Water-damaged drywall repair across Los Angeles

Gypsum softens when it soaks, the paper facing peels, and the back of the board becomes a surface mold likes. A stain that looks small often sits over a wall that is wet a foot higher.

Board that got wet briefly with clean water and dried fast can stay. Board that swelled or crumbles cannot. Older walls are often lath and plaster, which is repaired differently.

A flood cut is a straight horizontal cut along the bottom of a wall, usually 12 to 24 inches up, made above the highest point the moisture meter reads wet. It removes the soaked board, exposes the bottom plate and insulation, and lets the cavity dry quickly. A straight line is easier to patch cleanly than a ragged hole. After contaminated water, the flood cut is standard, because that drywall cannot be cleaned. Baseboard comes off first and usually goes back on after.

Ceiling drywall replacement is needed when a ceiling sagged, soaked through, or stayed wet long enough to stain the back. We cut back to the nearest joists so the new piece has solid framing on every edge, remove wet insulation above, and dry the joists before closing it up. Ceilings are heavier work than walls because of the overhead lifting, and they need a board rated for ceilings so it does not sag later. Light fixtures in the cut area are disconnected before we start.

Texture matching is what makes a repair disappear or stand out. Most Los Angeles homes carry orange peel, knockdown or a smooth finish, and many older rooms have a hand-troweled look. We test the texture on a scrap piece before spraying the wall, feather it past the patch edge, then prime so the new section takes paint at the same rate. A perfect patch with the wrong texture still looks like a patch, so this step gets the most time.