Patching Sheetrock So the Repair Does Not Show Through the Paint

Almost every house has a patched spot you can see from across the room. A raised square where a hole was filled, a dull halo around a repair, or a crack that keeps coming back. These are all fixable, and they all come down to the same few steps. This is how sheetrock repair is done when it needs to disappear.

Why patches show

There are three usual causes. The patch is raised above the wall because compound was piled on in one thick coat. The edges are hard because the compound was not spread wide enough. Or the patch was painted without primer, so it absorbs paint differently and dries to a different sheen.

Feather it wide

A small hole needs a patch several times its size. Compound goes on in thin coats, each spread a little wider than the last, with the edges feathered out to nothing. The wider and thinner the edges, the less your eye can find them.

Sand flat, then check with a light

Each coat is sanded once dry. Holding a work light flat against the wall shows any ridge or dip that is invisible under room lighting. If the light catches it, so will the afternoon sun through your window.

Prime before you paint

This is the step that gets skipped. Bare joint compound is far more porous than painted drywall. Without primer, the patch soaks up the paint and dries flatter than the wall around it. A coat of primer evens that out.

Paint the whole wall

Even with primer, touching up just the patch can leave a slight difference in sheen. Painting the wall from corner to corner gives the cleanest result. That is why repairs are usually done as part of an interior painting job.

Have a patch that keeps showing? Get a free estimate on sheetrock repair in Knoxville.