How and where to use guide
VELUX Insulation Collar 55x78cm BDX CK02 2011
Where to use this product
Install this insulation collar in pitched roof spaces where VELUX roof windows are being fitted. It is designed specifically for timber-framed roof construction with FSC graded timber of 32mm thickness or greater. The collar suits both domestic loft conversions and commercial building applications. It works around the VELUX CK02 2011 collar, creating a thermal break between the window frame and the structural timbers of the roof.
- Domestic loft conversions and attic spaces
- Commercial flat or pitched roof installations
- Any roof space with FSC 32mm or thicker timber members
- Retrofit installations around existing VELUX CK02 2011 collars
Installation and fitting
The collar is straightforward to install and should be fitted during the roof window installation process. Position the fiberglass collar around the VELUX CK02 2011 collar, ensuring it sits snugly against the roof trusses and rafters. The 55 x 78cm dimensions are designed to fit this specific collar size. Secure the collar in place so it remains in contact with the timber structure, creating an effective thermal seal. Installation should be completed before any plasterboard or internal finishes are applied to the roof structure.
- Fit the collar around the CK02 2011 collar before internal finishes
- Ensure snug contact with roof timbers for effective sealing
- Check that timber grades meet FSC 32mm minimum requirement
- Secure collar position to prevent movement during construction
Performance and maintenance
The fiberglass construction provides durability in roof space environments and maintains consistent thermal performance over time. The collar requires no ongoing maintenance once installed. It will not deteriorate from exposure to typical roof space conditions including temperature fluctuations and moisture variations. The collar remains effective indefinitely, continuing to reduce heat loss and prevent draughts around the window installation point throughout the building's life.
- Fiberglass material resists degradation in roof environments
- No maintenance required after installation
- Maintains thermal performance without deterioration
- Effective barrier against draughts and air leakage
Important limitations and compatibility
This collar is specifically designed for the VELUX CK02 2011 collar and will not fit other VELUX collar models. It is only suitable for use with timber grades of FSC 32mm thickness or above. Do not attempt to use this collar with thinner timber or non-timber roof structures. Verify collar compatibility before ordering to ensure correct fit and thermal performance.
- Compatible only with VELUX CK02 2011 collar
- Requires FSC timber 32mm or thicker
- Not suitable for metal or non-timber roof frames
- Check existing collar model before purchase