Plywood consists of thin layers of softwood laminated together using a strong, adhesive-like urea formaldehyde or polyurethane. While the adhesive is waterproof, the wooden layers aren’t, and they are able to swell or deform when exposed to moisture. The adhesive bonds weakens if the wood stays wet for a protracted interval, and the layers can finally separate. This is a frequent phenomenon when plywood is used for basement walls, exterior siding and subfloors. Once plywood has become moist, you need to encourage the water which has soaked into the wood fibers to evaporate to allow it to be dry again.
Stack loose sheets of wet plywood in a dry place with plenty of flow. Place blocks between the sheets so that air can circulate across both faces of every sheet, and makes sure all of the edges are vulnerable.
Expose the faces of sheets which are installed in a floor, ceiling or wall and can’t be removed. Wipe any standing water using a sponge, and circulate air around the moist areas with a fan.
Eliminate wet sheets of plywood from wherever they’re installed, if at all possible, which means you can circulate air across the borders. The advantages are the parts of the sheets which are most vulnerable to water damage and might stay moist even if both faces dry out.
Boost the surrounding temperature to speed drying. If the sheets are in closed area, raise the room heat or place a mobile heater nearby. You can also lower the ambient humidity by running a dehumidifier. If you’re drying sheets outside, stack them in sunlight.