Sealing Bathroom Walls Before Painting

If your walls are newly plastered here s what you need to know before painting over them.

Sealing bathroom walls before painting.

You first need to seal new plaster to make it less absorbent and to help the topcoat adhere. Never really sealing the wall. Take your flexible filling knife and push filler into the gap until smooth with the wall. Apply low tack painter s tape to the walls at the edge of the ceiling to protect the walls from the primer and sealer.

Do prepare your work area before caulking the bathroom. Painter s tape allows you to section off the areas that you want to caulk while keeping your tiles tub and shower clean so that your. Your clear sealer urethane sealer for ceramic or porcelain or masonry sealer for natural. Finally sealing the painted bathroom tile protects your project from grime scuff marks and scratches.

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. If the painted surface of the wall is flaking simply scrape the flaking paint from the wall. Primer is less expensive than paint and seals the wall. Particularly important on new sheetrock.

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. 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. Let the filler to dry then smooth down with a fine sandpaper.