14 votes

OK to remove sheathe and have some wires bypass box?

No. You can't do that. You need a large enough box for the cables to terminate in it, (properly clamped) and the wires to (all) be inside it; and if that means you need a bigger box, you need a bigger ...
Ecnerwal's user avatar
  • 215k
12 votes

OK to remove sheathe and have some wires bypass box?

No, you can't do any of that. The typical solution to the "box that comes with the light isn't big enough for anything except a direct feed" is to: Install another, much larger, box nearby. ...
manassehkatz-Moving 2 Codidact's user avatar
8 votes

Why is my new home only sheathed with rigid material at some locations?

Why not ask the builder about the lack of OSB sheathing in those places? We have lived for 42 years in Dallas, Texas in a 1970 build tract house which has no serious sheathing anywhere. The studs are ...
Jim Stewart's user avatar
  • 21.9k
7 votes

Proper plywood and blocking pattern / approach for 12x10 roof?

That's a huge waste of plywood, and orienting the plywood the wrong way for the primary strength direction. 6 sheets wasting 2-1/4 sheets. You cut one sheet in half the long way, one sheet in half the ...
Ecnerwal's user avatar
  • 215k
7 votes

Why are house frames sheathed on the exterior side?

Well, I'll go for the really obvious answer - you have to have something there, for at least the following reasons: many finishes (like vinyl siding) aren't rated for spanning studs directly you ...
ickybus's user avatar
  • 844
6 votes

Why is my new home only sheathed with rigid material at some locations?

The OSB is there to create a 'shear' wall. The OSB provides additional rigidity to walls that are expected to have to resist lateral forces due to wind, slope, etc. It's not needed on all walls and in ...
Arluin's user avatar
  • 1,015
6 votes

What is this sheathing/ board?

It's Homasote® The way it tears and the surface texture are diagnostic. Celluose - paper fiber.
Ecnerwal's user avatar
  • 215k
5 votes

Does sheathing overlap in corners and what happens to 8' walls?

Sheathing layout is determined by stud layout (and vice versa*), and it's unlikely that a framer lays out studs with an extra ½" in mind. Sheathing usually starts at the end of a wall, or it ...
isherwood's user avatar
  • 138k
4 votes

Should expansion gaps in an OSB3 roof be filled before installing EPDM roofing?

In the end I decided it didn't matter too much (it's a workshop and day to day no one will see the roof). I put some scrim tape over half the roof, and nothing over the other half. I can't tell the ...
Mightwork's user avatar
4 votes

Should expansion gaps in an OSB3 roof be filled before installing EPDM roofing?

Gaps between the sheets are specified by the manufacturer because the gap allows for a bit of movement - expansion, in particular - to be absorbed without causing any buckling in the roof deck. If the ...
Greg Hill's user avatar
  • 30.6k
4 votes

What is this sheathing/ board?

If you want absolute confirmation that it doesn't contain asbestos, there are reasonably-priced labs which can check a sample for you.
keshlam's user avatar
  • 29.1k
4 votes

Plywood subfloor: more seams or no stagger lesser evil?

It seems the general practice is to avoid 'running' seams at all costs. Cut some panels down:
Steve Wellens's user avatar
3 votes
Accepted

Do panel sheathing clips make a shear wall stronger?

Plywood shear clips are outdated and seldom used anymore. (Most designers can reduce the thickness of the sheathing and use T&G edges.) Plywood is structurally rated for roof and floor insulation. ...
Lee Sam's user avatar
  • 3,788
3 votes

Framers installed shear walls, seismic hardware, and the entire roof with the wrong nails. What now?

There are several issues you’ll need to resolve: 1) was a Building Permit obtained, 2) was the contractor licensed and bonded, 3) is the design correct, 4) was the installation incorrect, 5) is the ...
Lee Sam's user avatar
  • 23.2k
3 votes

How should plywood sheathing be detailed around bolts/bearing plates in seismic retrofit work?

