How and where to use guide

VELUX Underfelt Collar 134x98cm BFX UK04 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 Underfelt Collar is engineered to create a secure, weather-tight seal around skylight and rooflight installations. This 134x98cm model suits UK building regulation requirements and is suitable for both professional and DIY installations. The colla...