DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Flooring > Brown spots in my bathroom on linoleum floor Help




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Old 12-11-2013, 08:19 PM  
GBR
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I agree, Neal, on a concrete basement floor or over a crawl space, but not on linoleum or vinyl as above, at least I've never heard of it; pp.20; http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CCwQ FjAA&url=http%3A%2F%2Fwww.buildingscienceconsultin g.com%2Fpresentations%2Fdocuments%2F2012_ACI%2520B asements%2520Ueno.pdf&ei=7yipUpKsBcLfoASWiIAI&usg= AFQjCNHYSKhGok1USssiYQLG5n18RR0vdA&bvm=bv.57799294 ,d.cGU&cad=rja

Wouldn't the vinyl stop all moisture from coming through as it's impermeable (hence the spot) or does the rubber somehow mar the vinyl? A surface mark.

Gary



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Old 12-11-2013, 08:43 PM  
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It was something in the rubber of the mat, I discouvered the worning after the deed was done. I think it was armstrong "not sure". The damage was very simular to the sample in your link but you could easily see the shape of the mat. As you know, nothing is really impermeable.



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Old 12-11-2013, 08:58 PM  
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Sometimes can be caused by some rubber backed mats, some flooring manufacturers warn agains certain types of mats.
that's plasticizer migration.
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Old 12-12-2013, 04:04 PM  
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that's plasticizer migration.
Big words, might need more of an explanation.
Everytime I'm in a car dealership and see protection under the tires, I think about the bathroom floor I had to replace.
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Old 12-12-2013, 07:31 PM  
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I never heard of that either, Neal; http://www.flex-europa.com/products_plasticizer.htm

http://www.cleanitsupply.com/t-r25.aspx#.

Though it sounds like Suzy's problem is moisture saturating the subfloor from the window/wall leak, not a rubber mat. I stand corrected, semi-permeable flooring.

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Old 12-12-2013, 08:15 PM  
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It's all to tech heavy for me but the idea that moisture could get thru plywood subfloor, I think that would have to be a flood. Sub floor is considered a vapour barrier.

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Old 12-13-2013, 10:09 PM  
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It's all to tech heavy for me but the idea that moisture could get thru plywood subfloor, I think that would have to be a flood. Sub floor is considered a vapour barrier.
Water can seep through interior grade plywood.
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Old 12-13-2013, 10:15 PM  
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I think her problem is moisture true, but plasticizer migration is very common.

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Old 12-13-2013, 11:10 PM  
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Water can seep through interior grade plywood.
Plywood fooring for sub floor is exterior grade but that in itself doesn't make it waterproof but Gary's link suggested high moisture in crawl space,
If that happened I think a stain would be the least of your problems.
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Old 12-14-2013, 08:58 AM  
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Plywood fooring for sub floor is exterior grade but that in itself doesn't make it waterproof but Gary's link suggested high moisture in crawl space,
If that happened I think a stain would be the least of your problems.
Many of the new houses here use chip board for subfloors.


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