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Hi Frank, I don't think you will want to hear this.....anyone
who is worth his salt in ferro-cement boat design will be fully
aware of one of the first important rules...do not create internal
tanks for fuel. A ferro-cement tank will hold water, and even
if it springs a leak it is easily repairable. The plaster mix
of a ferro-cement hull will absorb carbon fuels and especially
diesel fuel. And if the plaster mix is not absolutely spot on,
diesel will break it down. I have never seen a painted seal work
yet, on integral tanks. You can almost always tell if a ferroboat
has integral fuel tanks when she is out of the water....stand
well back and you will see a discoloured area of the hull where
they are grinning through. You will need to thoroughly drain
through all areas of the tanks and keel a water based solvent/detergent,
and then run through a cement grout mix until thoroughly sealed
with set grout. Then fit mild steel fuel tanks inside them, Regards,
Colin Brookes...colb@xtra.co.nz |
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