What do you do with a rotted subfloor?

1. check subfloor to see if areas need to be removed. Remove the Damaged Floor Material.
2. Add the Support Framing as Needed. Use 2×6 lumber to double or “sister” the existing floor framing and provide a solid base for the new plywood subflooring.
3. Measure and Cut the Plywood.
4. secure plywood to joists.

How hard is it to replace subfloor?

It’s significantly more difficult than the original install. However, with the right tools and personnel it’s about midway on the carpentry skills. If the subfloor has been glued to the joists then that increases the difficulty level tremendously.

Are rotten floor joists covered by insurance?

Wood rot or floor joist rot is typically not covered by a homeowners insurance policy. If the rot occurs as a result of a peril that is covered by your homeowners insurance, you might be in luck.

Can subfloor be replaced from underneath?

If you notice a soft spot under carpet or wood flooring, it could mean that the panels below have weakened. While replacing the entire subfloor may not be necessary, you will have to replace the damaged pieces to prevent the rot from spreading.

Can I replace my subfloor myself?

If your subfloor is in need of replacement, the damaged portion will need to be completely cut out. This also requires the removal of all floor covering over the problem area as well as the accompanying underlayment materials. The process for this portion of the job will vary based on the type of flooring you have.

Can you replace floor joist without removing floor?

In cases where a joist is intact, it’s possible to sister a new joist alongside with construction adhesive and lag bolts. However, when a joist loses structural support, it has to be removed and replaced. Unless the subfloor can be removed, you access the joist through a crawl space.