Save-A-Boat - The Forum for Plastic Classic Rebuilds!

ok, i'll ask some more people in the industry that makes fiberglass tanks..so far...all the manufacturers based on my research(local and international) uses these food-grade resins for making their tanks...i guess one of the reasons why the authorities gave permission for these fiberglass tanks coul...

hey guys, i've got another question...how thick should a fiberglass tank be in order to store a certin amount of liquid? is there a formula for strength/stress tolerances?how many layers of roving fiber? or chopped etc...is it all gut feel and approximation?

i'm building a spherical water tank of about 500 liters in volume...i've just recently found out that our polyester resin is already food-grade:D

i was wondering about what resin to use for the inside coating of my tank, because i read in the website of a water tank manufacturer that they are using an NSF listed resin...apporved for potable water storage... anyone knows about a nsf listed resin?

does anyone of you guys know if a fiberglass tank made of polyvinyl ester resin safe for drinking water? i've been hearing about all these stuff saying that polyvinyl ester is toxic and not suitable for water storage etc.... please help, i can't start with my water tank project because of all these ...