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Old 05-21-2017, 08:44 AM   #15
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Ok, so after 40 years, 5 moho's and house and garage with steel roofs I recomend for front and rear caps, ROOFING TAPE! There are several brands out there. Etrnabond is one brand. Home Cheapo carries a foil top brand or $17 a 25foot roll that I have used in many different applications. Amazing stuff!!! It comes in different widths, I like the 6"!

USEAL USA 4 in. x 66.7 ft. NonSkid Roof Tape USEAL-8872NF4 - The Home Depot

I buy the 6" wide stuff and cut it in half for my vents and other roof stuff. I use the full 6" wide on my caps. I use this stuff on my house roof, house rentals and cars. I keep finding all kinds of uses for it. You put it right over your existing roof cap caulking!!!

Ok, HD also carries something called Tropi-Cool roof coating and caulking. Not cheap, but the very best stuff. The paint is liquid silicon. You paint it on and it self levels to a certain degree. I've seen folks seal the edge of the "tape" with caulking, you don't need to do that but I would use this stuff if I were going to do that. This is a 100% silicon roofing paint. They coat entire roofs with this stuff. It has a lifetime warranty. Getting the roofing tape back off is next to impossible. Fastest way is to cut it, so it is not a temp fix! I just did a 35 foot pace arrow with the tape and Tropi-Cool. Temp inside dropped 15 degrees from the sun. Removing silicon is best down with carb cleaner, small brass brush, chizel with dulled corners and your clawing finger nails! There may be a better way, but I have not found it yet!!!
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Old 05-21-2017, 08:58 AM   #16
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Here a few more. FB friend just did a roof similar length. New rubber. $4300. Mine, $250, don't get me wrong, it is hard work, but saved $4k. The rear cap is busted up from folds stepping on it when climbing on the roof. drilled holes at the end of each crack, caulked with the tropi-cool caulk then covered with the 6" roof tape. Pix is of the front cap. I didn't pull the silicon, just covered it with tape. In my opinion, silicon caulking is used for 2 reasons. One as a compression gasket, two to make it look pretty.
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Old 05-21-2017, 09:08 AM   #17
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Meanwhile at Fleetwood...

Techs at the Decatur, IN., technical service center told me this month silicone has essentially been banned from the REV production floor.
Geocel is the sealer of choice there for the moment. About $12 a tube.
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Old 05-21-2017, 11:42 PM   #18
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Quote:
Originally Posted by lonfu View Post
Ok, so after 40 years, 5 moho's and house and garage with steel roofs I recomend for front and rear caps, ROOFING TAPE! There are several brands out there. Etrnabond is one brand. Home Cheapo carries a foil top brand or $17 a 25foot roll that I have used in many different applications. Amazing stuff!!! It comes in different widths, I like the 6"!

USEAL USA 4 in. x 66.7 ft. NonSkid Roof Tape USEAL-8872NF4 - The Home Depot

I buy the 6" wide stuff and cut it in half for my vents and other roof stuff. I use the full 6" wide on my caps. I use this stuff on my house roof, house rentals and cars. I keep finding all kinds of uses for it. You put it right over your existing roof cap caulking!!!

Ok, HD also carries something called Tropi-Cool roof coating and caulking. Not cheap, but the very best stuff. The paint is liquid silicon. You paint it on and it self levels to a certain degree. I've seen folks seal the edge of the "tape" with caulking, you don't need to do that but I would use this stuff if I were going to do that. This is a 100% silicon roofing paint. They coat entire roofs with this stuff. It has a lifetime warranty. Getting the roofing tape back off is next to impossible. Fastest way is to cut it, so it is not a temp fix! I just did a 35 foot pace arrow with the tape and Tropi-Cool. Temp inside dropped 15 degrees from the sun. Removing silicon is best down with carb cleaner, small brass brush, chizel with dulled corners and your clawing finger nails! There may be a better way, but I have not found it yet!!!
That is a very interesting product, I've seen it in HD but I've never met anyone who used it on a RV so I've not tried it. It looks like it might not be strong enough at first glance. I'm always on the lookout for good roof products so your opinion is valuable. Your pics are nice, but where do they show that tape product? Do you have a pic of it sealing an end cap? Or I should say that I can't really tell if it's been used on that roof. Can you describe where it was used?

Thanks.
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Old 05-22-2017, 07:42 AM   #19
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That is a very interesting product, I've seen it in HD but I've never met anyone who used it on a RV so I've not tried it. It looks like it might not be strong enough at first glance. I'm always on the lookout for good roof products so your opinion is valuable. Your pics are nice, but where do they show that tape product? Do you have a pic of it sealing an end cap? Or I should say that I can't really tell if it's been used on that roof. Can you describe where it was used?

Thanks.
I don't have one of the rear cap. The whole point of the roof tape is that it is low profile and barely shows. Look at the pix with the sat dome. that is the front cap and trim. I covered the front cap seam and trim with roof tape. you can hardly see it unless you get a close up. Look closely at the shower skylight before and after pix. you can see the silicon caulking in the first pix then silver roof tape in the 2nd pix. The nice thing is after the tape is installed, I can coat it with roof coating filling in any small pin holes I might have missed. You can see that in the after pix with roof coating.
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Old 05-22-2017, 07:55 AM   #20
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Using caulking under the lip of the vent in a compression gasket to be mounted makes sense. Dumping it along the exposed edge is a waste of money. Technology has changed!!!! Clearly the "new" way is to use roofing tape. Question is???? why are manufacturer's still stuck doing the old thing when the materials are available to do it once and do it right! I can tell you, instead of a one step process, it is a 3 step process. If I were to buy new again, I would install roofing tape on all my vent seals and then coat the entire roof.
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