How To Straighten A Warped Sheet Of Plywood

Using a sponge that s slightly damp moisten the concave side of each piece.

How to straighten a warped sheet of plywood.

Wood warps from exposure to moisture which curves plywood or boards for sub flooring or framing a home. I use a sponge or sprayer to wet the concave side of the plywood hot water works best. Plywood isn t the only thing that can become warped even after a project is finished. As humidity or moisture from rain water falls onto the wood the lumber absorbs the liquid causing it to expand and bend.

I just kept returning it to my distributor but the problem was not resolved until the distributor stopped buying from one particular mill. The concave part needs to face downwards. Using warped planks in framing a home or in a sub floor may result in problems as floors and walls begin to buckle. However last year i kept getting 3 4 maple both unfinished and pre finished that would warp 1 over 4.

For your convenience here are some ideas on how to fix other common warped wood items. In the future you may want to try oak mdf medium density fiberboard instead of plywood. How to fix other warped wood items. One downside to plywood is its tendency to cup.

This process will take several hours but once it is finished the plywood will be rejuvenated and ready to use for your project. Now keep your wrapped wood on a flat surface that also will be able to bear the temperature of your iron. I think we all contend with a certain amount of warped plywood sheets due to humidity inconsistencies. The bowing that occurs is actually the plywood shrinking.

How to fix warped doors. Then i lay the sheet moist side down on a shop floor or a driveway. Set your iron to the highest temperature and let it heat properly for about 2 6. Plywood pieces can warp if they have been improperly stored or exposed to moisture.

You can flatten them again with hot water and a warm environment. Wrap your warped wood in two large moist towels and make sure the warped parts are properly covered. At the same time moisture is being absorbed into the concave side. It s much more likely to stay flat.