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17 votes

Removing Load-Bearing Wall in Timber-Framed House

What you're proposing and/or actively doing is a major structural change to the building. As such, you need to be sure that it's both safe and building code compliant. There is no way any random ...
jwh20's user avatar
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14 votes
Accepted

How should I deal with this protrusion in future drywall ceiling?

Jack it into place and nail it (spike it) in while jacked into place. Don't overdo and jack up the whole laminated beam - just jack up the loose bit, and use suitable spikes into holes somewhat ...
Ecnerwal's user avatar
  • 210k
14 votes

Any idea what this structure in my attic might be?

My guess is a former light well. It looks like we are seeing the BACK of the drywall there, which would corroborate this a little. If you poke a hole and see the drywall has been painted white on the ...
jay613's user avatar
  • 36.9k
13 votes

How can I temporarily support a ceiling with embedded heat tubing?

It's just not necessary to support the framing from above. Temporary walls are put up under drywall all the time, and the gypsum doesn't crush. Actual plaster certainly won't. Just use a 2x6 or wider ...
isherwood's user avatar
  • 135k
12 votes

How do I screw through a metal bathroom fan box to affix it to the joist?

Almost any wood screw. It takes only say 3/4" of penetration into a joist to secure such a housing. Thread type doesn't much matter. Diameter doesn't, either, though thinner screws will go in ...
isherwood's user avatar
  • 135k
10 votes
Accepted

Joist are not properly attached to the band joist - found by home inspector. What does the repair entail?

Your rim board's purpose is to prevent the floor joist end from rotating. Imagine standing a couple of 2x12s on a flat surface with a sheet of plywood on top. Standing on this plywood the platform ...
popham's user avatar
  • 8,834
8 votes
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45 degree beveled deck board ends butt joint at same joist

I've done it myself with both wood and synthetics and seen it on many other decks. I don't think there's anything wrong with a slanted lap. Protruding edges are no more likely or severe than they ...
isherwood's user avatar
  • 135k
8 votes
Accepted

How to add "partial" ceiling joist to support mini split cassette that needs 16" OC joist

You don't even need full 2x6 here. 2x4 properly aligned should provide adequate support. I would use the proper hangers for the joints. Image source, no endorsement implied Don't think of it as ...
Ecnerwal's user avatar
  • 210k
7 votes

How do I screw through a metal bathroom fan box to affix it to the joist?

There exist "self drilling" screws that have a hardened drill point for piloting their own holes through metal, but these tend to have threads that are too fine for grabbing onto wood ...
popham's user avatar
  • 8,834
5 votes
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Proper way to reinforce floor joist

If the original joists have proper bearing, the sistered joists are primarily to add stiffness. They can rely on the original joist bearing for load. That bearing would need to be adequate for the ...
isherwood's user avatar
  • 135k
5 votes

How far does a joist need to overhang past a supporting wall?

None. In fact, it only needs to bear a few cm. There's no requirement whatsoever for overhang. You can even butt-join joists in the center of a typical wall. Minimum bearing is often the same as a ...
isherwood's user avatar
  • 135k
5 votes
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Can I use subfloor to align a house-length starter row of hardwood flooring to the house, rather than to a single room?

Don't use subfloor seams for layout. Human perception seizes on out-of-parallel lines, especially if the lines are close to each other. This means that you want to minimize the flooring's deviation ...
popham's user avatar
  • 8,834
4 votes

How can I temporarily support a ceiling with embedded heat tubing?

It might be possible but something you really should have an engineer design. That ceiling sounds heavy with the plaster and tubing. The problem with supporting it from above is the weight pulling ...
crip659's user avatar
  • 23.7k
4 votes

How to add ceiling joists to 20ft wide garage

I guess this comes under option 3. For 20 foot material these days, talk to your local suppliers about I-joists. Probably the most structurally efficient way to span that with wood, and they won't be ...
Ecnerwal's user avatar
  • 210k
4 votes

How can I drywall basement ceiling with gas and water pipelines below the joists?

