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Old 19-10-2015, 07:56   #31
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Re: How long will the UV resistance of Sunbrella last?

Another options for those looking for something cheaper. Search Ebay for "Marine One Fabric".

Although I haven't had it very long, but everything on my boat was made with it. Since the price was less than 1/2 of Sunbrella, I decided to take the risk on it. I spoke with another Cruiser who has been in the Caribbean with it for 4 years. She reported it was going strong and still looked new on her Bimini.
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Old 19-10-2015, 08:10   #32
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Re: How long will the UV resistance of Sunbrella last?

you will get 10 years out of blue sunbrella, the stitching rods out before the material breaks down
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Old 19-10-2015, 08:25   #33
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Re: How long will the UV resistance of Sunbrella last?

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If there is no abrasion or other physical damage to Sunbrella, how long will its UV resistance last? I had one sail maker claim it lasts only 5 or 6 years. Does anyone know?
10 plus years. The stitching and leather fail first. This gives you a visible failure mode.

5 to 6 years would be. Minimum life in our experience.

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Old 19-10-2015, 12:21   #34
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Re: How long will the UV resistance of Sunbrella last?

Virginia-
I think "neoprene thread" is a sign of memory failure. Someone confused "the same thread they sew neoprene with" (which could be plain polyester or nylon) with "neoprene thread" and there's no thread, AFAIK, that is made of neoprene.


An issue in the sailing, tentmaking, canvas industries is that if your thread is not matched to your fabric, the thread can actually saw through the fabric and cut it apart. There's no easy repair for that. But if you choose a weaker thread, when it fails you can literally sew through the same old holes--right on the dotted line--to replace failed thread. Traditionally the best choice was "dacot" dacron thread with a polyester wrapping, two materials in thread. The dacron core provided strength, the polyester wrapping softened the chafing and cutting against the fabric.
The new (10-15 years?) GoreTex stuff is supposed to have similar benefits, being very durable but not sawing up the fabric.
Proper tension on the thread also is going to affect that, another reason that a loft or shop using cheap labor may or may not provide the same results, even if they are using the same materials and the end product looks the same to the eye.
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Old 20-10-2015, 01:16   #35
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Re: How long will the UV resistance of Sunbrella last?

I guess we are of the who cares what it looks like camp. Our bimini is 15 years old and dark blue so in the summer and lower latitudes was quite warm in the cockpit. So we painted it with white elastic roofing paint. It really cut the heat as we went south to Colombia and across the Carib and in the Greek islands a couple of German cruisers noted it and told us how smart we were to be able to cut the heat. It also reinforced it and made it water proof. We just reapplied a coat as it was beginning to wear a bit. Hope we can get another 5 years out of it.
But works great but if you want a pretty boat is it ok only. We care more about being dry and a bit more comfortable than having a pretty boat.
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Old 09-01-2016, 21:30   #36
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Re: How long will the UV resistance of Sunbrella last?

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Originally Posted by estarzinger View Post
Mmm . . . . North sails did some tests . . . . Structurally sunbrella will last a long time . . . . BUT after 3 years it no longer blocks uv and allows much of it thru (less than 50% blocked after 3 years) to damage the sail it is suppose to protect.

North recommends you have a light taffeta sewn into the underside of a sunbrella sail cover to block the uv.

I always did that (made my own sail covers) and it does not add much weight or bulk or material cost (dies add some labor).
only 3 years for UV block???????.....say what???????????? holy $%@#
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Old 10-01-2016, 04:25   #37
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Re: How long will the UV resistance of Sunbrella last?

Ok so long will Weathermax 80 block UV? Any research on that material?
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Old 10-01-2016, 11:39   #38
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Re: How long will the UV resistance of Sunbrella last?

No doubt genuine silk taffeta while you're at it?


I can't see that working any better than an extra layer of any tightly woven cloth...but I suspect an annual spray with 303 or a similar UV and waterproofing spray would provide more protection with less cost (fabric, sewing, weight,etc.) than a magic lining.


Or maybe I should start buying taffets shirts to give me UV protection outdoors?(G)
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