Patching Plaster Cracks and Nail Pops Before Painting

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Hold a work light flat against the wall and look along it, because that is where every dent, ridge and nail pop shows before paint covers it. The patching done before interior painting in Long Beach, CA is the part that decides how a wall looks in afternoon sun, and long beach interior painting andrew h moeller covers it step by step.

Hairline cracks in plaster

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Old plaster cracks fine and often. The crack is opened slightly with a scraper to remove loose edges, brushed clean and filled with spackle or a flexible patching compound. Two thin passes beat one thick one, and each is sanded with a fine block once it dries.

Nail pops in drywall

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A nail pop is a fastener working loose and pushing a small bump through the paint. The crew drives a screw beside it, sets the old nail below the surface, and fills both heads with compound. Painting over a popped nail without that repair brings the bump back within a few months.

Dents and gouges

Deeper dents take a setting compound that shrinks little, built up in layers. Rough sanding comes first, then a feathered edge about a hand wide so the patch does not form a hill. A wide, soft edge is what keeps the repair from showing under side light.

Why flat patches flash

A patch absorbs paint differently from the wall around it. Under flat paint the difference hides, but under satin or eggshell the patch shows as a dull spot, which is called flashing. The fix is a spot of primer over every patch before the topcoat, so the wall takes the finish evenly.

Sanding and dust

Every patch is sanded smooth and the wall wiped with a damp cloth so dust does not get rolled into the finish. Dust under a roller gives the wall a sandpaper feel. Then two coats go over the whole wall, not just the repaired areas, so the sheen stays the same from corner to corner.

Checking the repair before paint

Once the primer is on, the wall is checked again in side light. Any patch that still shows a ridge or a pit gets another thin coat of compound and a light sanding. Catching it at this stage costs a few minutes, and finding it after the topcoat means repainting the whole wall.