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Old 08-08-2014, 03:12 AM   #1
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EPDM-Liquid Rubber Questions

Hello:
I am purchased the liquid rubber to apply to my rubber (EPDM) roof of an older motorhome. This rubber roof is a 1990 EPDM rubber membrane roof made by Alpha Systems Inc. (Royal Crown). I am using this primer---> http://www.ebay.com/itm/271277822144?_trksid=p2059210.m2749.l2649&ssPageNa me=STRK%3AMEBIDX%3AIT I did not order any tape because I didn't think I needed any.

I have pressure washed the roof of my RV and have found a little more damage than I expected. I'm thinking that I might need the tape after all. I have attached some pictures for your inspection. I would like your expert opinion please.

First a few small rips in the EPDM, some of them have been repaired previously with silicone (see pictures #2458, #2460, #2463). Should I remove the silicone? Do these rips require tape or can I just fill it in with the primer and liquid rubber? I cleaned away the silicone around the vents with a wire brush but there is also some putty around the vents (see pictures #2451, #2452, #2453, #2459). Do I need to remove all the putty or not? It is hard and difficult to remove. Should I use the tape around these vents? Also, in the front where the aluminum cap ends and the EPDM begins is a long metal piece that has some putty on it too (see pictures #2454, #2455, #2456). Should I try to remove the putty and use tape here or can I just put the primer and then the Liquid Rubber over it without tape? Also, there is a luggage rack that is anchored with putty and is a little loose in spots (see pictures #2461, #2462). Should I use tape or put down some kind of glue or something before I coat with the liquid rubber? Also, it has some bubbles where the EPDM has folded up (see pictures #2464, #2465) I know that these folds need to be removed and the EPDM needs to be completely flat. Should I cut the EPDM with a razor blade to get it to lay flat and then use tape to cover the hole or should I just fill it in with primer and liquid rubber?

I'm starting to think that I should have ordered tape. Do you recommend that I use tape on any of these areas? I can order some if I need it but I'm just not certain if I really do. All the tape that connects the pieces of EPDM together is in good shape.


Any advice would be helpful.
Thank you
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Old 08-08-2014, 03:15 AM   #2
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EPDM Cont.

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