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Questions tagged [joists]

Horizontal support structures beneath the floor running between load bearing walls.

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2answers
70 views

Cut Floor joists for HVAC

I own an old home, circa 1919. In the 70's, when the new furnace was installed, they cut through the floor joists to run the air ducts. Awesome. So in direct correlation to those cut joists, are ...
3
votes
3answers
13k views

How should I add new joists and flooring to a loft space?

First off, basic floor plan of the loft: Hard lines are the walls on the first floor underneath, joists on the first floor landing run left to right so does that mean the central wall running front ...
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1answer
68 views

Shaving a floor joist without a planer?

I have an interesting problem. I been in the process of remodelling my living room and dining room - paint, lights, floor, essentially the works. And in doing so I discovered one of my floor joists is ...
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1answer
72 views

Interior wall construction - Is it possible for this to be load bearing?

I have a 2-story brick house built in 1940 with balloon construction. On the first floor, I have an interior wall between my kitchen and living room. I have done (I think) my homework, looked at the ...
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0answers
25 views

Floor Joists And Notched On Sill Plate

I have mastered many things in life, but carpentry is not one. I need to replace some flooring, and floor joist, that rotted from water damage, and it does not look like how i have seen others. The ...
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1answer
139 views

Is joist blocking safe on these old warped joists?

I purchased a house built in 1960 and like other people have mentioned the terrible bounce, I got the same exact situation. I'm thinking of installing blocking to strengthen the floor. The 7 joists ...
3
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2answers
112 views

Joist hangers to use for rough cut 2x8 (2 3/4“ x 8 3/4”)?

I'm looking for the right size joist hangers for my project. I have an old house with rough cut oversized joists and can't seem to find a joist hangers that will work. I'm nailing into a 2x10 ledger. ...
1
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1answer
78 views

Sistering a split joist not code?

I know that building codes vary by jurisdiction so for the purposes of this question I am in Baltimore County, MD. We have a split joist in our basement. It's a 2x8, about 10 feet long. One side is ...
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0answers
56 views

How to repair cut joist around pipe *after* framing and drywall

I'm finishing my attic and have just realized that my rough carpenter screwed up by not addressing a cut joist. In photo 1, you can see that the joists have been sistered with LVLs, but there is a gap ...
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0answers
20 views

Find joists in plaster ceiling

My plaster ceiling is cracking and the advice I’ve gotten is to cover it with dry wall. The issue I’m having is how to locate the joists in the ceiling. Is there an easy way to do this to make sure ...
2
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1answer
195 views

What's the best way to insulate an attic with 2x4 joists?

My 1938 home currently has zero insulation (aside from a few fiberglass batts haphazardly tossed about). The ceiling joists are 2x4 (spaced 16 inch OC), rather than the more modern standard of 2x6 or ...
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0answers
36 views

Uneven floors from settling rim joist

We're trying to fix the uneven floors in our 850 sqft, 80 year-old house in San Jose. Our contractor opened up the floors and the problem appears to be that the floor joists rest on a skid, while the ...
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4answers
40k views

How do I meet the 7 feet high ceiling requirement after finishing the basement?

My basement ceiling joists are exactly 7 feet above the concrete slab. The requirement for finished living space is 7 ft from the finished floor to the finished ceiling. Since I'll loose a couple of ...
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3answers
6k views

Knee Brace support Hanger for Treehouse

I am going to be building a Treehouse soon, and am researching the best and most cost effective means to do so. I am good on the platform and beams (using Treehouse Attachment Bolts), and am going to ...
2
votes
1answer
64 views

Whats the best way to secure a loose flooring joist where mortar has crumbled over the decades?

My kitchen floor sits on joints that are mostly OK. One wobbles though as I walk over it near a wall. It moves 0.5cm (0.25"). I lifted a floor board and had a look. You can see the crumbled mortar ...
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2answers
55 views

How to safely attach block-and-tackle to 2x8 ceiling joist(s) to handle 1000-lb load?

