Title: JB Weld 8277 Waterweld

Description: Epoxy Adhesive, Underwater, Off White, 2 oz., Stick, Mixing Ratio 1 to 1, Temp 250 F, Application Time 20 Min, Full Cure 20 to 30 Min, Shear Strength 1000 PSI, Bonds Ferrous and Non Ferrous Metals, Porcelain, Ceramic, Marble, Glass, Plastics, Fiberglass, Concrete, Wood, Many Porous and Non Porous Materials, For Repairing Moist Surface and Under Water Applications Gas Tanks, Water and Fuel Cans, Pipe Repair, Ruptured Radiators, Pools and Spas, Gutters and Downspouts and Auto Body Repairs Item Package Quantity 1

Description: WaterWeld will plug or seal leaks and patch holes and cracks in almost anything

Ideal for repairing plumbing, fuel tanks, tub and shower

Drains, pool, spa, boats and potable water tanks, setup occurs even under water

After curing, it can be drilled, tapped, filed, sanded and painted

Pack of 1

Is this safe to use on potable water lines?

Yes, it's non-toxic, but I wouldn't advise chewing it.

Can it mend a crack in my fiberglass tub surround?

Extremely disappointed in results. Didn't work at all.

Can I use this inside my pool?

Tried on a hot tub. Didn't work.

Is there a minimum temperature for using this?

The directions are on the product. I believe you should use this stuff when the air temperature is above 45 or so. Also, the area should be completely dry, with no leaks or drips until this stuff cures. Hopes this helps.................... FG