How to Cover Up Red Spray Paint on a White Wall

Spray the red painted area with a graffiti remover to soften the spray paint, then sponge off as much of the red paint as possible. Most graffiti removal sprays are formulated as weaker versions of paint stripping solvents and are not likely to completely remove the red spray paint from a porous surface unless the remover is applied within hours after the paint was sprayed. It is possible, however, to reduce the intensity of the red paint pigment and make the primer's job easier.

Apply a high-hide primer over the red paint, using a low-priced disposable brush or roller. Select a primer that features its stain-hiding qualities prominently in the product's name or in the key features mentioned on its label. It may be necessary to apply two coats before the red spray paint is completely concealed. Allow one to two hours dry-time before applying the next coat.

Brush two coats of the original white paint over the affected area. Use a quality paint brush to avoid the appearance of brush-marks after the paint has dried. If there is no leftover paint available from the original application, scrape off some chips of the original coating that can be color matched at a paint store. There are many shades and sheens of white, and an experienced colorist will be able to mix a small batch of paint to match your original color.

Apply a clear barrier coating if there is any risk someone might spray another color of paint on your wall in the future. There are two major types of products marketed for graffiti prevention. Sacrificial coatings are clear finishes that wash away easily, taking the spray paint with it while leaving the painted wall intact. Non-sacrificial coatings present a slick surface that allows you to cleanly wipe aerosol paint marks away.