What is the nemesis of foam caulk?

Foam caulkWe often use it. It is a good polyurethane foam filling material that can waterproof and seal. So what’s the nemesis of foam caulk? Let’s take a look with the author. 1. What is the nemesis of foam caulking? Polyurethane foam caulking agent‘s nemesis is water and oil. If there is water and oil,…