How To Fix A Hole In Sub Floor

Cover that with a few thicknesses of paper toweling.

How to fix a hole in sub floor.

The first step is to put some dead wood underneath the hole so you have a way to secure the patch. Get your wood glue and apply a generous line around the edges of the opening you routed and then a bead along all for edges of your patch and press it into the opening. The i m using two pieces one on each end. I wanted to use the largest pieces of wood i could fit between the joists under the subfloor to disperse over the largest area possible any weight that will eventually be put on this patch.

Cover the entire area where the vinyl. Measure and cut plywood as needed to cover the damaged area. This exterior grade plywood is a good choice for damp or occasionally wet areas because it can withstand a moderate amount of moisture without deteriorating. Usually water is the culprit in which case the source of the water leak must be identified and fixed or you could end up with the same problem down the road.

Remove the screws when replacing a full sheet of subfloor. Birch plywood is extremely smooth with no surface voids visible grain or high sections. Sister a support board for the new plywood take a 2 x 4 or 2 x 6 2 x 8 and screw it into the exposed joist being careful that the top edge aligns with the floor joist. Remove the board and insert a new sheet in.

Before fixing the subfloor under the carpet you ll need to figure out why the subfloor became damaged in the first place. Hammer or screw the birch plywood every four inches along each seam. Measure and cut the plywood use 5 8 cdx plywood to replace the original subflooring. Repeat on the other parallel exposed joist.