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Old 10-13-2016, 03:32 PM   #183
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Quote:
Originally Posted by ROBERT CROSS View Post
3M 5200 quick cure a great bonding & sealant. Used it on the replacement skylight, strong bond but stays pliable.

Regular 5200 for an even stronger bond. I have used it on both the boat & AS, 48hrs to tack, 5-7 days to cure. I can see it working great for panel replacement sealing.

Bob
Old thread but hoping it still lives. I just got through using 3m 5200 quick cure to mount my solar panels with those big wide flanged ABS mounts to the flat roof of my canned ham 2024 t3 .032 aluminum

.... I prepped with acetone but that's about it.

Now I'm wondering if I made a mistake. I read something that 3m recommends a special primer... of course now I read it.

Are my panels going to fly off?

waaaaaa!!!!!

“If choosing 3M adhesive/sealants, understand that the repair may not last
as long as you would like. 3M Marine Adhesive Sealant Fast Cure 4000UV has
the best anchorage to clean aluminum, without the use of a primer. If you
prefer to use polyurethane adhesive/sealants like 5200, Fast Cure 5200 and
Fast Cure 4200, you will need to use two part epoxy primer called EC-1945.
This primer may be difficult to get because it is an industrial product and
is not readily available in most Marine supply stores.”
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Old 10-13-2016, 04:30 PM   #184
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Pm Lewster he is a SME (resident expert) on that.
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Old 01-06-2017, 12:45 PM   #185
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Just placed an order with VTS for a variety of items but saw that Capt Tolley's Creeping Crack Cure was $19.99 for an 8oz bottle on Amazon so ordered it there instead.

After a rainy new year's trip we were able to trace a couple of leaky spots so hoping the captain works well.
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Old 01-06-2017, 10:44 PM   #186
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massive rain storm headed to Cali ... and I got leaks

hey all, can anyone suggest an RV place than can pressure test my AS for leaks ? I went to great lengths to seal up rear end but still seeing a damp patch on the floor plus... cant find leak on one side that's causing a drip over kitchen and bedroom windows ..
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Old 01-06-2017, 10:59 PM   #187
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leak test ... I'm in Nor Cal btw ...

forgot to say, I'm in Nor Cal , San Jose Bay area ..
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Old 01-14-2017, 03:48 PM   #188
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May I ask about the windows on our 2005 Safari 28' which has black window frames. If there is a leak (and we have one coming in the window over the dinette) do we remove the window and put in a new gasket or use caulk? Would be a shame to apply white caulk against these frames. Any suggestions appreciated!!
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Old 01-14-2017, 04:38 PM   #189
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May I ask about the windows on our 2005 Safari 28' which has black window frames. If there is a leak (and we have one coming in the window over the dinette) do we remove the window and put in a new gasket or use caulk? Would be a shame to apply white caulk against these frames. Any suggestions appreciated!!
Why white??? SikaFlex 221 comes in its of colors......especially the gray that is a perfect match to Airstream's aluminum..........and it's not simply a 'caulk' but rather a single component polyurethane adhesive sealant.
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Old 02-28-2017, 12:12 AM   #190
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Sealing over sealant experiment

I had a burst of energy and took care of several small jobs around the house and trailers. I wound up with leftovers of three different types of sealants. So I did an experiment. I applied a patch of each to a tile, and let them dry for a month. Then I applied a blob of each to each patch, and waited another month. Then I tried to pull them apart. Some stuck, some did not.

The sealants I used were:

1) Lexel. Clear.
2) Silicone. White GE Silicone II
3) Polyurethane. Black Loctite PL S30

The results:
1) Lexel as base layer: Lexel sticks, the others do not (The Lexel product claims to stick to itself, so consider claim verified)
2) Silicone as base layer: Silicone sticks, the others do not (this surprised me; conventional wisdom says nothing sticks to silicone)
3) Poly as the base layer: silicone and poly stick, Lexel does not.

I suppose results might change if the base layers had been left out in the weather for five or ten years......
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Old 03-31-2017, 01:19 PM   #191
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Originally Posted by nickclifford View Post
forgot to say, I'm in Nor Cal , San Jose Bay area ..
Avalon RV in Benicia. Bayarea Airstream in Fairfield just got one but they may be busy with warranty work.
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