How and where to use guide

VELUX Vapour Barrier 94x160cm BBX PK10 0000 should be used according to the intended application and site requirements. How and where to use: - Prepare surfaces and adjoining assemblies before installation. - Install to manufacturer guidance and relevant site standards. - Check fit, alignment, and finish quality before handover. - Additional context: The VELUX BBX vapour barrier collar is engineered to work with compatible VELUX roof window and Sun Tunnel systems. It supports a weather-tight and visually consistent roof finish, helping to maintain the integrity of your installation over time. Suitable f...