Some manufacturers of water-based polyurethanesdo not require sanding between coats, as long as you observe specific recoating times. Most manufacturers of oil-based polyurethanes do require sanding between coats. However, aside from the technical aspects, you should consider sanding between coats for aesthetic reasons.
People also ask
Do you need to sand after applying polyurethane?
When not done correctly, you will need to sand and recoat the entire surface. If you must sand the final coat, the wet sanding method is safer and gives a smoother or glass-like finish on the wood. The best solution is to ensure you get the polyurethane application right the first time, so you don鈥檛 have to go through this trouble.
How many coats of polyurethane do I need to sand wood?
Before you start either of these, make sure there are enough coats of polyurethane on the surface. If you have only one coat, any type of sanding method will get to the bare wood, and you鈥檒l have to apply another coat. How Many Coats of Polyurethane?
Should Minwax polyurethane be sanded between coats?
Minwax Polyurethane should be sanded between coats. Sand with 320 grit sandpaper to get rid of any fine particles of dust that have settled on it while it was still wet. Sanding in this case not only allows for a smoother finish but can also help abrade the surface and increase inter-coat adhesion.
Do you have to sand down before recoating?
Before recoating, the instructions advise you to let your coats dry for at least two hours, but less than 24 hours. If you observe this drying time, no sanding is required. However, if you miss the 24-hour window, you must lightly sand the coat with 220 grit sandpaper before applying the next coat.