Polyurethane Siding Finish

Oil based polyurethane uses similar methods.

Polyurethane siding finish.

Paint finishes must be removed if the old surface is severely peeled blistered or if cross grain checking has occurred because of excessive paint build up. Skip this step and the top can twist cup or warp. To achieve this on open grain woods oak ash walnut or mahogany for instance first fill the pores with a wood grain filler photo below. Using an acrylic latex polyurethane you can seal your tongue and groove pine paneling with a foam paint roller brush or paint pad.

With a solid wood top like this one finish both the top and the bottom surfaces even if the bottom won t show. A paint pad cuts out bubbles and allows you to spread the polyurethane evenly and quickly so it s the recommended tool. The removal of a film forming finish is also necessary if a penetrating stain or water repellent finish is to be applied to a previously painted or solid color stained surface. Start with a thick coating.

Avoid wiping the brush on the rim of the can as this may introduce air bubbles. Prepare your workpiece a glass smooth finish begins with a level even surface. A popular choice for cabinets and trim it also protects wood. Because polyurethane is a clear finish it can bring out the beauty of wood.

Apply the first coat of polyurethane. I just don t care if there are a few. Finish both sides at once. Exterior polyurethane contains polyurethane resin a flatting agent that reduces the gloss ultraviolet absorber and solvent.

To save drying time coat the bottom and then immediately flip it over to finish the top. Wood grain fillers come in different colors. Spread the varnish over the entire surface with long even strokes. Four regular coats of urethane applied one over the other is a good starting point.

Most polyurethanes rated for exterior use will be oil based. You can choose one to. That s not to say you should apply each coat thickly. Get free shipping on qualified polyurethane siding or buy online pick up in store today in the building materials department.

The first thing to understand is the need to begin with a thick polyurethane finish film to ensure that you don t buff right through to bare wood. Within 24 hours of applying the seal coat brush on a coat of finish right from the can. While any polyurethane application requires an. Most latex polyurethanes are thin and somewhat milky but will dry to a crystal clear finish.