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Old 11-14-2011, 07:13 PM   #1
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Liquid Roof...stains

9 months since I put liquid roof product on went on easy and still no leaks..but looks horrible...any of you guys use this?? looks like mildew...company says no....
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Old 11-14-2011, 07:29 PM   #2
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Looks like maybe mold or the black layer is showing through the EPDM roof material which occurs when the white layer wears off. What was the companies explanation, if any?
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Old 11-15-2011, 06:44 AM   #3
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I just emailed the pics to Liquid Roof...wait and see?? I put on according to their instructions..?? I will keep you posted..
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Old 11-15-2011, 08:46 AM   #4
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I have some of that on my factory roof, but not quite as bad. I assumed too that is was a light layer of mildew. Most of it comes off with a little scrubbing, but it does take some work and it leaves a little bit of stain. Will be curious what you hear and what cleaning products work best on it.
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Old 11-15-2011, 09:08 AM   #5
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My buddy did that to his roof ... same results....
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Old 11-15-2011, 10:35 AM   #6
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Thanks for bringing this to our attention. It doesn't look good and I suspect that the it needs an anti fungal product added to the mix or a pre clean step that would avoid this. I know that Dicor only recommends a product called 303 if I remember correctly. Some googling on Dicor should give some results.
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Old 11-15-2011, 01:17 PM   #7
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Thanks for the input guys...I am in conversation with the manufacture right now...they want me to bleach my roof...?? I have new awnings that I am not getting bleach anywhere near them....I will keep you posted...
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Old 11-15-2011, 06:30 PM   #8
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Originally Posted by nealtrombley View Post
Thanks for the input guys...I am in conversation with the manufacture right now...they want me to bleach my roof...?? I have new awnings that I am not getting bleach anywhere near them....I will keep you posted...
Neil,

If it were my roof, I would leave well enough alone just short of a good wash job.

What you are experiencing is common, can become more visible as any TT ages, and IMO is really more of a cosmetic issue (not the TPO or EPDM material properties being compromised). The roof attracts a lot of stuff (leaves, pollutants, etc.) that can cause staining when mixed with moisture (rain, dew, snow, etc.) and allowed to dry.., thus building up over time.

A spring and fall roof washing with an application of a good UV protectant (303 Aerospace Protectant) is the best means of minimizing the black spots over time. http://www.303products.com/shop303/i...protectant.cfm

Bob
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Old 11-15-2011, 07:00 PM   #9
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It does appear to just be stained or mold. On my last TT though which I bought used the second layer of the roof material which is black was showing through in spots. I think the previous owner may have sprayed something on there that the roof material did not like. It was only 7 yrs old at the time. Your trailer is 10 to 12 yrs old so the white layer of the roof could be getting thin, which is why I included that as a possibility. I have seen some old wore out EPDM roofs that were almost black, not just from stains but from the outer white layer wearing off.
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Old 11-15-2011, 08:02 PM   #10
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snip.......I have seen some old wore out EPDM roofs that were almost black, not just from stains but from the outer white layer wearing off.
Lee,

Alway a possibility.

Bob
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