Fixing and buying guide
VELUX Insulation Collar 55x118cm BDX CK06 2000
Is this the right product for you?
This collar is essential if you are installing a VELUX CK06 roof window into a timber frame opening and want to minimise heat loss through the installation gap. It is suitable for new builds, loft conversions, and renovation projects where thermal performance matters. Check that your roof window is a CK06 size before ordering, as this collar is specifically dimensioned for that window grade.
- For CK06 VELUX roof windows only
- Fits standard timber frame openings
- Ideal for new builds, renovations, and loft conversions
- Works with fibre batts, cellulose, and standard loft insulation
What you receive and pre-installation checks
You will receive one fibre-reinforced plastic collar measuring 55×118cm. Before installation, confirm that your roof window opening is a CK06 size and that your timber frame is in good condition with no rot or damage. Check that you have sufficient loft insulation material on hand (fibre batts or cellulose) to work with the collar, and ensure the opening is clean and free from debris.
- One 55×118cm fibre-reinforced plastic collar
- Verify your window is CK06 size
- Inspect timber frame for damage
- Have insulation material ready before fitting
Installation overview
The collar is designed for straightforward installation around the timber frame opening. Position it to create a tight seal between the window frame and your loft insulation materials. The fibre-reinforced plastic construction is durable and will not degrade when in contact with standard insulation types. Ensure the collar sits flush against the frame to maximise the thermal seal and prevent heat loss.
- Position collar around timber frame opening
- Create tight seal with surrounding insulation
- Ensure flush fit against frame
- Compatible with fibre batts and cellulose insulation