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Boat Forum / Building / February 2008lining water tanks
I have steel water tanks on my boat (www.jassira.com) that are still solid but the insides are a bit mucky and rusty. My plan is to line the inside with glass fiber. . I have woven cloth, polyester resin, gel coat and a waxing agent that when mixed to the gel coat allows it to air dry. I had thought of using epoxy resin, which I understand is more water resistant, but when I went to buy some, it was suggested that epoxy might leach nasty things into the water..... I only want to do the job once so what resin should I be using... Thanks for your help Don't use FG or resin. It won't work. Ships use steel water tanks almost exclusively. The tanks are plastered with cement. It lasts for years and it keeps the water sweet. Steve >I have steel water tanks on my boat (www.jassira.com) that are still solid >but the insides are a bit mucky and rusty. My plan is to line the inside [quoted text clipped - 5 lines] >should I be using... > Thanks for your help >I have steel water tanks on my boat (www.jassira.com) that are still solid >but the insides are a bit mucky and rusty. My plan is to line the inside [quoted text clipped - 5 lines] >should I be using... > Thanks for your help You could do that with poly resin but the issue is what happens if water gets between the glass and steel. The steel will rust away. I sometimes make water tanks out of calcium silicate board (cement board) coated with grp. But in a boat, there would be mildew problems with that too. Maybe you might try thoroughly cleaning and derusting the tanks before painting it with a cementitious waterproofing compound. Essentially, it is cement and latex. Very waterproof and it sticks like hell to almost everything including metals. Available from builders shops and quite cheap. Arnold >Maybe >you might try thoroughly cleaning and derusting the tanks before painting it >with a cementitious waterproofing compound. Essentially, it is cement and >latex. Very waterproof and it sticks like hell to almost everything >including metals. Available from builders shops and quite cheap. You refer to Portland cement, I presume? Casady > You refer to Portland cement, I presume? > > Casady Yes, OPC (ordinary portland cement) based but there are some other additives to make it "rubberier". Probably has some very fine sand or silica as well. Arnold |
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