[C320-list] "Canvas" Waterproofing Suggestions

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Dave Hupe

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Feb 25, 2021, 11:11:01 AMFeb 25
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Since purchasing our boat, I have used 303 Fabric Guard to attempt to restore water repellency on my aging Sunbrella canvas (bimini, mainsail cover, etc).   The first time I used it I really soaked the fabric.  While the fabric looked./felt nice afterward, rain did not continue to bead up and roll off as I anticipated. However, water did not seem to drip/pour through the fabric.  In subsequent applications, I applied the Fabric Guard as a heavy mist which seemed to provide about the same results (while using less of the material). 
The 303 Fabric Guard currently costs about $80/gallon on Amazon, which is pricey especially if applied heavily. I see Star Brite Waterproofing for about $45/gallon.  Star Brite also sells a water-based waterproofing for about $48/gallon. 
In preparation for the upcoming season, I am asking for your experiences/suggestions about what waterproofing to use and how to apply.

Dave Hupe
1994 C320 (#32) "Mayan Sun"
Holland, MI

Dave Hupe

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Mar 16, 2021, 4:43:56 PMMar 16
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Still hoping for some feedback from others on experience/suggested product(s).
Thanks, Dave Hupe

John morrison

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Mar 16, 2021, 4:59:47 PMMar 16
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Hey Dave I use the Aerospace 303 product and have always had good luck with it. I was using the stuff from Canadian Tire and you may as well pee on the canvas!!
JohnM
1999#574
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