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Pro tip: skip the pre-sanded finish on trim, I learned this the hard way
I used to swear by pre-sanded polyurethane for baseboards, but after 2 years my living room trim in Denver started peeling in patches where the humidity hits. Now I just hand-sand with 220 grit between coats of oil-based poly, and it's held up through three seasons without a single bubble. Has anyone else found pre-sanded stuff to fail over time?
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eva_rivera14d ago
hand-sanding with 220 grit between coats" - yeah, I gotta push back on this a bit. I've been using pre-sanded poly for years in my own house and never had peeling issues, but I'm in a dry climate. Denver's humidity swings are brutal, so I think the problem is more about your local weather than the product itself. Pre-sanded stuff is way more consistent than hand sanding if you ask me, especially if you're not a pro at getting even coats. Maybe try a different brand or a water-based poly next time, those handle moisture way better than oil-based in humid spots.
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hart.zara13d ago
Totally agree with you on the water-based poly recommendation! My buddy in Phoenix uses it on his window trim and it's flawless even with the AC condensation, meanwhile my oil-based stuff in Denver still gives me trouble every spring.
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