weak point that can't be avoided?
I have 2" of rigid insulation under the slab and 1" at the L block.

Asked By David A Flannery | Sep 23 14
2 Answers

Tyroc subfloor

Hi would like opinion on Tyroc subfloor for use in basement and if it is better than some of the others subfloors on the market Thanks

Asked By Brad D | Sep 21 14
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