How To Fix Plywood Floor Joints

If needed cut the backerboard to fit in small spaces or around obstructions.

How to fix plywood floor joints. Birch plywood is extremely smooth with no surface voids visible grain or high sections. Lay the second sheet of plywood tightly butting the edges of the two sheets together to create a butt join. I made this video to show the process i use to cut out and repair and broken damaged or weak section of plywood subfloor. If you have sagging cracked or twisted joists which can happen in older houses this project will provide the extra support the floor needs.

If you have any questions or maybe. Plan so the joints in the backerboard won t line up with the joints in the subfloor. Plywood firmly fastened to the undersides of joists helps prevent this side to side bending and stiffens the floor. For this fix to work well the upper edges of the joists must be solidly fastened to the subfloor above.

Squeaks in a floor usually mean that the subfloor has loosened from the joists. Repairing flooring vinyl wood or tile costs 347 on average or between 188 and 512 because pros need to go through this layer to get to the structural elements of subfloors and joists expect to pay far more for structural repairs. Do a dry run and lay the backerboard down to fully cover the area you plan to tile. Fix the plywood to the floorboards with ring shank nails every 15 mm 6in around the edge of the board.

A layer of 3 4 in. I thought i d ask the collective wisdom on here before doing that. The plywood is nailed down not screwed and one idea is to put some screws in and see if that tightens it up. This article provides step by step instructions and pictures on how to make structural repairs by sistering floor joists alongside weak joists.

Leave a gap the size of a credit card between the two sheets. Leveling compound comes in two basic formulations. The backerboard should completely cover the subfloor joints. I m wondering how best to fix the problem i m no expert but even i can tell that hardwood flooring will not sit nicely across that 1 8 height difference.