Patch and sand a condo loose drywall tape seam

Step-by-step written guide

1. Clean and prep the surface so loose paint, dust, old caulk, or damaged wall material will not weaken the repair.
2. Cut, scrape, tape, or mask the repair area to create a stable edge and protect the surrounding finish.
3. Apply compound, caulk, primer, or paint in thin controlled layers instead of trying to hide everything at once.
4. Let each layer dry fully, then sand, smooth, or tool the surface until it blends with the surrounding wall.
5. Prime and finish the full repair area, feathering edges so the repair disappears in normal room light.

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