Fibber mesh waterproofing for terrace Rvs waterproofing construction chemicals Application chemicals supplier distributor If you don't know what fibreglass mesh is, then let me tell you that it is a cheap material that doesn't burn and is characterised by both high strength and low weight. Due to the several attributes and features of fibre glass, it is used in several waterproofing applications, such as on concrete roofs or balconies.