Sealing Bathroom Walls Before Painting

Particularly important on new sheetrock.

Sealing bathroom walls before painting. You first need to seal new plaster to make it less absorbent and to help the topcoat adhere. Unless the surface is chalky this will help bind the surface. If the painted surface of the wall is flaking simply scrape the flaking paint from the wall. If the plaster is showing after scraping flaking paint simply coat with a 1 part pva and 5 part water mix to bare plaster then face fill with quality filler toupret interior.

If your walls are newly plastered here s what you need to know before painting over them. Primer is less expensive than paint and seals the wall. Finally sealing the painted bathroom tile protects your project from grime scuff marks and scratches. Never really sealing the wall.

Let the filler to dry then smooth down with a fine sandpaper. Without primer the wall will tend to absorb coat after coat of paint. Clean the gaps with sugar soap before you fill as any dust could stop the filler sticking to the wall. Previously painted walls do not usually require a primer but kitchen and bathroom surfaces have been exposed to high humidity which may cause the next coating to cover unevenly.

6 apply the primer and sealer with a paint roller in a v shaped pattern. Do prepare your work area before caulking the bathroom. Take your flexible filling knife and push filler into the gap until smooth with the wall. Definitely use a primer before painting new sheetrock and if you don t use a paint and primer in one.