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