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Re: Oozing polyurethane floor finish

From: info@builderswebsource.com
Category: Flooring
Remote Name: 63.198.181.43
Date: 05 Mar 2001
Time: 10:28 PM

Comments

I'm puzzled by a sudden oozing of the polycrylic finish. One the resin has dried, it should form a hard, clear surface. One thought is that the boards you replaced had not reached moisture equilibrium relative to the existing boards. As a result, when you installed them, they fit snugly at first. As they dried, they shrank slightly, exposing cracks and rough edges. Generally, new flooring should be stored in the room where it will be installed for approximately 2 weeks prior to installation. It's also possible that the existing flooring does not have a vapor barrier between the Oak and the subfloor. This could be impacting moisture levels throughout the year.

The Minwax website has some good tips and FAQs on polycrylic finishing techniques. See:

http://www.minwax.com/produse/clear/pucfpc1.htm

and

http://www.minwax.com/produse/clear/pucfpc2.htm

To avoid subsequent grain raising, which could lead to the effect you experienced, Minwax also recommends the following procedure:

"Do what the professional woodworkers have been doing for centuries--before your final sanding, moisten the wood with a rag or sponge dipped in water. Allow the wood to dry, then sand off the raised grain with #220 sandpaper. After wiping off the dust, you are ready to apply Minwax® Polycrylic® Protective Finish."

We hope these tips help.

Builders Websource

 

 

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