Yankee Dog Posted May 11, 2021 Report Share Posted May 11, 2021 Getting ready to order the 6oz polyester. What is the lightest material I can use to coat the fabric. Quote Link to comment Share on other sites More sharing options...
Hirilonde Posted May 12, 2021 Report Share Posted May 12, 2021 Hmmmm, interesting question. Can't say that anyone has asked it before. It's the weight when dry that matters, and how much of the material it takes to waterproof the boat. I don't know where you could get data on either. Quote Link to comment Share on other sites More sharing options...
Kudzu Posted May 12, 2021 Report Share Posted May 12, 2021 I doubt there is any practical difference in any of them. Quote Link to comment Share on other sites More sharing options...
Yankee Dog Posted May 12, 2021 Author Report Share Posted May 12, 2021 Since I am prone to experimentation, I may try Locktite PL Roof and Flashing Sealant. I did an experiment and it held water until it evaporated. Dried to a rubbery finish that held up to a screwdriver. I could wad it up with no cracking or delamination. Black in color and will hold up to UV. Long term. I tried the PL construction adhesive. It worked well, but my paint would not adhere. So the boat still floats and paddles well, but the paint looks like poop. Quote Link to comment Share on other sites More sharing options...
Kudzu Posted May 13, 2021 Report Share Posted May 13, 2021 If your going to paint, skip the goo and just paint it. Proven to work and last. Quote Link to comment Share on other sites More sharing options...
Hirilonde Posted May 14, 2021 Report Share Posted May 14, 2021 I don't understand why you would want to use goo either. If after painting you have a hole opened up along the seam from sewing, then maybe use a dab there. But use a paintable goo and only if you have to, and sparingly. Quote Link to comment Share on other sites More sharing options...
Yankee Dog Posted May 14, 2021 Author Report Share Posted May 14, 2021 The black flashing goo does not require painting. It dried to a non tacky rubbery finish. my test found it to be unmarked after repeated stabbing with a screwdriver and totally flexible and waterproof. It is certainly more difficult to apply than pant. On the other hand t only requires a single coat. Oh well, still undecided. I have until the skin arrives and I sew a t on to decide. What do I have the lose beside $140 for another skin. Quote Link to comment Share on other sites More sharing options...
benhardt57 Posted May 18, 2021 Report Share Posted May 18, 2021 I hope it works out for you, but this approach is surprising when the title of your post is "lightest coating". I'm thinking it ends up heavier than Rustoleum. -Ben 2 Quote Link to comment Share on other sites More sharing options...
Yankee Dog Posted May 19, 2021 Author Report Share Posted May 19, 2021 On 5/17/2021 at 7:40 PM, benhardt57 said: I hope it works out for you, but this approach is surprising when the title of your post is "lightest coating". I'm thinking it ends up heavier than Rustoleum. -Ben Im afraid you might be right. The rustoleum will take about what, 1/2 gallon. Yes, no, maybe....? I estimate 2 or 3 tubes of the goop? Decisions Decisions...... Quote Link to comment Share on other sites More sharing options...
Kunzie Posted May 19, 2021 Report Share Posted May 19, 2021 I had 1 1/2 quarts of Rust oleum on my Vardo. Quote Link to comment Share on other sites More sharing options...
Hirilonde Posted May 20, 2021 Report Share Posted May 20, 2021 12 hours ago, Kunzie said: I had 1 1/2 quarts of Rust oleum on my Vardo. Same, 3 coats. Quote Link to comment Share on other sites More sharing options...
Yankee Dog Posted May 24, 2021 Author Report Share Posted May 24, 2021 Look what I found. Refer to the Material Safety Data Sheet (MSDS) where it should tell you the percent weight solids of the paint. Suppose the % Wt solids is 60% and the weight of the paint is 9.0 lbs/gal, then the weight of the solid paint will be 5.4 lbs/gal. If you intend to spray apply the coating to the aircraft using an HVLP spray gun, you can guesstimate that your transfer efficiency will be about 50%. In other words for every gallon of paint that you use, only 2.7 lbs of solid paint is deposited on the aircraft. The remainder falls to the floor or goes into the filters of a spray booth. Hence, if you know approximately how many gallons of paint you will need to purchase, you can estimate the weight of the solid paint that will be deposited. Quote Link to comment Share on other sites More sharing options...
Hirilonde Posted May 25, 2021 Report Share Posted May 25, 2021 I dare anyone to prove with evidence that it makes even a half pound difference for products to properly waterproof a SOF boat. Quote Link to comment Share on other sites More sharing options...
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