Sometimes the humidity creates an irritating cloudy look in your topcoat of polyurethane. Polyurethane can even help prevent the color of the paint from fading as a result of being exposed to the sun.
Or you ll have to invest extra time between each coating of polyurethane.
Should i polyurethane over stain. You ll introduce air bubbles into the mixture that ll end up as bumps on the finished surface. On the downside water based poly tends to raise the grain of the wood is susceptible to watermarks and can be temperamental when applied over some wood stains. Think of gel stain as a type of opaque paint.
If you really want to change the color without stripping gel stain can do it. Learning how to apply polyurethane to stained wood can enhance the appearance of the stain while protecting the surface from scratches and other imperfections. It is not recommended and should really be avoided if possible as it will peel and blister.
Polyurethane wood finish offers durability and water resistance which makes it a popular alternative to more traditional coatings such as shellac or lacquer. If the stain is self sealing you can skip this step. So when you decide to apply the stain let it be on a day with less humidity.
Check the can for this information. It won t penetrate like stain so you won t get the same grain patterns. Although polyurethane is mainly used on stained wood due to the durable finish it provides some homeowners use it over paint.
Can you apply a clear sealer or polyurethane over a deck stain. Two coats are sufficient for polyurethane but you can add one or two more if desired for more depth. For the smoothest finish wipe the surface with a sticky tack cloth before adding another coat.
Polyurethane and stain contain volatile organic compounds that can be hazardous to your health. Exploded tip synthetic brushes with each strand divided into multiple strands at the tip may introduce air bubbles into the finish. Oil based polyurethane typically adds a warm amber glow to wood particularly to lighter wood species such as white oak maple or birch.
Never shake a can of polyurethane. Color is another differentiator. It can create some significant problems or solutions in the process.
Use a good quality natural bristle brush to apply oil based polyurethane. It s not a common practice but you can apply stain if it s gel stain over polyurethane.