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DavidKulzer 10-15-2013 02:13 PM

Question about loncoin
I have a few rolls of loncoin flooring I was thinking about using in my shed. I think it's made of PVC since lacquer thinner doesn't hurt it and that stuff melts VCT. Does anyone know if I can glue it right to the 3/4 OSB subfloor or do I need to put down luan(?) first? Thanks

Jim McClain 10-20-2013 02:43 AM

You haven't checked the rolls (or the manufacturer's website) for installation instructions? Lonseal's Loncoin is not an exterior product, so if your shed doesn't have HVAC, you shouldn't install it there. If it does, then this is what Lonseal has to say about substrates:
Excerpt from Lonseal Technical Manual for Interior Flooring:"The following types of underlayment panels are unsuitable for use with Lonseal flooring: Luan, OSB, fiber-cement underlayment, gypsum fiber panel, particleboard, hardboard, and waferboard. Installations over these types of panels void the warranty."
That leaves out your OSB and luan type plywood. You can learn more about the installation of Loncoin here: Lonseal Flooring Technical Information

Best R'gards,

Jim McClain, a Floor Pro

DavidKulzer 10-20-2013 12:44 PM

I've talked to the installer we use when we have it installed at the Carmax stores. He's the one that told me to put luan over the OSB. He told me that the website and glue say that just for warranty purposes but it would be fine. I was hoping someone has tried and could verify it one way or the other.

Jim McClain 10-20-2013 01:42 PM

Sorry to burst your bubble, but the manufacturer's installation instructions, in this case, trumps all. Luan is crap underlayment for just about any flooring. Installing an interior flooring in a hostile environment (no HVAC of any kind), unless it is in a temperate climate year-round, should not be done.

If you trusted your installer, but don't have any faith in what the manufacturer's website or product literature have to say, why would you take the word of people you don't know on the Internet?

PS: I never used my customers to test my lame theories, so no, I've never tried that before.

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