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Old 07-15-2016, 06:56 AM   #15
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I am finding that 5 years is about the limit for my sealing jobs, for my climate, sun exposure and storage situation. UV is the killer, IMO and observation.
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Old 07-15-2016, 07:22 AM   #16
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Many of the exterior accessories are sealed with foam gaskets. I wonder about the effects of UV and general aging on these. It looks like these will also need replacing at some point. Anyone have some experience to relate? Are they available or must we make our own?
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Old 07-15-2016, 07:33 AM   #17
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I would also like to know if anyone has used top grade marine quality sealants? We talk about UV being the enemy but the sealant industry has addressed that. My cruising sailboat spent 16 years in the sun every day before anything needed to be rebedded or resealed...and even then the work was only minor. After 4 years my Airstream roof had cracking and peeling sealant and Airstream does not use top quality 25 year or more sealants.

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Old 07-15-2016, 07:49 AM   #18
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Seems to me most owners seem to have leaks not so much from segments but appliances penetrating the shell like lights fans skylites antennas etc.
The upper awning arm attachment points are another place to check for leaks. Both the front and back leaked on our '74 Sovereign. Each was attached by a combination of 3 rivets or screws along with silicone caulking. I removed them and re-attached with butyl tape, rivnuts and #10 stainless steel bolts. I also drilled a couple of additional holes. I think part of the problem is that there was no attachment at the bottom of the casting and with the forces the awning can put on these parts it's not enough to keep them from moving and loosening the fasteners.

There is a fifth bolt that can't be seen under the end of the awning arm.
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Old 07-15-2016, 09:14 AM   #19
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I would also like to know if anyone has used top grade marine quality sealants? We talk about UV being the enemy but the sealant industry has addressed that. My cruising sailboat spent 16 years in the sun every day before anything needed to be rebedded or resealed...and even then the work was only minor. After 4 years my Airstream roof had cracking and peeling sealant and Airstream does not use top quality 25 year or more sealants.

Larry
Larry, There are UV specific Polyurethanes, as I am sure you know. I should have noted that, and as you reminded me, I am not sure that my reseal 5 years ago was with the UV formulation. I recall learning about it at about the same time....so my every 5 years may be low, if the UV formulation is used. I did use UV poly this spring at the 5 year mark of my first reseal. (AS is 10 years old by its birth date, this month.
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Old 07-16-2016, 07:48 AM   #20
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I've used this product on the roof of our Foretravel when we had a Moho and it worked great. Is is used predominantly on school busses which are bolted & riveted like Airstreams... Wonder if it would address the sealing issues?

http://www.hytechsales.com/prod2150.html
.
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Old 07-18-2016, 04:43 AM   #21
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Good thread. Always learn something. Following.
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