I'd like to make or build a block-and-tackle in my garage to be able to lift up to a thousand-pound load (e.g. a moose). I think I have a handle on the design of a block-and-tackle and the selection ...
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1answer
235 views

Removing diagonal truss brace?

Looking to put insulation, plasterboards on the garage ceiling and some down lighters, Not a massive amount of heavy stuff is currently stored there (primarily boxes etc). There are 5 joists, joist ...
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1answer
35 views

Span calculator using arbitrary spacing?

My "new" 72-y/o house is... interesting. The garage is much younger but still I just raise my eyebrows at some things. One of them is the loft/attic area in the garage. I wanted to move all my ...
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2answers
93 views

Should I reinforce these joists at the central beam? If so, how?

Vaguely similar questions have been asked, but I believe this situation is unique enough that I’m looking for some specific advice. I have a floor that is framed with 2x8s, 16 O.C., spanning roughly ...
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2answers
319 views

How can I fix a squeaky hardwood floor in a small hallway?

Trying to fix squeaky hardwood floor in small hallway, think joists run parallel to floorboards on sides, near or under the walls on either side, can't find any with stud finder that run at 90 degree ...
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0answers
40 views

Repairing cut wooden floorboards on either side of the main joists

How do I repair cut wooden floorboards that have been cut on either side of the main joists, as now the floor is squeaking and bouncing all of the time? I have tried attaching baton underneath with no ...
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1answer
59 views

Adding floor joists to an attic

I am trying to add floor joists to an attic and intend for getting decent amount of support for plywood flooring and storage. The existing truss is 13' across and 24'' span between 2x4 ceiling joists....
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2answers
4k views

Should I add plywood or OSB between sistered beams?

I'm going to stiffen up my main floor joists by sistering then bridging them. In the past a friend put something in the middle, is that standard? Should I put 1/2" plywood or OSB in between?
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1answer
1k views

Will my existing deck support the weight of a new hot tub?

I have a hot tub on my deck. I'm ready to fill it but now wondering about the weight on it. The deck is 10' wide with 2x8 joists on 16"centers. The tub is 7' x 7'. When filled with water and people ...
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0answers
39 views

spacing of steel studs for ceiling leveling

I'm renovating a single-family basement. The floor joists above the basement are 2x8 douglas fir, mostly spaced 12" OC. The basement ceiling will be finished with a single layer of 1/2" drywall. There'...
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3answers
102 views

Repairing cracks on deck joists

This year, being a beginner in handyman skills I decided to replace the deck boards and railings of my deck. When I bought the home about 1.5 years ago the professional who checked the house for me ...
1
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1answer
72 views

floor joists splitting at non-beam end

I'm looking for a good way to correct and arrest horizontal splitting of some floor joists where they rest on the top-plate below. The joists are 2"x8" (nominal), spaced 12" OC, and the ends away ...
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1answer
34 views

An idea to mix deflection rated I Joists?

I'm making some hypothetical blueprint ideas and started thinking about the various floor joist options. In our neck of the woods, I-Joists are by far most common with floor truss systems becoming ...
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1answer
126 views

Using strong magnets for hanging window blinds

I have a wide window a touch less than 6' across and I want to install a blind with 2" deep horizontals. The blind that was within my price range comes with five support brackets, which can either ...
7
votes
1answer
5k views

How should I attach a chin-up bar to floor joists?

I want to mount a chin up bar to engineered I-beam floor joists. Am I safe to mount it directly up into it with lag bolts? If the spacing isn't correct and I span some joists with 2x4s, should I run ...
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0answers
41 views

How to install second subfloor?

I'm putting in 12mm floating laminate with a 4mm felt underlayment in my living room and I noticed some bowing in the current subfloor to the point where I can see it while standing up. The high ...
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1answer
40 views

Running wire through sole plate and joist at an angle

I am cutting a new outlet in the wall between my living room and dining room. Below is an unfinished garage with completely accessible joists where I can run wire. There are double joists directly ...
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1answer
54 views

Don't bore/notch in middle third of a joist… span or member?

