Filed Under Replacing Wood Sub Floors
Before replacing all or part of a wood sub floor you must first remove the old wood sub floor material. If you aren’t already familiar with the process, you should first read and follow the directions in the article, Removing Wood Sub Floors. Once this has been accomplished you may move on to actually replacing the wood sub floor.
Before replacing your wood sub floors you must be certain the floor joists are sound, straight, level and have a smooth top surface. If not these issues will have to be addressed before you actually begin the reinstallation procedure on the wood sub floors themselves.
After establishing that the floor joists are sound, straight and level you can begin actually replacing the wood sub floors. You will first need to nail lengths of wood block, preferably of two inch thick lumber, to the side of the floor joist along the edge of the replacement area at the same level as the top of the joist. These blocks will provide a ledge for the replacement wood sub floor material to rest on.
No matter what type of wood dub floor material you are replacing, you should go back with plywood of the proper thickness to match the old wood sub floor. If you cannot match the height exactly, choose the thickest plywood you can use without being higher than the old wood sub flooring. You will then shim along the floor joists with roofing felt to bring the replacement wood sub floor up to the same height as the existing sub floor.
After all shimming and leveling has been accomplished and the replacement piece of wood sub floor has been cut to precisely match the hole, adhesive should be liberally applied to the tops of the floor joists and the edges of the replacement piece of wood sub floor before attaching it to the floor joists and blocks with high quality deck screws every six to eight inches especially along the edges.
Replacing areas of, or even entire, wood sub floors is a big job but can be completed with confidence if you just take your time and consider each move before you make it. If, however, you start to feel overwhelmed or find more serious problems than you had anticipated, we strongly recommend at least consulting with a licensed contractor to assess your given situation.
As always, remember to take the time to familiarize yourself with all tools and equipment before beginning as well as the safety procedures necessary to their operation.