JSullivan Posted June 26, 2013 Report Share Posted June 26, 2013 There is a lot of information available on what possible coatings to use for waterproofing a boat skin, but not much info on what amount is needed. Since some people (like myself) have to order this stuff from online, it would be helpful to know how much will be needed depending on what type of coating. Let's assume a 16 ft. canoe with normal beam design & 1050 denier nylon. My guess is that the amount required for that would work for most crafts people want to build. How much coating should people expect to use if they are building a 16ft canoe with: 1) Zar Polyurethane 2) Famowood Dura-tuff 3) Colean 4) Corey's Skin Boat goop If anyone would like to throw out relevant numbers regarding Kayaks for others' reference, please do so as well. Quote Link to comment Share on other sites More sharing options...
Kudzu Posted June 26, 2013 Report Share Posted June 26, 2013 Paint on polyester, 2 quarts if you're going to mail order. I can usually get by with one quart but sometimes I need part of the second quart and I would rather not have to wait on a second to be shipped. Make sure the ZAR is oil based! It's getting harder to find like all oil based. Dura-tuff is water clear, very thin so you could probably do it with a quart, but..... I really like Dura-tuff. I just don't care for white boats much or I would probably use it more. Never used the other two so can't say. Quote Link to comment Share on other sites More sharing options...
P Doug (WA) Posted June 26, 2013 Report Share Posted June 26, 2013 I have only use the Zar poly and mixed stain in. I used a little less than a quart. I ordered 2, just in case. Quote Link to comment Share on other sites More sharing options...
Bcone1381 Posted June 26, 2013 Report Share Posted June 26, 2013 Can I use a stain that is intended for wood, apply it to my polyester cloth in order to color it, then apply the clear Dura-Tuff? Quote Link to comment Share on other sites More sharing options...
Kudzu Posted June 26, 2013 Report Share Posted June 26, 2013 Can I use a stain that is intended for wood, apply it to my polyester cloth in order to color it, then apply the clear Dura-Tuff? I don't know. Stain soaks into the wood where paint rests on the surface. You can't dye polyester like you can nylon. That may be because it doesn't soak into the fibers? Just thinking out loud here. I have some concerns if the stain will adhere to the poly. You could thin paint of the right color, apply that and then cover in Dura-Tuff. It really depends on exactly what stain is and I have never looked at that. I suspect it is just a solvent with pigments in it. Once the solvents evaporate it is just a question if the pigments will stay adhered? I really just don't know. My best advice is test it on some scrap. I am just not sure if or how well this would work. If you do let us know how it works. Quote Link to comment Share on other sites More sharing options...
Bcone1381 Posted June 27, 2013 Report Share Posted June 27, 2013 Here are Two experimentation projects. A 4 inch piece of polyester stained and varnished sits on top of a frame that I covered with 2.7 oz polyester. A second layer was glued the first with vinyl product made for the aircraft covering process. The stain was rub tested and did not transfer onto another surface nor show signs coming off. Quote Link to comment Share on other sites More sharing options...
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