How To Straighten A Warped Sheet Of Plywood

The concave part needs to face downwards.

How to straighten a warped sheet of plywood.

I just kept returning it to my distributor but the problem was not resolved until the distributor stopped buying from one particular mill. 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. One downside to plywood is its tendency to cup.

You can flatten them again with hot water and a warm environment. Now the sun or the warm interior air helps to dry out the convex humped side of the plywood. Doors not just cabinet doors can become warped as well especially homemade doors made of plywood. At the same time moisture is being absorbed into the concave side.

Using a sponge that s slightly damp moisten the concave side of each piece. This process will take several hours but once it is finished the plywood will be rejuvenated and ready to use for your project. Wrap your warped wood in two large moist towels and make sure the warped parts are properly covered. 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. Plywood isn t the only thing that can become warped even after a project is finished. For your convenience here are some ideas on how to fix other common warped wood items.

I use a sponge or sprayer to wet the concave side of the plywood hot water works best. However last year i kept getting 3 4 maple both unfinished and pre finished that would warp 1 over 4. It s much more likely to stay flat. In the future you may want to try oak mdf medium density fiberboard instead of plywood.

Give the plywood some time and see if it flattens itself. Wood warps from exposure to moisture which curves plywood or boards for sub flooring or framing a home. As humidity or moisture from rain water falls onto the wood the lumber absorbs the liquid causing it to expand and bend. Then i lay the sheet moist side down on a shop floor or a driveway.