You may be able to replace the regular square bearing plate (which features a hole in the center) with a bearing plate featuring a diagonal slot. This slot permits the bearing plate to be placed off-...
MikeOnline's user avatar
3 votes

Should I replace entire house's fiberboard sheathing?

Fiberboard is flimsy and might be damaged in the process of removing the vinyl siding anyway. I'd replace it if the opportunity presented itself. While you have the stud cavities open, replace ...
iLikeDirt's user avatar
  • 12.6k
3 votes
Accepted

Replace rotted plywood sheathing behind stucco

I'm fairly certain the correct way to fix this is "rip off the stucco, replace the rotten wood, apply new stucco."
Ecnerwal's user avatar
  • 215k
3 votes
Accepted

Spacing tool for joints - anyone know what the tool seen here is called?

Looks like a siding gauge: siding gauge (Not a vendor endorsement.)
Aloysius Defenestrate's user avatar
3 votes
Accepted

New siding done, removed gable vent, but no sheathing?

I would cut a patch of sheathing to fit the opening. Then screw a couple of 1x2's or 1x4's that are longer than the patch is wide to the patch. Then place the patch in the opening and the 1x boards ...
SteveSh's user avatar
  • 6,892
2 votes

Can I cut up sheets of cement board and use it as wall shingles?

Cement board and fibercement siding (such as that from GAF or Hardie) are very different things. I'd never have considered cement board as an exterior product, especially in a climate with severe ...
isherwood's user avatar
  • 138k
2 votes
Accepted

How to install a house number plaque on vinyl siding?

I have hung a 4x8 ft trellis spaced 3" from the wall and supporting a large climbing rose on the side of my house through the vinyl siding. No leaks, and has been there for 6 years. Here's how: ...
AndyW's user avatar
  • 700
2 votes

Replacement Siding; Demo Complications

Replacing the deteriorated siding and upgrading with the air barrier and insulation does sound like the correct route - ignoring a problem of that scale just gets more expensive to fix later.
Ecnerwal's user avatar
  • 215k
2 votes
Accepted

How to overwinter a roof during construction?

If anything just a tarp over the sheathing. The snow and wind will ruin the tarpaper. I have had A outbuilding sit through the winter after getting started and having to have knee replacement surgery,...
Ed Beal's user avatar
  • 103k
2 votes

Using sheathing as siding?

Although this is asking for product recommendations I think discussing different types is ok. I have not used Hardie Board without sheathing but believe it is listed for use without sheathing. A buddy ...
Ed Beal's user avatar
  • 103k
2 votes

How to install a house number plaque on vinyl siding?

I would just use silicone, as you can you can just rub it off after it is done (I would expect a small bit of damage but nothing that destroys integrity). You might need to tape it until the silicone ...
DMoore's user avatar
  • 48.3k
2 votes
Accepted

What type of insulation/sheathing material is this?

Finally figured it out after having found another location that was more accessible with the same material. It's Kimsul balsam insulation.
Chet's user avatar
  • 31
2 votes
Accepted

Accidentally ran some plywood flooring parallel to joists on my shed. How big of a deal is it?

Assuming your Plywood is Grade 1 (Birch/Pine), at 19/32 you can run the joists at 20in perpendicular (floor) or 24in parallel (roof) for 50psf, so at 16 o.c. you're well within both limits. I am ...
P2000's user avatar
  • 16k
1 vote

Why is there a fiberboard right behind my drywall?

This technique is used for sound management. The extra mass and space created reduces sound transmission between rooms (or residences, in the case of condominiums, etc.) and from the exterior. You ...
isherwood's user avatar
  • 138k
1 vote
Accepted

Close off an unwanted window

You have a couple of issues: 1) moisture barrier, 2) vapor barrier, 3) wall insulation Yes you need a moisture barrier and it needs to be installed correctly. Tyvek is fine, but I’d make sure it’s ...
Lee Sam's user avatar
  • 3,788

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