Hi I have a built it fibreglass water tank, which seeps into nearby compartments. I can't find the sorce of leak, is there a waterproofing product I can paint inside the tank that's good for drinking water? What have others done?
If you fibreglassed the tanks, wouldn't it be best to scuff back and paint a thickened fibreglass resin in the tank to catch the pinholes. Titanium dioxide is a cheap and harmless filler to thicken up the resin. Or just use a gelcoat resin if you made them out of poly.
Note West System Epoxy is not recommended for water tanks.
There's a range of acrylic water proofing products available & some are for potable water check at the big green shed. Looks like a testing job if they're much more than 400mm deep, possibly easier to start again
sunycoastguy said.. Hi I have a built it fibreglass water tank, which seeps into nearby compartments. I can't find the sorce of leak, is there a waterproofing product I can paint inside the tank that's good for drinking water? What have others done?
I use epoxy for my tanks and they are fine but it looks like yours are poly. If you can remove the tanks I would sand them and put two layers of nice fine surfboard cloth over the tanks. Heavier fabric has more chance of pinholes.
Thanks for the reply, I found the leak!! I drained the tanks then next day saw a brown, tea coloured water leaking back into the tank. So I fibreglass that section up, will fill it up tomorrow, but confident that was the leak.
