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post #1 of 13 Old 05-24-2006 Thread Starter
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Waterproofing Bimini

My Sunbrella Bimini is 4 years old now and is leaking in water when there's rain. I treat it with High Tech 303 but still it leaks when rain. I've also tried 3M Scotch Gard Fabric/Carpet Protector but its useless as well. Any suggestions ?
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post #2 of 13 Old 05-24-2006
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Wash it in mild SOAP to remove all the accumulated dirt, air pollution, etc. then reapply Apseal 303 water repellent .... not to be confused with Apseal 303 fabric protectant.
Most of these 'water repellents' are being rapidly removed from the market place due to apparent 'grave' environmental concerns .... 3M supposedly removed Scotchguard (in its original formulation) about 3-4 years ago ... so if you are using Scotchguard, etc. it may not be as effective in any 'new' formulation.
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post #3 of 13 Old 05-24-2006
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Hi guys
I bought a can of Scotchguard aerosol waterfproofing (sorry can't remember the exact name and the can is on my boat) but I got it from a camping shop where they recommended it for tents. Used it on my awnings and it worked a treat.
Just one thing though, it doesn't take well to rubbing. I removed some bird droppings a month or two later and the awning leaked right there.
If this thread is still running on Sunday I'll get the exact description of the product for you.
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post #4 of 13 Old 05-25-2006 Thread Starter
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Quote:
Originally Posted by Omatako
Hi guys
I bought a can of Scotchguard aerosol waterfproofing (sorry can't remember the exact name and the can is on my boat) but I got it from a camping shop where they recommended it for tents. Used it on my awnings and it worked a treat.
Just one thing though, it doesn't take well to rubbing. I removed some bird droppings a month or two later and the awning leaked right there.
If this thread is still running on Sunday I'll get the exact description of the product for you.
Ok, thanks. I'll wait for your return from your boat.
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post #5 of 13 Old 05-25-2006 Thread Starter
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Quote:
Originally Posted by RichH
Wash it in mild SOAP to remove all the accumulated dirt, air pollution, etc. then reapply Apseal 303 water repellent .... not to be confused with Apseal 303 fabric protectant.
Most of these 'water repellents' are being rapidly removed from the market place due to apparent 'grave' environmental concerns .... 3M supposedly removed Scotchguard (in its original formulation) about 3-4 years ago ... so if you are using Scotchguard, etc. it may not be as effective in any 'new' formulation.
Oh my! think I'm in trouble here. I believe I've been using the protectant all along and have been cursing it for being costly and useless.
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post #6 of 13 Old 05-25-2006
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LOL... I bet the labels are very similar too.

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post #7 of 13 Old 05-27-2006 Thread Starter
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Quote:
Originally Posted by RichH
Wash it in mild SOAP to remove all the accumulated dirt, air pollution, etc. then reapply Apseal 303 water repellent .... not to be confused with Apseal 303 fabric protectant.
Most of these 'water repellents' are being rapidly removed from the market place due to apparent 'grave' environmental concerns .... 3M supposedly removed Scotchguard (in its original formulation) about 3-4 years ago ... so if you are using Scotchguard, etc. it may not be as effective in any 'new' formulation.
RichH, if its not too much a trouble, could you take a picture of the "Apseal 303 Water Repellent" for me? I'll have to shop for this stuff. Thanks.
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post #8 of 13 Old 05-27-2006
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Water repellant is not water "proofing"

Keep in mind that water repellants from a can are only that. Repellants. Not water proofing. Repellants only slow down the flow. They don't stop it.
Sunbrella is a synthetic material that is treated with a synthetic glaze in the manufacturing process.That glaze fills the voids in the weave, preventing water from seeping through. Once that glaze is gone, it's gone. No amount of repellant is going to replace it.
The bimini is after all, a sun shade, not an umbrella. It may be time to buy a new bimini, or maybe just invest in a good set of foulies. And after all, it's only water.
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post #9 of 13 Old 05-30-2006
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303 Protectant:
http://www.westmarine.com/webapp/wcs...key=SiteSearch

303 Repellent:
http://www.303products.com/tech/inde...Product_ID=429

The protectant is for UV, etc. protection
The repellent .... well, 'nuff said.

Sunbrella (Glen Raven Mills) used to recommend that the water repelliency of standard Sunbrella be 'reconditioned' with 303 Repellent .... so as not to void the warranty when restoring repellency. This direction for restoration of repellency used to be on their website.
Sunbrella "Supreme" has an acrylic coating on the reverse side to aid in water repellency ... and this stuff is new. But as I stated before most of the phosphofluorine water repellents are being withdrawn from the marketplace ... so I 'imagine' that Sunbrella Supreme will probably / eventually be the 'substitute' for the standard Sunbrella. Standard sunbrella for years has had the phosphofluorine chemicals added (not a 'coating') but one must expect such fabrics to fade into oblivion with the withdrawl of the 'traditional' repellent chemicals.
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post #10 of 13 Old 05-30-2006 Thread Starter
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RichH, thanks for the info! I've seen that new Sunbrella material before (with acrylic coating on underside) but didn't realise its new stuff. Thought it was a fake Sunbrella since mine that comes with the boat looks different LOL! Now I know better.
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