Drywall and Wall Repair
Repairing Drywall Cracks and Holes Before Painting
Understand how hole size, crack movement, joint failure, moisture, drying, sanding, texture, and primer affect a painted wall repair.
Identify what caused the damage
Impact holes, nail pops, failed tape joints, settlement cracks, and moisture damage are different problems. Recurring or widening cracks and soft or stained drywall may require investigation beyond cosmetic patching.
Match the repair to the opening
Small fastener holes may need a simple patching compound, while larger openings usually need backing or a drywall patch. Failed joints can require tape and joint compound rather than surface filler alone.
Dry and sand in stages
Thick patches shrink and dry slowly. Multiple controlled applications can produce a flatter repair. Sanding should feather the transition without damaging surrounding paper.
Prime to prevent flashing
Joint compound and bare drywall are porous. Appropriate primer helps equalize absorption before finish coats, reducing a visible dull or shiny patch.