How to replace repair rotted sub floor, rotten floor. Easy! Home Mender

How to replace repair rotted sub floor, rotten floor. Easy! Home Mender


Hello this is Dustin with Home Mender and today, we’re going to be tackling a hard-core problem. Subfloor repair. Scares a lot of people and why wouldn’t
it? You can fall right through the floor. We’re going to take this dangerous fall
hazard and button it up. I’m going to show you how. Let’s get to it. I’ve got a pretty gaping hole here. Exterior leak has ran down the wall and rotted out the floor. It’s in a corner so it’s going to be
a little tougher. First thing I need to do is find out which
way my joists are running. I’m going to reach in and I can feel the
joist this way I can’t feel a joist that way which means the joists are running this way. We want to find that line so we can cut this piece of subfloor out. You do want your new floor to share a joist with the old floor. Tape measure and I’m going to stick it in
the hole towards the joist to find out how far over it is. I’ve got 9 1/2 inches to the ugly part here. I’m going to measure over 9 1/2 and I’m
also going to go to 11 because a typical joist is an inch and a half thick. Now I want to cut my old sub floor out to break that joist. So I’m going to measure over to the joist
from the wall I’ve got 18 3/4 to the center. I’m also going to measure over 18 3/4 here
and make a mark. Now I’m gonna take a straight edge. And draw that line that I’m going to cut. Looking good. Now I’m just going to go past the ugly here
when the board starts feeling a bit more sound, put a square on my line, so I can get a right
angle.. carry this one over to the wall. Now I’m going to go ahead and pull off this
shoe moulding so we can get the floor cut. I’m also going to reach in and see if I
can feel any electrical lines or plumbing lines because I’m going to be using a Sawzall
and Skillsaw and I don’t want to cut anything I’m not supposed to. Looks like we’re clear. Let’s cut. Now, typical subfloor is three-quarter inches
thick. I’m going to set the depth on my Skillsaw to 3/4. Now this was the perfect cut. You can see how this is going to split this
joist. This board is sound and our new board is going
to rest right there on the side. Now I’m going to use a Sawzall to clean
up the edges. All right, so I’ve got my rotted subfloor
out. I’ve got it to where it is sound and good
and we split it on this joist so this joist is going to support this side of the board
which is awesome but I still have three other sides that are going to need support. This one especially because it’s the door
and this is where people are going to be stepping in. But i definitely want to get support to tie in my new board so it doesn’t flop and it doesn’t sag. The plan is to sister on with 2×6’s to this
backboard and build it out enough to catch the end of my new subfloor. We are also going to tie in here and one
in the front as well. Now, I’m going to secure them with 3 1/2
inch deck screws. Across the back and I’m also going to toenail
them into both of the joists. Now that I will support a super fat guy. Now we are going to run a longer board alongside
the wall here and we’re going to go about a foot and a half past my opening so I can
secure that to the existing floor and toenail it to the other side. Now we ran it so far so we can put a couple more screws in it on down the line and give it some girth. Last but not least, we’re going to tie in
this little side. All right . We’re all framed out, let’s
get the three-quarter board cut and installed. Now we install our three-quarter subfloor. And secure with deck screws . Fitting nice, now all we’ve got to do is cover it up with something pretty. So that’s it. Super easy. We just rocked this cut out rotten subfloor and replace, built it up and now it’s even going to support your bigger friends. So for Home Mender Inc, this is Dustin. I hope you learned something today and if you did… don’t forget to click subscribe. Thanks for watching.

100 thoughts on “How to replace repair rotted sub floor, rotten floor. Easy! Home Mender

  1. id like to see more videos, please donโ€™t go blind from lack of safety equiptment. squinting your eyes doesnโ€™t stop flying shards of wood unfortunately ๐Ÿ‘๐Ÿป

  2. I don't know why but I love videos like this. I don't have a house or plan on having one but I do want to try renovating a fixer for a fun project.

  3. We are doing the same thing on our rental house! Thank you for taking the time and effort to show us novices how it is done. We can not afford a contractor so my husband, who is wheelchair bound will do the work! Thanks!

