How to repair drywall before painting
The essential steps for achieving an even surface before paint is applied.
Start by assessing the damage
Small nail holes, hairline cracks and surface marks do not require the same repair as a deep hole or damaged section of drywall.
Check for moisture before starting. A leak must be corrected before drywall is repaired or painted.
Prepare and fill the surface
- Remove loose material and dust from the area
- Apply joint compound in thin coats
- Allow every coat to dry completely
- Feather each coat farther out so the repair blends into the wall
Sand without damaging the wall
Once the compound is dry, sand gently until the transition cannot be felt. Side lighting makes high and low spots easier to find.
Avoid over-sanding. Exposing the drywall paper creates another damaged area that must be sealed and repaired.
Prime before painting
Joint compound is more porous than the surrounding paint. Primer seals the repair and prevents a visible difference in sheen after the finish coat.
Careful preparation is what separates a visible patch from a wall that looks even and complete.