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How to connect Vapor barrier to joists basement

Just go straight up to the underside of the subfloor. The existing XPS was probably misguided. Its surface will still be freezing cold in the middle of winter, so water vapor would condense on it. The ...
popham's user avatar
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2 votes
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Floor joist was cut and repair was secured with drywall screws. How to properly repair?

No need to worry about sistering that joist. Since the headers are less than 3' away from that black, steel beam support, IRC R502.10 indicates that the single trimmer is adequate: Single trimmer ...
popham's user avatar
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3 votes

How do you level and fasten joists over uneven concrete for a deck?

For the area with not much room for lumber, consider making a nice neat linear pile of mortar at an appropriate height and slope to fully support a (pressure treated) 2x4 laid flat (1.5" thick) ...
Ecnerwal's user avatar
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How do you level and fasten joists over uneven concrete for a deck?

Sounds like a plan, I've done this before, basically where the joists are over the slab treat them like a bottom plate, so that means support them at regular intervals suitable for their thickness. ...
Jasen's user avatar
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How do you level and fasten joists over uneven concrete for a deck?

See IRC R507.6 for joist span lengths. Install blocking between the joists and spaced according to the allowable joist span lengths. Instead of using blocking with the same height as the joists, buy ...
popham's user avatar
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1 vote

How to fix twisted floor joists and install blocking

Some suggestions from my experience... I wouldn't attempt to get everything perfectly square and straight. Over two decades your lumber has set and hardened, and you may find frustration and ...
isherwood's user avatar
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How to fix twisted floor joists and install blocking

I’m no expert, so I could be wrong, but can steam help make wooden joists more flexible? Then you could use G clamps at various intervals to twist the joists back into place, once they’ve dried from ...
Matt's user avatar
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Can my floor hold 2100 lbs of dead load?

caveat: me be mechanical, but not structural, engineer. Even more worrisome: my bass-reflex speaker box hobby. 3 corners of your booth are on foundation walls; check that allowed compression load at ...
parmstr's user avatar
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Stiffen Floor with bridging between open web floor Trusses?

https://www.youtube.com/watch?v=y1UOV1xROn0 On open web trusses this is a good solution if you can get a good measure on the weight needing to be supported. If its simply a load deflection issue you ...
Anton H's user avatar
1 vote

How do I repair a floor joist which has a hole drilled less than 2 inches from the bottom?

Those holes are effectively notches. If they're in the middle third of the span, then the notches are out of conformance with the IRC. If they're outside the middle third of the span, then the maximum ...
popham's user avatar
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1 vote

Is this mold on my floor joists?

I don't see anything there that concerns me. It looks like the joists were stored wet for a bit, maybe on concrete. What I would do: Give it a wipe with a white cloth. Does it come off readily? Is it ...
isherwood's user avatar
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