Drylok is a patented product that is used to make sure that your drywall doesn't get wet in the event of a water leak. It is made from a durable, waterproof material and has a unique design that makes it easy to install. The strength of drylok lies in its ability to provide protection against water, mold, and mildew. It has an elastic polymer coating which allows it to stretch and conform to any surface without damaging the material. The product also provides protection against mold and mildew because it inhibits the growth of these organisms on the surface. Drylok can be installed on wood, concrete, brick, plasterboard, metal studs or any other surfaces that can be roughened up with sandpaper or power tools.