Sanding Concrete Wall Before Painting

Diamond head concrete.

Sanding concrete wall before painting.

Easier to match the wall color to the floor than the opposite. It is vital for the process to be done carefully. Move the grinder up and down and back and forth across the wall. Decordezine gives the steps for sanding concrete floors along with the tools and preparation needed for the whole process.

Again wipe away any debris and allow to dry completely. Then sand horizontally along the baseboard and ceiling. Dust from floor sanding will not damage newly painted walls. My walls are solid 4 thick concrete slabs.

Damage to walls from floor sander is easier to patch and paint over than the opposite. Press the grinder to the wall and begin applying firm pressure. However there are some things to consider when painting a concrete wall. They aren t dry wall smooth but don t have an interesting pattern either instead i m left with a random scale like texture around the room with some areas worse than others.

Smoothing walls before painting is necessary for surfaces previously painted with a gloss or high gloss paint. Scuff sanding not only helps remove the old product but it gives the concrete surface a slightly rough texture. For oil based paint a medium grit sandpaper 100 to 150 grit should be used. You ll want a high shine for clear sealant and stain.

If you do end up sanding again don t forget to sweep again too. Sand any areas where the paint failed to adhere. Painting a concrete wall can spruce up an area or make it blend in with the rest of the area s décor. Sand the walls from the baseboard to the ceiling with fine grit sanding paper on a sanding pole.

Sanding a concrete floor helps level its surface and is a common practice before painting it. Don t put a lot of pressure on the sanding. Sanding walls before painting for the best results use a good quality sandpaper i like 3m s pro grade advanced sandpaper available here and a sanding block this one is the best i ve found. For previously painted water based paint sand with a fine grit sandpaper.

Scuff sanding is also the first step in preparing newly cured concrete for painting. Refinishing floors before painting walls pros. After a few minutes the concrete will begin to have a slight luster. You must choose the appropriate type of concrete paint determine if the wall is sealed from moisture and apply primer prior to painting the wall.