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#1
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I'm putting the final barrier coats of epoxy on my first S&G kayak and
have two questions some of the experiened folks here might know. I'm using West Epoxy (105) with the 207 Hardener for the barrier coats. How long do I have to wait before I can paint the hull? What type of paint would be recommended for someone without a spray setup for this situation? Thanks, Gary |
#2
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Gary,
I put 5 'barrier coats' on my WWP-19. The first two were 'standard' WEST System {5:1 ratio}, the third was WEST with some of their 'Barrier Coat Additive', and the 4th & 5th were Pettit 2-Part Barrier Coat {5th coat tinted blue}. About 15 mils or more, total. I also added a bit of extra 'glass' under it all, at critical places. Because your kayak *probably* won't 'live in the water', you shouldn't have to go to these extremes { YES - a little paranoia is not necessarily bad}. How long you *should* wait depends on what you intend to do with the kayak, and the amount of patience you have. If you are just using 'straight' epoxy, 'theoretically' you can paint it after about 7 days - with 70+ degree daytime temperatures, and not below 50 degrees at night; maybe sooner if the temperatures are higher. Epoxy *actually* takes several months to *FULLY* cure under typical temps & humidity. This is the nature of the complex internal chemical reaction. I would try to give it a full month, at least; keeping the epoxied surface away from exposure to UV. With the temperatures dropping {at least here in the Mid-Atlantic area}, I'd finish the kayak and store it away until next Spring. However you proceed, and IF she won't be an 'in water vessel' {needing 'Anti-Fouling Paint'}, you have a great many choices. What ever you do, the FIRST thing is to lightly scrub the epoxied areas with a Scotchbrite Pad and some warm & mildly soapy water. Rinse well & repeat. Now wipe dry with a LOT of CLEAN paper towels {I AM paranoid !!}. This is to remove ANY Amine Blush or other dirt, it also will give some 'tooth' to the epoxied surface . . . in fact you may want to use an 80 grit Carbide paper for the first 'wash'. On the 'Cheap' side, a great number of people recommend the 100% Acrylic 'Porch Paint'. Easy to apply, easy to clean up, and no 'bad' solvents. A dash of 'Flotrol' enhances the application - & allows better control for 'roll & tip' techniques. A tip from the Laboratory people - allow AT LEAST 14 days to 'cure' before handling the painted surface. This is the solution to the complaints of 'softness' & 'peeling'. Next, there is the 'standard' Alkyd Porch & Trim paints & enamels {oil based, solvent clean-up}. Lastly, there are the 'Marine' paints, typically used on Fiberglass/Gelcoat boats - oil based, solvent clean-up. The *basic* idea of ANY finish over cured epoxy it to prevent degradation from UV exposure. "Ye pays your money, & takes y're choice". Regards & Good Luck, Ron Magen Backyard Boatshop "Gary Gabriele" wrote in message ... I'm putting the final barrier coats of epoxy on my first S&G kayak and have two questions some of the experiened folks here might know. I'm using West Epoxy (105) with the 207 Hardener for the barrier coats. How long do I have to wait before I can paint the hull? What type of paint would be recommended for someone without a spray setup for this situation? Thanks, Gary |
#3
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![]() On the 'Cheap' side, a great number of people recommend the 100% Acrylic 'Porch Paint'. Easy to apply, easy to clean up, and no 'bad' solvents. A dash of 'Flotrol' enhances the application - & allows better control for 'roll & tip' techniques. A tip from the Laboratory people - allow AT LEAST 14 days to 'cure' before handling the painted surface. This is the solution to the complaints of 'softness' & 'peeling'. Next, there is the 'standard' Alkyd Porch & Trim paints & enamels {oil based, solvent clean-up}. Lastly, there are the 'Marine' paints, typically used on Fiberglass/Gelcoat boats - oil based, solvent clean-up. The *basic* idea of ANY finish over cured epoxy it to prevent degradation from UV exposure. "Ye pays your money, & takes y're choice". I've used both acrylic and regular exterior semi-gloss latex on my small boats and prefer the acrylic. Like a kayak my boats come into contact with substances other than water frequently, beaches and roof racks to name a couple. The acrylic holds up better. I've also painted a daggerboard with a hard floor paint and then again with the softer latex. The hard paint stood up to the scraping on the inside of the daggerboard trunk much better than the softer latex. The soft latex is good for a larger boat which sits in the water because the latex just sloughs off over time whereas a hard paint will eventually crack, blister, and peel. The softer latex is easier to maintain in that situation. All of my cheap boats are just paint over plywood, no resin under the paint except along the seams. From the condition of the seams I'm not convinced resin on top of plywood does much good until its built up to the point it adds a lot of weight. I let paint dry for 3 days before putting it in the water. -- ------------------------------------------------------------------------------ William R Watt National Capital FreeNet Ottawa's free community network homepage: www.ncf.ca/~ag384/top.htm warning: non-freenet email must have "notspam" in subject or it's returned |
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