HOW TO PREPARE A PREVIOUSLY PAINTED WALL OR SURFACE

Posted by Denalt.ca in PAINT VIEW MORE TIPS & INSPIRATION

The following steps will help prepare your painted surface for a new coat of paint

  1. To ensure paint adheres well, wash the entire surface with a solution of water and TSP. TSP is a degreaser used to clean surfaces before painting. Wash walls from top to bottom to prevent dirt from spreading over to a surface that has already been washed. Rinse well with clean water.
  2. Repair wall imperfections with spackling or joint compound.
  3. Sand surface with 100-grit sandpaper. Do not use finer grit sandpaper, as the surface will become smoother than the rest of the wall and allow the repair to show through.
  4. Use a synthetic fibre 63 mm (2.5”) paintbrush and a quality 10 to 15 mm roller cover for easier application and increased effectiveness of Denalt products.
  5. Edge around walls, doors and windows, then immediately use a roller to cover the remaining surface. Before using a roller, it is recommended that you rub it to remove loose fibres and moisten with water to increase paint absorbency.
  6. Under normal application conditions, 1 coat of primer and 2 coats of paint are recommended. Primer adheres to the existing paint and seals repairs made to the surface of the wall. If a paint colour is very dark, primer can be tinted the colour of the paint you are using.
  7. For best results, apply paint at recommended temperatures and relative humidity levels. The ideal temperature is between 15ºC and 25ºC (60ºF and 77ºF). The relative humidity should be between 30% and 55%.

See choosing the right paint and finish See choosing brushes and rollers See tools and materials See how to use painter’s tape See how to repair a hole in the wall