A polyurethane finish or varnish is a durable coating that protects a wooden surface which means you can t paint directly over it or your paint won t adhere to it.
Exterior polyurethane over paint.
But with the right materials and a little bit of elbow grease you can paint over the polyurethane.
For those individuals who don t know specifically what polyurethane is it s a synthetic product that works in the same way as paint rubber metal wood and other materials do.
You can apply polyurethane over any type of paint as long as it s clean and has been properly prepared.
However oil based polyurethane tends to yellow as it ages whereas water based varieties stay transparent.
Applying polyurethane over a painted surface will give it an impeccably smooth finish.
You can manufacture it to be hard like wood spongy like upholstery.
Curing times vary according to paint type and atmospheric conditions but a safe average is about a week.
Preparation and application procedure if you re coating fresh paint allow the paint to cure first.
Furthermore polyurethane application is a very simple procedure that virtually any household handyman is capable of tackling provided of course that they re armed with the proper set of tools and a helpful set of instructions.
Start by cleaning the surface and filling in any cracks or imperfections.
Polyurethane can be oil or water based and you can use either kind over latex paint.
Well i much prefer a true satin or matte finish but having gone through this before i knew exactly what i needed to do.
Polyurethane is a very useful product with multiple uses.
It was fine but i wasn t impressed enough with it to use it again.