Naphtha evaporates much faster than mineral spirits or turpentine.
Thinning polyurethane for floors.
Do not use a belt or drum type sander for sanding between coats.
Start out with 36 grit paper then 60 then 100 grit.
You can read more about them in this article.
You may want to thin your polyurethane for a variety of reasons.
If you are sanding a floor for a clear finish some call it a natural finish you must sand the floor at least 3 times.
But lets start from the beginning.
Apply a thin coat of minwax fast drying polyurethane using a high quality natural or foam brush.
For floor projects use a square buff orbital or disk type sander with 220 grit sandpaper or the equivalent grit pad or screen specifically designed for sanding between coats.
Polyurethane is a common modern wood finish that can be purchased with either an oil or a water base.
The first is evaporation of the thinner.
Polyurethane decorates and protects your floors at the same time.
Thin your oil based polyurethane with two parts polyurethane and one part mineral spirits.
So the logic behind this myth which is fairly new is that the finish will dry faster if the thinner evaporates faster.
Check the manufacturer s recommendations on the product label.
Some stains are self sealing.
Be sure to catch any runs.
But like all varnishes polyurethane dries in two steps.
Thinning can help the finish flow into fine details and nooks and crannies with less buildup.
Pour the products into a glass jar and gently stir the mixture with a flat stir stick.
You may choose to thin oil based polyurethanes with mineral spirits or naphtha but for most applications this is not necessary.
There are two main forms of polyurethane oil based and water borne poly.
If you are going to use a polyurethane finish then go for the best polyurethane for floors.
Buy on amazon.
The brand of polyurethane will have a huge impact on how your floors look as well as how long they last.
Brush the sealer on with a natural bristle brush using long even strokes.
If you are going to use a polyurethane finish then go for the best polyurethane for floors.
Dura seal 1g satin 310 polyurethane.
Applying oil based polyurethane.
Thinning with naphtha makes polyurethane dry faster.
If the floor is to be stained you must skip less grits and go with 36 60 80 then 100 or 120.