Attach furring strips that are taller than the pipes and run perpendicular to the joists. Then attach the drywall to the furring strips. But as others have commented, a basement with a drop tile ...
Greg Hill's user avatar
  • 30.3k
3 votes

What lumber should I use when replacing floor joists?

It depends on the wood species and grades you have available at your local lumber yard, but whatever it is, your best bet is to look up the maximum spans here https://awc.org/calculators/span-options-...
Cheery's user avatar
  • 4,843
3 votes

How to secure floor joists on top of beams

Use hurricane ties. As the name suggests, they're meant to keep the building (or, typically, the roof) from being lifted up by a strong wind. They cost about a buck each, which is well worth it. In ...
Mike Baranczak's user avatar
3 votes

I joist flange cut into

Cutting an I-beam is not OK. Most of the instruction sheets for these beams state not to cut or notch it. It could possibily be sistered with additional wood but redoing the plumbing would be a ...
JACK's user avatar
  • 79.9k
3 votes

I joist flange cut into

I don't think it's okay, but a lot depends on the regulations in your area. You should discuss it with your architect/engineer. Or raise it with your builder and ask them to write a waiver (for the ...
Rohit Gupta's user avatar
  • 6,089
3 votes
Accepted

How Do I Frame an Opening in My Bathroom Floor

You can use single headers (same size as the joists) for spans up to 4 feet long. Doubled trimmers (the original joists plus a sister each) are necessary instead of single trimmers unless you meet an ...
popham's user avatar
  • 8,834
3 votes
Accepted

Do you leave gap between the framing wall and ceiling joist?

It is common for framers to leave a gap between the top of a partition wall and the upper anchor point. (truss cord or floor joist). If you buy precut studs, they are sized to give a 3/8" gap. ...
RMDman's user avatar
  • 27k
3 votes

How do I determine why my town house floors are uneven all over?

I can only offer general suggestions with what little I know about your structure. Determine whether you have tilt or sag in the floor. Us a straightedge, level, or carpenter's line to see if the ...
isherwood's user avatar
  • 135k
3 votes

Hanging Chair from Ceiling in Apartment?

Expanding on the comments already in place: your ceiling absolutely cannot hold that chair without anchoring into a joist one way or another. You are correct, the expansion screws will not work for ...
Jay McEh's user avatar
  • 130
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
  • 210k
2 votes

how much weight can a 2x12 spanning 6' hold?

Most floors are usually made to ~40 pounds per square foot. Floor joists for this are usually size so an inch of depth to a foot of free span, 2x6 for 6 foot span. You have a bit over 24 pounds per ...
crip659's user avatar
  • 23.7k
2 votes

How to add ceiling joists to 20ft wide garage

Another possibility for #3 is to insulate along the sloped surface.
tilde's user avatar
  • 230
2 votes

How to add ceiling joists to 20ft wide garage

Other ways - Acoustic drop ceiling. In a garage the drawback is moisture. Use smaller tiles 2'x2' and get moisture resistant tiles. Wind could blow the tiles up when the garage door is open so you'd ...
Platinum Goose's user avatar
2 votes

Garage overhead storage installment

Your drilling into the bottom chord of pre engineered trusses. If you are positive that you hit metal, there may be a splice or mending plate there. Usually those are on the side of the chord, or ...
RMDman's user avatar
  • 27k
2 votes
Accepted

How to minimize ceiling/drywall damage when installing the internal home side of a deck lateral tension device

There may be options that do not require the interior to be disturbed. Check thisLateral Deck connections
RMDman's user avatar
  • 27k
2 votes

Deck - Options when joists are too short for deck length

When I did my deck, I pretty much followed your top drawing. The shorter joists were much easier to handle. I doubled up the middle joist and put in two deck posts to support it. I had my joist ...
JACK's user avatar
  • 79.9k

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