DIY: Damaged Plywood Subfloor Repair/Patch 

3:20 sound warning

Nicely done! You showed the same kinda care that most people will want to show with their own home/ things

Thanks for showing the whole process. Have a squeak that is not going away with screws so I am getting the courage to cut over my second floor subfloor and figure out what is the source.

Really helpful. Esp - sawing technique, gluing, and boxing-in on joist. I never saw that and it makes so much sense. Thank you!

Nicely done man. Found the exact same problem in my son's room after I ripped out the old carpet. Thanks for the tips. Saved me alot of time and money

Great job, and I saw the plug for Timberland Sox. Lol.

Good video, Thank you for posting!

If the cut board is stubborn with a pry bar, or the seam is too tight you can drive a screw into the board and use it as a handle to pull it out with a claw hammer.

This was very helpful. i am sure they all do it this way, but I was about to cut a floor and attempt to straddle the beam and then put in a new piece drilled into that beam. The 2x4 nailed to the side, and voiding the beam all together, that's just brilliant. Like i said, they all probably do it that way, but this was the first time i learned that trick

I have a modular home and those are a real pain in the rear end the flooring they use in those is like a dust board. I only have a couple small spots that are damaged in Weak and I'm doing the repair of the same exact way but using three quarter inch plywood. Excellent job my friend

This was incredibly helpful, thank you!

Very helpful video for my upcoming project this weekend. Thanks!

You skipped the screwing in part. What kind of screws and what length?

Very informative! Thank you!

Very educational. Thank you.

Thanks for the video. It was a big help!

Great video man, thank you

Very helpful video. Thanks

Very helpful. Thank You.

Very nice work. Nothing wrong with over kill. Thank you

Thanks Bro this video helps a lot!

Thanks dude, I’ve got the same problem. Boards have been layed badly at our new home which has left loads of soft spots.

Excellent tips!

Tip for next time - the best way to prevent subfloor squeaks is to use subfloor glue and screw, not over-screw. Also a good idea to seal around that forced air dam while it's exposed to reduce leakage.

Great video, thank you!!! : ) Don W., Ohio

Hello Colin. Thanks so much for the great video! I also see some similar cracks here and I can feel there’s something pushing up against the plywood. It is mostly likely the “metal barrier” you mentioned for the forced air. Do you have any idea what is that barrier and is it okay I can feel it pushing the plywood? Many thanks in advance!

So appreciative of this video as someone who really wants to learn this stuff without judgement!! Thank you!

Hi, I already have floor area covered with hardwood flooring. The floor is sagging in an area where the floor squeaks. What can I do? Thanks for your suggestion. Marg.

Nice! 👍

You skipped over the one part I really needed to see -- actually putting in the support pieces or boxes. Thanks anyway though. I admire anyone willing to make a video and put it out there for the rest of us to learn from.

Anyway to repair a subfloor that is raising up underneath the laminate?

If there's ever a tornado or a hurricane depending on where you're at I know for a fact a hundred thousand percent that that peace is not going to be separated

The part I need to replace is under a toilet. Any suggestions?

Next time you’re cutting out the flooring, avoid putting your body onto the cut out section...

Awesome tutorial. Thanks. Do you also need to use PL style glue as you screw the new plywood onto the subfloor joists and 2x4’s?

U not wrong bro, good looks 🤙🏽

I'm curious, would you then install a second subfloor over top for added strength before laying new top flooring?

I love old houses. So, when I cut down to a joist, there is a subfloor, that's about 3/4, and another finish floor of 3/4. Imagine how shocking it is for me to see that flimsy plywood cut out.

Have the same issue a second story bedroom. A soft spot needs to be cut out. What do you do when a piece of plywood is raised at the seam?

Now I'm motivated

How do you do this is you have I joists? I have to put a similar box like yours or holed a toilet, and can't figure out how to make the box strong enough. Thanks.

Why was it cracked in the first place?

How did you secure in the 2x4's? Just screw them in? What type of screws did you use? Thanks!!

Why do you have to box in the area with 2x4s? Can you just attach the new subfloor to the joists?

Since time is money would it be a good Option to replace the whole piece of subfloor instead?

No glue?

I just have a small part in the kitchen I don’t want to take the cabinets out I got the leak fixed I hope I can do it 😳

I believe you did not address the rule that subfloor plywood must span more than one joist? or did someone change that rule without telling me? People need to know about this in case they have a disagreeable inspector.

What kind of screws should i use

Have you checked for wires/ pipes before cutting and wouldn't use a jigsaw better with handsaw

GLUE and SCREW. Center support was not installed well and will be a source of squeeking. It was also not necessary.

Where are you from? You sound like a fellow Canadian

Do you know how lucky you are? You had all your weight on the piece you cut out.

PVC sprinkler system?

Do you do installations?

Can somebody help me? My bathroom floor creaks, as does the second bedroom next to it under a partition wall. I can see where the floor has warped on both sides as it bends under the line of the skirting board. I know I need to repair both sides rather than take down the wall, but in the bathroom near where it's warped there's a towel radiator. Obviously, dreaded water pipes are my concern, as is what saw I need to cut neat along the skirting boards. The floor panelling itself is some kind of thick chip board stuff. How do know thick this panelling is and how do I avoid the water pipes supplying the radiator? They could be coming from anywhere. And what saw cuts down on flooring straight down vertically alongside the wall? A circular saw will cut the outer side of the rectangle I need, but once I remove the skirting board, what do I use? Thank you

👍👍🌹🌹

3/4 inch plywood

You want to tell people to put their depth of their saw to the thickness of the subfloor.

Do you have an email? We are currently trying to figure out what to do with out floor.

soft spot. May be termites. Hope they didn't run into the walls.

I think you used Drywall screws. They may break.

This guy and basically man. Good video though.

Hey bro check out my osb removal Tips I invented half of it it was a new floor almost with 3 "inch nails

basically...basically

cpvc

To many screws overkill, but the frickin thing ain't going nowhere, and the next human in the future is gonna go dear God why they use 100 screws 😂

dont you just love when "builders" do dodgy work and know it will cause issues in the future that you now have to repair. DON'T FORGET to tell people to use the CORRECT screws to use. Wrong screws will cause squeaking.

You’ve got smegma

Good so far but bro you need to edit out your sawing no need for the mic to be picking up all that noise

Wow, where to begin? Ok video, and you sound like a decent dude, but who da phuck works in socks? Rolling shutter, not showing any of the work done, but over talking it! Well, you did show the cutting out of the small piece of sub floor. You should have taken a larger chunk out, or better yet, replaced the whole thing! 5/8 is a little substandard, but, YMMV. I did see you in knee pads, and some tennis shoes later in video. I wish you well, but if ya want professional results, ya gotta try to act professional. I may be coming across harsh, but I see a lot of promise in you, but room for improvement as well, and only meant as constructive criticism. Stay safe and Healthy! Peace! 👍😁🇺🇸

You have no face mask on: you are breathing all that into your lungs....

I wouldn't be on my knees nor cut slow, use the front of your saw guide, looking at the saw and line is not going to teach you how to use your guide.