2007-10-12 07:52:08 · 5 answers · asked by Anonymous in Home & Garden ➔ Do It Yourself (DIY)
I disagree with all three of those guys.
Thin polyurethane with paint thinner. You should always thin the first coat of poly when you are doing new or sanded wood so it acts as a sealer.
If the poly is thick because you let air get to it, you may not be able to thin it if the solids have started to harden.
I worked in a paint distributor for ten years.
2007-10-12 08:43:25 · answer #1 · answered by captbob552 4 · 0⤊ 0⤋
You shouldn't thin polyurethane. If is old and is too thick or jelling, dispose of it and buy new.
2007-10-12 08:08:55 · answer #2 · answered by DIYpro 5 · 0⤊ 1⤋
Why do you want to thin it? Most manufacturers tell you not to because you will destroy curing properties. However, you can ususally add 10% (water for waterbased, mineral spirits for solvent) and not alter those properties, anything more will cause you trouble.
2007-10-12 08:30:11 · answer #3 · answered by Glenn B 5 · 0⤊ 1⤋
I have to go along with the DIY pro: throw it out and buy new, once it starts to thicken it's loosing it's properties, it might not set right.
2007-10-12 08:26:52 · answer #4 · answered by cowboydoc 7 · 0⤊ 1⤋
Check the label, sometimes it is turps, and other types need special thinners.
Pro painter.
2007-10-12 11:49:56 · answer #5 · answered by Anonymous · 0⤊ 0⤋