BOND IT ROOF SEAL – ROOF REINFORCING MAT is applied in conjunction with Roof Seal Liquid Membrane. It is heavy duty & primarily used to improve the strength of the membrane due to its strong tear & puncture resistance. ROOF SEAL – ROOF REINFORCING MAT is also perfect for rapid repairs on roof substrates such as blisters, splits & tears.For application purposes: Temperature during application of primer must be above 5°C. Apply a single coat of Seal it Primer to the surface with a brush or roller. Follow coverage rate to ensure minimum thickness is achieved. Leave to fully cure, normally overnight, in cold weather it may require 48 hours to fully cure.