Floor Sanding Polyurethane

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.

Floor sanding polyurethane.

You ll get the best results from your topcoat if you remove any old paint varnish or other finishes before polyurethane application. The dust stays in the air. If you are going to use polyurethane in a large area it is advisable to sand the floor with rough sandpaper. Sand the dried and cured first coat of polyurethane no sooner than 24 hours after applying it.

Start with 120 grit sandpaper on refinished pieces and 80 grit on new wood. Because polyurethane creates a coat of polymer over the hardwood floor it will need an inter coat scratch minimum of one time during the process. If you do have to sand between coats of polyurethane on floors because you didn t get to the second coat within the required time frame then that s a bummer. While not necessary polyurethane for floors can be sanded between coats for maximum smoothness.

Refinishing sanding staining polyurethane for hardwood oak floors. That s not to say you should apply each coat thickly. Oak hardwood floors wear well and look their best when properly refinished. Start with a thick coating.

The best practice is to apply three coats of polyurethane allowing the floor to dry and lightly sanding it between coats. 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. Sucks to be you. Use a very fine grit abrasive sanding with the grain of the wood.

Don t finish on the same day you sand. A light sanding between coats is necessary only if polyurethane for floors has been allowed to dry for 12 hours or more. Just kidding but i truly do hate sanding when i don t have to. Four regular coats of urethane applied one over the other is a good starting point.

You can save thousands of dollars by adding this. Before the finishing starts i vacuum the project the workbench and the floor. Allow the finish to dry 4 6 hours before sanding. I ll reuse these sheets several times then toss them.

How many coats of polyurethane for hardwood floors. Should polyurethane for floors be sanded between coats. Some finishers offer lower estimates for two coats but your floor won t have the same level of protection and scratches will go through to the wood more easily.