What is the purpose of feathering edges in crack repair?

• A. To blend patch with surrounding surface
• B. To harden patch only
• C. To create ridges
• D. To shrink more

Answer: (A)

Feathering edges means thinning out the patch toward the surrounding surface so there’s a gradual slope instead of a hard, abrupt boundary. This creates a smooth transition from the repair to the normal wall, allowing the patch to blend with the surrounding texture and finish. When you apply finish coats, the tapered edge accepts them evenly, so the repair becomes virtually invisible and the surface looks uniform. A soft edge also improves bonding at the interface and reduces the chance of new cracks starting at a sharp edge. This is why feathering is essential for a seamless, durable crack repair.