How To Fix A Hole In Sub Floor

These boards will now support the new plywood that you re going to cut to replace the damage.

How to fix a hole in sub floor.

Remove the screws when replacing a full sheet of subfloor. Insert a pry bar into the seam between boards and push down on the pry bar to lift the board. 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.

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. Before fixing the subfloor under the carpet you ll need to figure out why the subfloor became damaged in the first place. Remove the board and insert a new sheet in.

The i m using two pieces one on each end. Measure and cut plywood as needed to cover the damaged area. Cover that with a few thicknesses of paper toweling. Birch plywood is extremely smooth with no surface voids visible grain or high sections.

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. 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. Cover the patch with a sheet of cling film saran wrap or use a plastic grocery bag. Measure and cut the plywood use 5 8 cdx plywood to replace the original subflooring.