Sand Bathroom Walls Before Painting

Sanding a wall before painting is part of the cleaning process.

Sand bathroom walls before painting.

For oil based paint a medium grit sandpaper 100 to 150 grit should be used. Tsp is a stronger cleaner. If not turn on the. If your bathroom has a window open it.

Wall dirt makes it difficult for paint to stick to the surface so make sure your wall is spotless before you start painting. For other small imperfections on the wall such as plaster bumps smooth them away with sandpaper. Smoothing walls before painting is necessary for surfaces previously painted with a gloss or high gloss paint. For stubborn stains try baking soda a substance that s used to clean everything from sinks to toilets.

You can always tell when an uneven surface was painted because you will see darker and lighter patches on the wall. For previously painted water based paint sand with a fine grit sandpaper. Don t sand so hard that you cut into. It takes away any bumps and impurities which would otherwise cause an uneven painted surface even if you are using the best paint sprayer for walls or a basic roller.

When painting a bathroom or kitchen wash the walls with a solution of approximately three teaspoons of laundry detergent to one gallon of water. Scrape any cracked or flaking paint with a paint scraper. Again wipe away any debris and allow to dry completely. Even careful diyers are tempted to bypass this step when the walls appear to be clean and in good shape and many do it yourselfers don t bother to clean in any way instead opting to simply slather paint over the walls.

Wear rubber gloves when using tsp or a bleach solution. No diy advice is ignored as often as the recommendation to thoroughly wash the walls before priming and painting. Alternatively dilute concentrated tsp trisodium phosphate cleaner with water as directed. Sand the walls lightly with medium grit sandpaper brush them off with a dry cloth and vacuum up all residue.

Sweep the sander side to side as you work your way from the top down.