JustJames Posted November 19, 2021 Share Posted November 19, 2021 Hi All My boat has a custom cover. The fabric seems hale, hearty and strong, but leaks like a sieve. Does anybody have experience of using brush on (or similarly applied) waterproofing treatments? Googling turns up a few, and of course they all claim to be fantastic, so I am interested in real world eperiences. Link to comment Share on other sites More sharing options...
yella king Posted November 20, 2021 Share Posted November 20, 2021 Hi when you say it leaks like a sieve, is the boat out in the rain and not under cover or does it leak if you are travelling and it`s raining. Link to comment Share on other sites More sharing options...
JustJames Posted November 20, 2021 Author Share Posted November 20, 2021 The boat lives outdoors, and after rain there is water in the boat. Link to comment Share on other sites More sharing options...
61 crusher Posted November 20, 2021 Share Posted November 20, 2021 Have you got an A frame under the cover to allow the water to run off or does it sag & fill up with water? Link to comment Share on other sites More sharing options...
Rebel Posted November 20, 2021 Share Posted November 20, 2021 Maybe ask some one who sells them or makes them. I have a waterproof cover, bought it on line years ago. Heavy duty. Cheers. Link to comment Share on other sites More sharing options...
campr Posted November 20, 2021 Share Posted November 20, 2021 If its canvas try a camping supply store. Older style tents required fabric to be treated with a waterproofer. If its a plastic material I doubt there is much available. Link to comment Share on other sites More sharing options...
XD351 Posted November 20, 2021 Share Posted November 20, 2021 You could try this stuff available at Bunnings- can’t vouch for it as I have never used it . Or try Nans tarps at lidcombe they may be able to advise on a better product , also places that sell caravans and camper vans or parts for them . Also as it is just a silicone spray you could try the stuff they put on tyres like tyre shine- it is just silicone spray and you can buy it cheap from places like supacheap . Your boat shouldn’t fill with water as you should be leaving the bungs out and Jack the front ( Bow ) up so it is higher than the rear (transom)and the water will drain out through the bung holes . 1 Link to comment Share on other sites More sharing options...
yella king Posted November 20, 2021 Share Posted November 20, 2021 I too would doubt that you could find a waterproof sealing agent that would work, plus I personally wouldn`t like to put anything like that on my custom boat cover as you never know what it will do to it. I would suggest leaving the bungs out, tilt the boat as high as possible using the jockey wheel and if possible cover the boat with a poly tarp. Link to comment Share on other sites More sharing options...
JustJames Posted November 20, 2021 Author Share Posted November 20, 2021 Thanks for the responses so far. Keep 'em coming. There is water in the boat that the amount of slope (with the jockey wheelfully extended) and poition of the bung hole does not allow to drain. The shape of the boat and construction of the cover is such that there are no places where water pools in the cover. Link to comment Share on other sites More sharing options...
zmk1962 Posted November 20, 2021 Share Posted November 20, 2021 Have you been in the boat under the cover when it’s raining? It seems you are getting so much water that I doubt it’s seeping through the canvas, it’s more likely the water is being channeled and running into the hull in some places - probably where the cover folds across a gunnel or around something. A picture would help ! You may want to place a block of wood or a brick under the jockey wheel to get more angle and help drain the water. 14 hours ago, yella king said: I personally wouldn`t like to put anything like that on my custom boat cover as you never know what it will do to it. I have used products like that on very expensive ski jackets, pants and even hiking boots. These products do work to help repel moisture. They dry clear and penetrate/coat the individual fibres to prevent them holding moisture. They don’t bridge across the fibres to create a skin coating - it’s not paint like. cheers Zoran Link to comment Share on other sites More sharing options...
shakey55 Posted November 30, 2021 Share Posted November 30, 2021 On 11/20/2021 at 10:52 AM, JustJames said: Hi All My boat has a custom cover. The fabric seems hale, hearty and strong, but leaks like a sieve. Does anybody have experience of using brush on (or similarly applied) waterproofing treatments? Googling turns up a few, and of course they all claim to be fantastic, so I am interested in real world eperiences. My custom cover made from Sunbrella (or similar, can’t remember) material is about 6 years old. Has lost some of repelling feature but water runs off and very very little if any gets inside. the bloke who made it recommends 303 Fabric Guard, but this gets a little expensive for the amount you (I) would need. https://www.automegastore.com.au/303-fabric-guard-for-marine-fabrics-473ml?gclid=Cj0KCQiAtJeNBhCVARIsANJUJ2EhzS7ZT3yE2_78v7j-DetfuyhA8qBAtvwuRNN8dCK50AeGSf9W8ssaAjL9EALw_wcB I’m still looking for a suitable product to do mine. let me know if you find something. Link to comment Share on other sites More sharing options...
nnickn Posted December 2, 2021 Share Posted December 2, 2021 Starbrite waterproofing/fabric treatment. works well for me. Link to comment Share on other sites More sharing options...
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