Suppose I have a continuous joist supported somewhere in the middle. For ease let's say it's a 24 foot continuous joist, and there's a bearer right in the middle at the 12 foot mark. Here's a picture ...
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1answer
89 views

Leveling joists for drywall installation

So I asked a question a couple of days ago about leveling my ceiling joists. I got great recommendations, from strapping with 1X3 straps, and also metal studs. So I placed String Lines across and ...
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2answers
360 views

How to level uneven ceiling joists for sheetrock placement

So I noticed that my 1961 year old one floor home joists are not even, some areas it's bowed down. I ran a string line, I see about 1/2 inch low points in few areas. I have read the standard fix to ...
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2answers
280 views

Can you sister floor joists with smaller boards?

Does adding a sister that is smaller than the original joist actually increase strength at all? If so, does it need to be sistered at the bottom (so both beams touch the sill) or does it still add ...
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2answers
37 views

Should an interior non-load bearing wall stack up to a joist or stud?

I am trying to add a partition in my garage and the ceiling joist does not line up with the wall studs. So my question is which one do I go by?
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2answers
182 views

Nailing a joist hanger to ledger with concrete behind

So I've got a 2x10 Ledger attached to a concrete wall. I have a double 2x10 joist that needs to connect to the ledger. I have a joist hanger for this but the installation requirements say to use 16d ...
5
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4answers
8k views

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

I have three floor joists that have approximately 1/2 inch hole in them less than 2 inches from the bottom. Is there a recommended fix or approved method to correct this to meet code? These joists ...
1
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1answer
44 views

Storing ladder below subfloor in kitchen

My kitchen height is 9 feet. To maximize storage, I am planning to have cabinets all the way upto ceiling. To avoid lugging in a ladder all the time, I am planning to build storage under subfloor. ...
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2answers
37 views

Solving subfloor squeaks

I am planning to remove carpet in a living room and dining room area of my house and replace it with floating laminate flooring. There are some spots in my current floor that squeak so I was planning ...
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0answers
61 views

Need advice on correcting a floor dip

I have an older house (1940’s) with a dip in the hallway leading to my downstairs (1st floor) bathroom. From wall to wall the hallway is 14 feet with the wood floor joists below running parallel to ...
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3answers
2k views

Reinforce joist near rafter for porch swing

Recently purchased home and saw existing eye lag screw or bolt coming from front porch ceiling. Rolled the dice (hoping for bolt + reinforcement), did not remove vinyl ceiling to inspect carpentry. ...
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0answers
116 views

When does a splitting floor joist become a problem?

We recently moved to the US Northeast and bought a 6 year old, two level plus basement house. I've been finishing the basement and have noticed several floor joists are splitting. I come from a ...
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2answers
56 views

Anchor drywall edge to ceiling next to a wall running along joist?

I am working on a wall that will separate the main basement area from the storage area (with a door). This new wall will run along the above floor joist which removes the possibility for drywall ...
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1answer
79 views

ceiling joist allowable span southern california

I'm adding ceiling joists in my garage. It's a 19' span between walls, and I'm using structural or #1 lumber. Should I use 2x8x22 OR 2X10X22 spaced 12" on center? I'll be adding 1/2" or 5/8" drywall.
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0answers
22 views

Can you post a 2nd floor joist beam directly to basement?

I have a house with a middle beam in the basement; all of the first floor joists lap on top of the beam. There's a bearing wall on top of the beam that goes 2/3 the length of the house. Most of the ...
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2answers
788 views

Is there a way to sound proof my basement while I've got part of the ceiling open?

We had a header beam installed in our basement. The floor joists are exposed for 1ft (~30cm) on both sides for the length of the beam. The basement is an apartment, so I'd like to add some sound-...
1
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1answer
96 views

Main Floors uneven after attic conversion

We hired a contractor to convert our attic into living space. Long story, short...he was a nightmare and left with out doing any of the finish. Now, the floor joists on the first floor are raising ...
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2answers
81 views

How to repair a beam of structured 2x10s

My house has a beam of 5 sistered 2x10s that are uneven. The beam has joists resting on top of it to support the floor, and joist hangers on one side to support a lowered room. Many of the members ...