Question: is jb water weld sandable?
Answer: WaterWeld cures to an off-white color, is rated at a tensile strength of 1300 PSI and will withstand temperatures up to 300ºF. WaterWeld can withstand continuous temperatures of 300oF/149oC and intermittent temperatures of 350°F/177°C. WaterWeld is waterproof, petroleum, chemical and acid resistant once fully cured!