Can You Use a Foam Brush for Polyurethane?

Yes, it is OK to use a foam brush to apply polyurethane. However, it isn't the best choice for larger projects because the foam doesn't spread the polyurethane as well as a synthetic or natural brush. Use a foam brush to apply polyurethane to smaller projects, like finishing a birdhouse.

What kind of brush is best for applying polyurethane?

The best type of brush for polyurethane is a synthetic bristle brush. Synthetic bristles are better for difficult-to-reach or tight spaces because they hold less poly than natural bristles. Since they don't absorb much water, they'll stay in shape for a long time making them the brush for poly.

Do you need a special brush for polyurethane?

These are the end types that work best for polyurethane projects: Angled bristles: Brush is cut on a slant to make applying smooth lines easier. Angled foam brush: Foam has an angled tip to assist in application. Square trim bristles: Cut in the shape of a square to help with covering large, flat areas.