  4. This is a great vid. I just wish I could see under the house. Like, I'm not sure how you got that first 2ร—6 in.

  5. Screws, and especially dry wall screws, do not have near the shear strength (resisting pressure from the sides) as nails. They are surely a lot faster and easier than nails unless a person has, or has access to, a nail gun so that the sister joist's or bridges/braces can be toe nailed. Just an observation. The only other thing, if the floor was rotted that closer to the door I might would have cut out the floor a little further to go to the other side of the door to make sure there was good with in that area too. I wasn't there so maybe he had checked that out and found that it was good. Other than that, a good repair. Thankfully it wasn't under hard wood or heart pine flooring, as I'm about to have to repair in a 110 year old Greek Revival.

  6. Excellent step-by-step video. Really helpful for a beginner like me. Just wondering one thing – how come you screwed the new sister joists over existing floor (vinyl)? The screws would show, right? Or perhaps you will put new flooring material over it?

  7. I need to do this in the bedroom where me and my husband are at. One day we went to go lay down and we felt something was off and we moved the futon, and found the hole. But there's carpet throughout the room. ๐Ÿ™

  8. Ok. You the job to fix the rotten spot on floor is good. I am missing one thing though. How did address the exterior door leak that caused the floor to rot? How long is the new board on the floor going to last? Until the house is "sold" to next person?

  9. Good tutorial. A few comments/recommendations.

    If subfloor was glued and nailed could be problematic getting the subfloor to release. Also when cutting along the center line of the floor joist, be sure to remove all the nails holding the subfloor down otherwise you could trash your circular saw blade.

    Usually the subfloor is nailed down with ring-shank nails which are a bitch to get out.
    Here's an alternative method. Instead of attempting to cut the centerline of the floor joist, cut along the inside edge of it with a circular saw finishing with a recipro-saw then "sister" a 2 x 6 joist to the existing as shown on other walls. This also is a more forgiving cut if you're not on the centerline of the joist giving you an 1.5 inch to screw down the subfloor replacement etc.

    mi dos pesos (.00002US)

  10. Can yoh help me with some advice. i replaced a rotting subfloor in my restroom but my subfloor in the living room is buldging up like i can see the 2x6s running. Is it the same procedure i wouldnt think so cause sinking is different then rising help

  11. Hey Bro super cool video! Talent extreme!
    I know the video is under 6 minutes lol.. but around how long did this project take, start to finish?

  12. My living room floors in bad shape like that so I've resorted to just laying new plywood on top of the carpet in the worst spots.

  13. I need to replace a few floors in our house. My husband is clueless as he is a gamer not a hardware kind of guy but I can do it if I just watch someone and pray Lol.

  14. Great work. At 2:45 you make an excellent observation and comment, "Now this board is sound" referring to the joist, but I thought I would add some emphasis to the need of checking that joist because you're a pro and made that determination quickly. When the subfloor is that rotten it is good to thoroughly check if the joist is sound. In my house, when I removed the subfloor I found that the leak that caused the subfloor to rot also rotted out the joist and it had to be reinforced by sistering (a whole process that maybe Dustin could do a video on). Just a thought.

  15. I was gnna figure stuff out but if i start working on the kitchen no one will help me lol so its the way it is but i will be looking into the bathroom floor toilet is sinkin in

  16. My left ear rings whenever I am in a room full of people from years of leaning into power tools. Put some plugs in, please.

  17. Thanks for this, most helpful for my bathroom reno. What are you using on your drill to throw those screws in so quickly?

  18. Just bought a house a few weeks back and I was removing the carpet on the second floor and noticed a small portion of the wood Subfloor adjacent to a bathroom wall was slightly damp…not significant but visually noticeable and by touch. Looked at this video right away to see if I need to cut out that piece of subfloor after my plumber fixes the source of the leak tomorrow….thanks for the straight explain.

  19. Best video for this topic Iโ€™ve seen. No fucking around, no bullshit feelings, subtle humour and decent editing to remove shit. Well done sir.

