Airflow recommends this sealant be used with all its roof tile products. Used to make the strong, durable and weathertight bond on all the roof vent skirts, tiles, slates, mortar and brickwork you require.  The 290ml application tube with its nozzle fits standard sealant guns making this product an easy to use sealant solution. Each tube carries enough sealant for two Airflow Universal Roof Terminals.