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Interior drywall gets holes from impact, wear, or fixture removal. Small holes need spackling compound; medium holes need patches; large holes require panel replacement. Learning to assess damage, select the right repair method, sand smooth, and paint keeps walls looking new and prevents moisture damage.
Fill a small nail hole with spackling compound, sand smooth when dry, and paint. Repair a medium-sized hole using a drywall patch kit. Observe professional drywall repair for large damage to learn what's beyond beginner skill.
Your surface preparation and painting background means you already know the end goal: a wall that looks flat, uniform, and holds paint without visible repair marks. Your hand tool experience means you're comfortable with the physical skills involved. Drywall repair is about selecting the right method for the damage size, then executing the patch so it blends invisibly into the surrounding surface.
The first step is always assessment. Damage falls into three categories based on size, and each requires a different approach. Small holes (nail holes, picture hooks, small screws — under 1/2 inch) are filled with spackling compound or lightweight joint compound using a putty knife. Apply a small amount, slightly overfill, let it dry fully (it shrinks as it dries), sand flush, and paint. Two-stage application — first coat to fill, second thin coat to feather the edges — produces cleaner results than trying to nail it in one pass.
Medium holes (1/2 inch to about 6 inches — doorknob dents, small punched-through areas) need backing. Without backing, compound has nothing to bond to and will crack or fall out. Drywall patch kits sold at hardware stores include a self-adhesive mesh patch that covers the hole and creates a surface for compound to grab. Apply two or three coats of joint compound with a wide knife (6–8 inch), feathering each coat outward beyond the patch edges — the finished area should be 8–10 inches across even if the hole is 3 inches, because gradual feathering is what makes the repair invisible. Each coat must dry completely before the next. Sand between coats with 120-grit, finish with 220-grit, and prime before painting.
Large holes (over 6 inches) require a California patch or a cut-and-replace method with real drywall backing. The California patch uses the cut piece itself as the backing — score a piece of drywall larger than the hole, snap and peel the backing paper off two edges, then slide the paper tabs behind the wall and secure them with compound. Cut-and-replace involves installing horizontal wood backing strips inside the wall cavity through the hole, screwing a cut piece of new drywall to them, and taping the seams with paper drywall tape and joint compound. Mesh tape is faster but more prone to cracking at large seams; paper tape is stronger and preferred by professionals for structural repairs.
The hardest part of drywall repair is not the patching — it is the texture matching. If your walls have a knockdown, orange peel, or smooth texture, the primed patch will look different even after painting unless you replicate the texture. Spray knockdown and orange peel texture can be purchased in aerosol cans and applied after priming, then lightly knocked down with a drywall knife before it fully dries. Smooth walls require careful sanding of every compound layer. Always prime the patched area before painting — unpainted joint compound absorbs paint differently than the surrounding painted surface, producing a flashing effect (a dull spot) even with identical paint.