VELUX Underfelt Collar 55x98cm BFX CK04 1000

Key features

• Sized 55x98cm for CK04 VELUX windows
• Creates weathertight seal between frame and underlay
• Prevents water penetration at roof junction
• Compatible with pitched roof installations
• Essential component of complete flashing system
• Straightforward installation with roof underlay

Specifications

Product type

Underfelt collar

Dimensions

55x98cm

Window size

CK04

Application

Pitched roofs with underlay

Material

Durable weatherproofing material

Installation

Between window frame and roof underlay

Description

The VELUX underfelt collar is a weatherproofing component designed for CK04 roof windows on pitched roofs. Measuring 55x98cm, it creates a secure seal between the window frame and roof underlay, preventing water ingress at the critical junction. This collar works as part of the complete flashing system and is essential for maintaining the integrity of your roof installation. Suitable for use with standard pitched roof constructions where underlay protection is required.