How and where to use guide

VELUX Underfelt Collar 134x140cm BFX UK08 1000 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 BFX UK08 1000 Underfelt Collar is engineered to work with compatible VELUX roof window and Sun Tunnel systems. It incorporates a transverse drainage gutter to manage water run-off and maintain a weather-tight seal at the roof penetration. The coll...