It is fairly simple to spot drywall that is damaged by water. The walls will be cracked or discolored, and there may be obvious signs of drywall tape hanging off the wall. To the touch, the wall may feel swollen and/or spongy. Depending on the extent of the damage and your comfort with do-it-yourself projects, you may choose to repair the drywall yourself.
For smaller damage that has been done only to the exterior of the drywall due to flooding or another external reason, you may only have to sand down the surface and patch the area. After sanding, cover the affected area with drywall tape and use a putty knife to smooth a lightweight drywall compound over the tape. Let the compound dry, sand the area down until it is smooth, and then re-paint the surface.
If water is leaking from behind the drywall, you will want to Read More…

