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Old 05-12-2011, 01:37 PM   #21
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I don't think the primer is required but this is straight from the manufacturer...
EternaPrime is used to prepare surfaces for application of all EternaBond tapes. Recommended uses include, but are not limited to dirty surfaces which are difficult to clean completely (tar and gravel), potentially loose surfaces (mortar), porous surfaces (wood or concrete), and anytime the EternaBond tape is applied at temperatures below 40F ambient.

So it can only help but if you have a clean surface it may not be necessary. (that's how i read it)
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Old 05-12-2011, 04:26 PM   #22
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The instructions on my rolls stated that if you were going to install it in cold temps (4*Celcius) that you must use their primer.
Otherwise, acetone works just fine and seems to be the cleaner that most folks use.

Mike
BTW, nevermind with Home Hardware. So simple to order from the BestMaterials link I showed.
My two rolls of 4 X 50 ended up at $124CAN with shipping and taxes for crossing the border.
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Old 05-12-2011, 04:35 PM   #23
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Quote:
Originally Posted by mTn_biKer65 View Post
Is this the consensus that you MUST use the primer spray. All I've read so far says make sure it's clean using a non-silicone cleaner. I'd planned on using acetone but hadn't planned on getting the primer spray

p.s. Back to my previous post I checked my local Home Hardware here in Canada and they were familiar with the name Eternabond but didn't have it in stock and no offer was made to order it. Might be hit and miss because it is listed on the website.


I used Acetone, just wiped and let dry and apply, stuck like sh@$ to a blanket.

As for Home Hardware, the local store here carries 4' pieces only. No rolls.
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Old 05-12-2011, 05:09 PM   #24
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I bought two cans of primer and initially tried to stretch the first can to do the entire job. I had some "failure to adhere" issues with the last seam because I did not spray the entire "stick area" completely. Never enough time (materials) to do it right; plenty to do it over.
I would never attempt this again without plenty of Primer on hand.
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Old 05-18-2011, 11:04 AM   #25
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I did my entire roof, windows and 2 slides with Eternabond. Bought 3 rolls of 4" tape; (cut the 4" to 2" for windows) and tool for $120 inc shipping and still have a little left over from the 27' motorhome job. Rig was brand new so roof/slides in optimal condition for application of material.

Had one section "come up" in heavy winds through New Mexico and will have to address with the dealer on return.

In general, I am happy with Eternabond. The only thing I don't like is the appearance around windows; the goop that makes the bond is gray color and squeezes out the edges resulting in a poor appearance. However, no leaks (and no window drafts) are satisfactory tradeoffs.
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Old 05-06-2013, 10:41 AM   #26
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I was wondering how your dealings with Best Materials was?
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Old 05-06-2013, 12:33 PM   #27
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Quote:
Originally Posted by mapacam06 View Post
I was wondering how your dealings with Best Materials was?
If you're posting for puckdad because he linked to Best Materials, then your best bet is to send him a PM. Looks like he posted awhile ago.

Good luck!
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Old 05-12-2013, 03:54 PM   #28
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Are petroleum distillates a no no for the rubber roof

I thought you couldn't use petroleum distillates(acetone) on the rubber roof. It degrades it according to the manufacturer of thst rubber roof.
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Old 05-12-2013, 04:23 PM   #29
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Quote:
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I thought you couldn't use petroleum distillates(acetone) on the rubber roof. It degrades it according to the manufacturer of thst rubber roof.
You need to prep the Dicor "to make it sticky" and clean the oxidized rubber from the roof material. Eternabond Primer is what is recommended by the manufacturer of the EB tape; however an Acetone damp rag works just as well. Just not too much and it evaporates immediately.

EternaPrime Spray Primer, 14 oz. Can

This is from the Best Materials web site FAQ:

Subject: Best EPDM Seam Construction

Q: I am re-doing my RV roof with white epdm. I will have a seam across it and I am having a hard time understanding which seam seal method I should use. Can you help me understand this?

1) 3" or 4" seam tape, with primer?

2) 4" double stick 60mil no primer ($57.95 for 50')?

3) Splice adhesive ($60.00 for 1 quart)

A: The best practice is to create a double lap-seam. It will out-live the roof. Create as follows:

1. clean, overlapping EPDM pieces, in preparation for 3" wide Doublestick. If you have an OLD roof surface, prime the surfaces first. New EPDM can be generally just cleaned well.

Insurance: Just prime both surfaces before applying Doublestick seam material.

2. apply use 3" Eternabond Doublestick Seam tape (Doublesided sticky tape sealant), and roll well.
3. Then cover the exposed seam edge with a piece of COVERSTIP TAPE (6" wide, EPDM faced peel/stick tape). PRIOR to applying this, clean surface and prime. Only prime in areas where the coverstrip will be exposed.

http://www.bestmaterials.com/detail.aspx?ID=16016

Now you have a double sealed seam, which will take foot traffic, and outlast the rest of the roof.
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Old 05-12-2013, 05:31 PM   #30
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Originally Posted by mapacam06 View Post
I was wondering how your dealings with Best Materials was?
Great people and price.
Why do you ask?
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