  20. DUSTIN YOU ROCK and there are some parts of the vid I did not hear the sentences correctly.
    Six Question:ย 
    (1.) BUT DUSTIN are you telling me that it is possible to repair a floor in sections RATHER THAN an entire floor????????????????? AMAZING
    (2.) but Dustin what if one hole within that one section of the floor reaches all the way down to the ground foundation….. is partial restoration still an option?????

    (3.) You state ** 0:50 – 0:53 ** that you want the new floor to share a "JOIST" with the old floor/ what is a "joist?"

    (4.) You State ** 2:09 – 2:11 ** you will be using both a Saw saw and a skill saw?

    (5.) YOU State * 3:27 – 3:34 * The plan is to sister on two LEFT SIXES??? and build it out enough to catch the new floor (Please type that sentence so that I may know exactly what you've stated?

    (6.) @ ** 5:00 ** IS it NECESSARY to use a "3 quarter board" for the floor/new sub floor?

  21. ๐Ÿ‘๐Ÿปย ๐Ÿ‘๐Ÿ‘ DUSTIN – AMAZING- THANK YOU FOR SIMPLYING THIS PROCESS-A TRUE GOD SEND ๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป๐Ÿ‘๐Ÿป

  22. building inspector said: nope, nope, NO! Done wrong. Theres a building failure and it needs a jack up to be level plus vertical support added before inspecting the rest of the landsliding door damage. There was no building level used in this repair. You need to apply for a building consent to do these kind of repairs so that the damage can be lodged legally on who is legally liable for the build being unsafe when theres a homeowner that is in a legal position to sue. Which is what first home owners would get caught into.

  23. Clever, but why screw through through the linoleum in front of the base board instead of just taking the linoleum up and removing the base board?

  24. Thanks for the video. I have a rotten subfloor from flooding and needed a video for how to handle sections by the walls. Perfect!

  25. Hi! I'm a "Bigger Friend"! I'm moving in with a friend into a real fixer up, so I'll be sure to watch your videos A LOT!

  26. did you fix where the leak was coming from so it will not rot the new studs out … find the cause of the leak

  27. What do you do if the hole isn't near a backboard? Do you just put the 2×6's between the two nearest joists and toenail them in? Is that enough support?

  28. What you don't see is the bottom corner door stud and sole plate may be rotted out with termites. If it's bad enough, you could smell the termite droppings. I would remove a little square of sheetrock on the bottom to take a look see. The damage could extend to the other side of the wall. It's never easy unless you're lucky.

  29. I'm getting into some repair work on my home and am so grateful I found your channel! Thank you for the clear and informative tutorial!

  30. Only thing I would do differently is use plywood or hardwood instead of that particle crap. Good video though and not long winded. Also u use the tools most ppl have instead of saying "that was easy wasn't it" and put away $4000 worth of tools most of us don't have

  31. Thanks for making this video. It gave me the courage to finally tackle the soft subfloor problem in our laundry room after procrastinating for at least 2 years. I couldn't get a professional to come out as we live in a rural area.

  32. Thank you I have the same problem, although my damaged subfloor attached to my tub and toilet, I think it's a worse job, anyway I will try to tackle it with your video help. I did see though you screwed in some of the boards from the top through existing vinyl tiles? Would you not pull that up first since it looks like you'll have to replace the flooring anyway? Thank you again

  33. Not the right video but I need help. Old water heater had nasty stuff in it. Replaced water heater and some water went into the exhaust hole. Will that cause the pilot light not to light? Gas btw

  34. Great video – am going to have to do this on the mother-in-laws mobile – leaky toilet has done some damage ๐Ÿ™

  35. Hey Thanks for the video. My woman have a Hole in her hallway next to the washing machine. I've never thought of doing a job like this or have any experience like u but it really need fixing. I don't have the tools for it or want to pay anyone to fix it because I want to do it myself. I see that whoever lay the wood in this whole house it's all really thin and it's terrible

  36. Hello…this speaks to my 150 year old home and saggy areas of subfloor! Dustin, no one shows us like you do…good info, no b.s…you the man!

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