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da_man 04-07-2012 06:08 PM

little lumps in hard wood with polyurethane
I did a small amount of red oak flooring myself. Came out good. I sanded it flat. When I did the first coat of polyurethane I felt some grainy things in it. I re-sanded it smooth with 150 grit sand paper, vacuumed it the best I could. It felt really smooth to the touch. I did a second coat and applied it lightly with the lamb wool applicator. Its still drying, but it looks like it will have same tiny lumps in it.

What would I be doing to cause this? Also is there a quick way to buff it smooth without doing another coat of polyurethane because I really don't like the smell.

Millertyme 04-07-2012 06:54 PM

the first coat usually comes out a little rough. With it being a floor you are going to want to do at least 3 coats of poly. Sanding lightly between is common practice but is not always required. You could have had some dust in the air still kicking around when you applied the second coat. Make sure your brush is clean. It could also be air bubbles in the poly. If it is you can use a thinned coat to help rid them. One you get a few coats on the floor and it is cured completely you can use a rubbing compound to buff the floor. But be careful not to make it too is a floor.

Jackofall1 04-07-2012 06:56 PM

You need to use tack rags before you apply the next coat.

I know the smell is wonderful isn't it, but the more coats the longer it lasts, generally 3-4 coats is required.


Chetco 04-08-2012 11:20 AM

May need to strain / filter the poly U .

RhodesHardwood 04-09-2012 01:11 PM

The only option is to buff the floor with a 220 grit and then recoat. As the other guy mentioned this will addd more protection.

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