How to Remove and Replace a Rotten Subfloor

Repairing a damaged subfloor is serious business, but it doesn’t have to be scary. Learn from Ashlee & Cody as they diagnose their moisture issues & fix their rotten kitchen flooring.

Difficulty Level: Advanced. If you are not 100% confident with removing and replacing a subfloor, Lowe’s recommends that you hire a professional. Call 1-877-GO-LOWES or visit https://low.es/36meRw8 to learn more about installation services through Lowe’s.

Tools & Materials:

Kobalt circular saw – https://low.es/2RgfH4Y
Bosch laser measurer – https://low.es/2MtHQog
2×6 pressure treated joists – https://low.es/2WhIB8c
Kobalt impact driver – https://low.es/2WiMfPw
Subfloor adhesive – https://low.es/2FLFa4W
Plywood subfloor – https://low.es/2RMBJ49
Sledgehammer – https://low.es/2TWBRL7
Kobalt miter saw – https://low.es/2RgfH4Y
Kobalt reciprocating saw – https://low.es/2DfmN5Z
Wrecking bar – https://low.es/2W2n9nB

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  1. I have to ask because I’m clueless but Ive been researching this and need someone to solidify the response for me. Are the exterior walls always load bearing and if so in the video don’t they use the reciprocating saw to cut flush to the wall. My real question is if I cut flush to the exterior walls with a reciprocating saw don’t I still need to take out whatever scrap is left under that bottom plate of those walls? An then replace completely with new plywood under the plate or can I do what they did here and just flush it up to the wall (also piece of old plywood that’s still under bottom plate)? Hopefully I’m not making this difficult for myself by overthinking but I need to make sure to stay safe.

  2. I thought you said this house is in pretty good shape? I hate to see a house that is in bad shape. I like when you said, these little fixes like” starting from scratch and tear out the cabinets. I have a better idea, find a better house

  3. The one mistake I am seeing is that the boards he is laying down are breaking at the same place for example at 6:20.
    If the bottom plyboard sheet is a whole sheet the one on top should break in the middle of that one at the 4 foot measurement and so on.

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