Why does the wall paint and plaster blister and peel right next to a door or balcony door, and how is it fixed?

The strip of wall right beside a door frame — whether a balcony door, front entrance door or bathroom door — is one of the most common spots for paint to lift in large flakesPeeling paintWhen paint loses its grip and lifts off in flakes or sheets. It is almost always a sign of a problem underneath, usually damp or poor preparation.. Moisture creeping in around the threshold or frame meets the constant vibration of the door opening and closing.

Painting straight over flaking edges will fail almost immediately. On this wall beside the door, all lifted paint was scraped back with a broad knife until only firmly bonded plasterRender (plaster)A layer of mortar (sand, cement or lime, and water) spread over brick or concrete to give a wall a straight, sound surface ready for paint or tiles. remained.

The patch was then filled to feather out the step between the bare plaster and the surrounding paint, sandedSandingSmoothing a surface with sandpaper or a power sander to remove bumps, loose old paint or gloss, so the new paint or varnish grips well and comes out smooth. smooth, primedPrimerThe thin first coat that goes on before the main material. It binds dust, seals the pores and helps paint or waterproofing stick firmly. and painted.