To make the paint adhere better and the finish last longer sand and clean the floor first.
How to polyurethane a painted floor.
References ask the builder.
Start with 120 grit sandpaper on refinished pieces and 80 grit on new wood.
Illustration by gregory nemec.
If you re applying polyurethane to a painted floor scuff the floor with a floor buffer and a 120 grit sanding screen.
For a smooth coating you ll want the surface to be as smooth as possible so prepare the wood by sanding it with a sanding block or orbital sander.
To keep painted floors looking pristine consider priming and painting them annually.
They provide solid protection for painted surfaces as long as the paint is clean and has had time.
They ll need a thorough cleaning before doing so.
Start by choosing a type of polyurethane oil or water based as well as a finish matte or glossy and make sure your work area is well ventilated.
You ll get the best results from your topcoat if you remove any old paint varnish or other finishes before polyurethane application.
Polyurethane is another synthetic plastic with superior protective and adhesive properties that works well as a clear coat for a painted floor.
Step 2 prep the base photo by kolin smith.
Polyurethane formulations for floors are the hardest ones available whether oil or water based.
Apply oil or water based polyurethane with a brush or spray it.
Paint the base color.
Sand and clean the floor.
Polyurethane will provide an armor of protection to your painted concrete floor but no finish is indestructible.
White walls ceilings and floors create a clean backdrop for vintage inspired decor.
Polyurethane can bring out a beautiful color in your hardwood floor in addition to protecting it from heat and scratches.
Apply a second coat or polyurethane as needed.