All the negatives of foam brushes really don't apply when staining. The stain gets wiped off, so air bubbles aren't an issue. Stain is really thin, so it's not much work for the brush to spread, and therefore the brush stays intact for a longer period of time.
Foam brushes are designed to absorb and hold all types of paints, stains, and urethanes. They give a smooth finish and are priced to throw away after the job is done. Use them on furniture, cabinetry, and trim.
During paint installation, improper foaming brushes can irritate the paint in a critical condition.
Oil-based polyurethane brings out the natural beauty of wood grain with a high-contrast, glossy appearance. Apply it with a natural bristle brush for the best results, though a foam brush is appropriate for smaller projects.
Before using a paint brush, it should be pre-wetted with water if a latex paint is being used, or mineral spirits for an oil base paint. The excess liquid should then be removed, leaving the brush damp but not wet. This step will help the paint transfer better to the surface, and make it easier to apply.
Foam brushes are usually considered disposable, and therefore a great option when working with oil-based paints, stains, and finishes. Bristle paint brushes are more expensive, but leave a smoother finish, and handle tight corners better than foam brushes.
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.
In self-serve car wash bays, most car wash owners rely on foaming brushes to cost effectively remove surface dirt, film, grit, and debris from customers' cars and keep them coming back. This is particularly important when soapy water alone will not do the job.
Use a Foam Brush for Corners and Large Projects
For corners, nooks, crevices, or any other hard to reach spots, use a foam brush to apply the stain first. Then, wipe off the excess with a lint free rag. Foam brushes are great for nooks and crannies because of their angled tips.
4th Genesis. When you take your car to a manual car wash, do not use the built-in foam brush. It will definitely leave scratches on your clear-coat, especially with Siberian Ice.
Go with the grain. In any painting project, trim included, paint with the grain of your wood rather than across it. This ensures the smoothest finish. Cut in first, and then paint the middle.
The best paint brush for a smooth finish is the Purdy Nylox Glide brush. It has super soft bristles that do not leave brush marks. It's perfect to use with latex paint. Projects that are perfect for this paint brush include painting cabinets, trim, furniture and doors.
Foam brushes can be used with water- or oil-based (solvent) finishes. If you clean them immediately after use -- the real key to effective cleaning of any painting tool -- foam brushes can be used again with water-based finishes.
Let it soak between coats.
When you're done with the brush, rinse it a couple of times in used mineral spirits, then pure mineral spirits, removing the bulk of the solvent on newspaper each time.
For best results, apply at least two coats of polyurethane. When working on floors, tables, chairs, and furniture that will be used often, apply at least three coats. If you are using water-based polyurethane, you can apply up to four or five coats on floors and sheds.
Yes, you can apply more polyurethane with a foam roller, microfiber, and mohair. The foam works well with oil-based poly. However, don't use a foam roller when applying water-based polyurethane.
A foam brush can be used with a water-based (solvent) finish or an oil-based (solvent) finish. Foam brushes can be used again with water-based finishes after they have been cleaned immediately following use — the key to effective cleaning of any painting tool.
The Wooster Shortcut Angle Sash brush could be considered the best paint brush for cutting in ceilings. It is made using a short, flexible handle that makes it easier to paint edges and corners. The nylon-polyester bristles also help create a quality finish.
A foam brush simplifies the painting process and is disposable. This brush readily absorbs paint, and its sharply molded corners give you better precision when painting the corners and paneled architectural features of the cupboard.