How To Fix A Hole In Sub Floor

Measure and cut the plywood use 5 8 cdx plywood to replace the original subflooring.

How to fix a hole in sub floor.

Remove the screws when replacing a full sheet of subfloor. Birch plywood is extremely smooth with no surface voids visible grain or high sections. Cover that with a few thicknesses of paper toweling. Repeat on the other parallel exposed joist.

Measure and cut plywood as needed to cover the damaged area. The first step is to put some dead wood underneath the hole so you have a way to secure the patch. The i m using two pieces one on each end. Cover the entire area where the vinyl.

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. Remove the board and insert a new sheet in. These boards will now support the new plywood that you re going to cut to replace the damage. 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. 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. Hammer or screw the birch plywood every four inches along each seam. 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.