Use mesh tape and joint compound for larger holes and cracks

For cracks wider than 1/8 inch or holes larger than a nail hole (up to about 2-3 inches), apply self-adhesive fiberglass mesh tape over the damaged area, then skim coat over the tape with joint compound. Apply a first coat of compound, pressing it through the mesh to embed it against the wall. Let it dry, then apply a second thin coat extending 2-3 inches beyond the first to feather the edges. Sand smooth after drying.

Why It Works

Mesh tape bridges the gap of a crack or hole and provides tensile reinforcement within the joint compound layer. Without tape, compound filling a wide crack will shrink and re-crack because it has nothing to span the gap. The mesh distributes stress across a wider area, creating a patch that resists re-cracking from building movement or vibration. This is the same technique professional drywall finishers use on seams.

Tips

• Self-adhesive fiberglass mesh tape is easier for beginners than paper tape because it sticks in place while you apply compound
• Use setting-type compound (Easy Sand) for the first coat embedding the tape -- it is stronger and shrinks less than pre-mixed
• Pre-mixed all-purpose joint compound works well for the second and third skim coats where easy sanding matters more than strength
• Feather each coat wider than the previous one (first coat 4 inches wide, second coat 6-8 inches wide) to create an invisible transition
• For cracks that recur seasonally, apply the tape and compound, then skim a thin layer of elastomeric paint over the area for additional flexibility
• Sand between coats with 150-grit, then final-sand with 220-grit
• Cost: a roll of mesh tape ($4-6) and a quart of compound ($5-8) handles many repairs
• Common mistake: applying compound too thick in one coat -- thick coats shrink, crack, and take forever to dry; two thin coats always beat one thick one