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3 Answers

Re-roofing a tar and gravel home

I have a small (approx. 900sq ft.) home with a flat tar and gravel roof. I know the roof is at least 10 yrs. old and I have not experienced any issues within the house from leaks or whatnot. I have however noticed that the overhangs of the roof that stretch the perimeter of the house at 2 feet, have become soft and fairly weak when stepping on them. They also show some signs of mold on the underneath side of the sheathing. I have not noticed these problems with the portion of the roof that covers the house.

In General questions | Asked By Jared George | Jun 30 15
10 Answers

Tape exterior XPS insulation and housewrap?

Hello,

Long time follower first time poster.. I have learned so much from this site and appreciate all the knowledge you people share.

We are building a tight house in zone 6 Ontario. The wall stack from inside is as follows:

Drywall
2x3 uninsulated service wall
Membrain
2x8 stud wall filled with dense pack cellulose
Cross bracing for lateral strength
2" XPS on exterior
Tyvek WRB
Furring Strips (airgap)
Hardiboard Siding

In Green building techniques | Asked By kyle lamont | Jun 19 15
7 Answers

Did I goof badly? Metal bracket against exterior sheathing

My typical wall section on part of my house is 5" of stone, two layers of 2 1/4" EPS rigid foam, Grace waterproofing, plywood sheathing with 2x4 studs and blown fiberglass between the studs.

In Energy efficiency and durability | Asked By Gary Dick | Jun 30 15
13 Answers

Is it advisable to use nail base insulation panels over a roof insulated with closed cell spray foam?

We are renovating an old railroad station, turning it into a residence and are gearing up to put new roofing on the building. Built in 1888, the building has massive overhangs on all sides and the rafters are mostly 2x6s with 4x6s spaced about 8' apart supported by large brackets. We had planned to use closed-cell spray foam insulation in order to get the maximum r-value in the relatively shallow rafter bays. Also, we want to maximize the available head room in the second floor rooms. The underside of the roof will also be the ceiling with t&g beadboard installed directly to the rafters.

In Energy efficiency and durability | Asked By Jodi Gunderson | May 29 15
3 Answers

Cut and cobble polyiso then spray foam

Hello everyone,

In Energy efficiency and durability | Asked By jason hood | Jun 28 15
1 Answer

Would insulation blown into an exterior wall eliminate bird infestation?

If there is room for the birds who have made golf ball size holes in our exterior wood siding and are raising a bunch of babies in there, could we eliminate the birds and get extra insulation at the same time. We think the birds are the invasive European Starlings, not nice birds.

Thank you for your help, Cathy

In Energy efficiency and durability | Asked By Catherine Rodner | Jun 29 15
1 Answer

Can I use rigid foam inside and outside a concrete block wall?

I have a concrete block barn I am converting to a living space. I plan to use Insofast 2" EPS panels on the interior which with the block gives me R-12 (Block at 3 and foam at 9). I would like to get a better R value, by adding foam to the outside. Would this create a moisture trapping problem?

How would I fasten the furring strips through the foam and into the block? I was thinking Tapcon screws.

In Green building techniques | Asked By Philip Faucher | Jun 29 15
9 Answers

How to attach 4" EPS foam to exterior of basement wall below grade?

I am gathering materials for an expansion and reno of an existing home in zone 7.
I will be adding 4" EPS foam above grade wood framed portion on the renovation side of the building (850 sq ft) as well as to the new construction (1000 sq ft) using 6 1/2 inch screws (thanks Dana for pointing me in the right direction on that detail).
I am struggling with details on how I will attach the 4" EPS to the below grade concrete AND whether to use a drain wrap product against the concrete wall like Platon Foundation Wrap.

In General questions | Asked By tim brown | Jun 27 15
12 Answers

So where do I make budget cuts?

My project has hit a snag. Chiefly, the excavation and clearing of the lot is costing thousands more than I projected. Shame on me for not doing my homework better on how much it would cost to remove most of those dang trees. Okay..so flog me for that. I have to make some cuts in my project and that likely means cutting some of my energy efficiency upgrades. Here's kind of what I was planning on and then I'll list the cuts I'm thinking of making (and why).

In General questions | Asked By Andrew Bennett | Jun 28 15
8 Answers

Vapor barrier

Hi. I live in Houston and unfortunately bought a house that has some issues with water penetration in several areas due to brick parapets extending above the roofline that were never capped. The biggest area of water entry is in the master bath which we have completely gutted down to the studs - several of which have to be replaced due to rot and deterioration over many years.

In General questions | Asked By Beth Puyau | Jun 23 15
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