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Thread: Ok, they're clean now so what do I waterproof them with? Reply to Thread
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  Topic Review (Newest First)
11-22-2007 12:58 PM
fcsob 303 Fabric Guard. Says it is the only protectant recomended by Sunbrella.
303 Areospace Protectant for plastics,rubber ect.We used it on our dodger it realy made a big difference.
11-22-2007 10:51 AM
bestfriend Another Halekai post added to my favorites for future use.
11-22-2007 07:29 AM
Maine Sail
303 High Tech Fabric Guard...

303 High tech Fabric Guard is the ONLY approved waterproofing treatment for Sunbrella! Do not confuse it with 303 Aerospace Protectant they are two entirely different products for different purposes.

This product is NOT recommended because Glen Raven Mills, the parent company to Sunbrella, owns 303 and they make money from it. It's recommended because after vast amounts of testing, this directly from our rep at Glen Raven (I'm a silent partner in a Marine Canvas Business), it's clear, by quite a long shot, that 303 High Tech Fabric Guard is the best product for the fibers, waterproofing, dirt, pollution and stain resistance.

As an aside, I spilled some 303 High tech Fabric Guard on my Mahogany deck last year. To my surprise, and to this day, that spill spot NEVER gets wet and is still beading water a full year later! It would be an expensive deck treatment but holy crap that stuff lasts!!!

One last note DO NOT wash Sunbrella in a washing machine! Yes it came out clean and I know it's tempting, but detergent WILL and CAN destroy the Sunbrella fibers and the tossing and turning action of a front loader actually has the fibers sawing against each other thus shortening it's life span. We clean Sunbrella in a large soaking tub with Dreft or Ivory Snow non detergent soaps. After a day or two in the tub the dirt and pollutants are all sitting on the bottom of the tub and the product is clean. Washing Sunbrella in a machine will shorten it's life so try and not do it more than ABSOLUTELY necessary...

303 High Tech Fabric Guard:
11-22-2007 07:01 AM
donradclife I have had good luck with the Starbrite waterproofing, which you can spray, brush or roll on--doesn't change the color too much, and lasts about a year between recoats on my dodger.
11-22-2007 12:02 AM
Valiente ScotchGard is ridiculously toxic on the atmosphere...its main ingredient is (or was) a type of CFC.

11-21-2007 09:49 PM
sailingdog The newer formulations of ScotchGuard aren't as effective due to changes in their formulation. IIRC, they changed the formulation due to EPA restrictions on some of the old ingredients.
11-21-2007 09:43 PM
blt2ski The wash in type is typically for breathable type fabrics like gor-tex or equal. Spray ons work well too. probably better for heavier fabrics like sail covers etc.

Personally, I would try to web browse sunbrella's sight and see if they recommend a particular product, if any at all. or tents, I have found the spray on silicone based products work best, or coats that are not breathable style fabrics. or my carhart work coat and vest.

I gave up on scotch guard yrs even a decade or two ago. never found it to work waterproofing wise, but did keep stains off! That is my experienc with it.

11-21-2007 08:29 PM
bestfriend There are some treatments that are actually wash-in treatments. Just add it to the wash. You can by them at REI, although I am not sure how much better they are than spraying scotch guard or similar.
11-21-2007 07:32 PM
11-21-2007 07:25 PM
CharlieCobra I used an HE detergent and wanted to waterproof them so they keep water off the sails. Thanks for the responses.
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