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11 Answers

Fastening strapping for steel roof

For my simple gable roof, I will be installing exposed-fastener steel roofing atop 2x4 strapping atop Grace Tri-Flex underlayment atop OSB sheathing atop trusses 24" oc. Everything I've read indicates that screws would be best for fastening the strapping, as they offer far greater withdrawal resistance than nails, but I haven't found any recommendations on the best fastening pattern. Would using two 3-1/2" exterior deck screws at each intersection between the strapping (laid broad side down) and the truss top chords be best?

In General questions | Asked By Jeff Cooper | Feb 1 16
12 Answers

Longest fastenmaster headlock screw is too short

I apologise for returning to this as I asked then question months ago and though I had it sorted out!

In in Canada p9n0e6!

I am about to order the first bunch material for my build and am running into some issues... The wall stack up is .......from interior

A-1/2 drywall
B-Certainteed intelligent membrane
C-2x6 framing with fibreglass bat insulation
D-7/16 OSB
E-4 inches EPS foam
F-Tyvek
G-3/4 inch plywood ripped to 4 inch width installed vertically to hold
the foam to wall and provide mailing surface for hardiboard siding and rain screen

In General questions | Asked By tim brown | Jan 30 16
1 Answer

Structural Wall

My husband and I are looking to take out a small "lip" of a wall and aren't sure if we can do so. Let me post a picture:

Also, I don't think we can take out what I labelled as "possibly this" because I think it's a beam, but I'm not sure. If we can, I'd like to.

As for what's in the basement underneath, here is a picture that faces the same way:

In Building Code Questions | Asked By Sarah Poulin | Feb 2 16
2 Answers

Insulating old Victorian

Good day,

First, thank you for providing this service as it is appreciated. Second, I saw a recent post on insulating old Victorians and it applies to me also.

Background: 1888, double, 5000sq ft Victorian in Columbus, Ohio. All 40 windows are bad and replacing this Spring. Insulation is non existent or questionable.

One of many issues: Insulation: On one side the past owner built a 6-8 inch interior sheetrock wall around the outer walls. There are some unfinished rooms which I can see dirt insulation in between, but still unsure of the entire area.

In General questions | Asked By Loren S | Jan 30 16
5 Answers

I'm adding 1 1/2 formular foam to outside of 2x4 wall. Is there a ledger strip to protect the edge of the foam and also allow for 3/4 rainscreen ventilation?

It would be nice to have a product that would protect the edge of foam and then transition to insect screen for the rainscreen 3/4 inch. And then it would be great if it was available with a a vinyl siding start strip built in also! I may be asking for a lot, I know but is there such a product? Thanks, Dave Green

In Energy efficiency and durability | Asked By Dave Green | Feb 1 16
11 Answers

Larsen truss with veranda (roof and deck)

So I'm considering the Larsen truss for my addition. 2x4 load bearing walls on 16" centers, 1/2" plywood on top for shear, poly on that for vapour barrier, followed by about 8-12" of Larsen truss cantilevered out from the foundation (2x2/2x3 inside with plywood spacer to 2x2/2x3 on the outside), then 1/2" plywood and wooden siding. Roxul batt inside (for easy utilities) with blown in cellulose on the outside.

In Green building techniques | Asked By Terry Sharpe | Jan 12 16
1 Answer

What is the ideal choice of cladding over OSB-Sheathed SIPs?

Hey Martin,

I find myself in a situation similar to one discussed here in the past regarding putting masonry, i.e. thin veneer, over SIPs. The original question was regarding which WRB to use. However for me, unlike the pervious poster, I have time to make course corrections. You previously said this was a "particular risky combination." I would like to know your recommendation of cladding over SIPs if stone veneer is not a good choice.

I live in Maryland, so we get plenty of rain. Just FYI.

Thanks,
William Lohr

In Green building techniques | Asked By William Lohr | Feb 1 16
6 Answers

Should I fix these attic vent baffles?

My builder recently added the attic vent baffles to my house under construction. I looked at them and realized that when I had read about attic vent baffles on Green Building Advisor, these don't follow the recommendations and I'm looking for opinions on how much impact this will have and if I should have them make a modification.

Right now there is no ceiling drywall or insulation up there, so it would be "easy" to make a change, but in a week we hope to have ceiling drywall and insulation blown, so then it would become too late.

In General questions | Asked By Nick Hall | Jan 26 16
7 Answers

Innie or outie windows with exterior foam?

CZ 7 Northern MN, 2x6 standard frame with 4" exterior foam. Exterior foam is basically unknown here. My builder and the local lumber yard person think I should go with innies, because they both feel the windows would get too cold being on the outside of the wall. My windows will be Marvin double hung, fiberglass or aluminum out, wood in. I had thought I would go with outside windows because I thought it would be easier (cheaper) to extend the frame inside, than extend the trim outside, but I am not stuck on either one. Thoughts and comments appreciated.

In Energy efficiency and durability | Asked By Steve Vigoren | Jan 31 16
2 Answers

they didnt completely hook the cold air return on my furnace is that ok what could happen

can just using indoor instead of fresh outside air cause any problems

In Mechanicals | Asked By Roger Blankenship II | Feb 1 16
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