How To Straighten A Warped Sheet Of Plywood

One downside to plywood is its tendency to cup.

How to straighten a warped sheet of plywood. It s much more likely to stay flat. You can flatten them again with hot water and a warm environment. Using a sponge that s slightly damp moisten the concave side of each piece. Then i lay the sheet moist side down on a shop floor or a driveway.

Wrap your warped wood in two large moist towels and make sure the warped parts are properly covered. This process will take several hours but once it is finished the plywood will be rejuvenated and ready to use for your project. The bowing that occurs is actually the plywood shrinking. As humidity or moisture from rain water falls onto the wood the lumber absorbs the liquid causing it to expand and bend.

Give the plywood some time and see if it flattens itself. For your convenience here are some ideas on how to fix other common warped wood items. How to fix other warped wood items. I just kept returning it to my distributor but the problem was not resolved until the distributor stopped buying from one particular mill.

Plywood pieces can warp if they have been improperly stored or exposed to moisture. I use a sponge or sprayer to wet the concave side of the plywood hot water works best. Now the sun or the warm interior air helps to dry out the convex humped side of the plywood. Set your iron to the highest temperature and let it heat properly for about 2 6.

Doors not just cabinet doors can become warped as well especially homemade doors made of plywood. How to fix warped doors. Now keep your wrapped wood on a flat surface that also will be able to bear the temperature of your iron. In the future you may want to try oak mdf medium density fiberboard instead of plywood.

Using warped planks in framing a home or in a sub floor may result in problems as floors and walls begin to buckle. Plywood isn t the only thing that can become warped even after a project is finished. At the same time moisture is being absorbed into the concave side. The concave part needs to face downwards.