Fixing and buying guide

Who this product is for

This flashing is suitable for builders, roofers, and experienced DIY installers working on pitched roof installations in timber-framed buildings. It is designed for projects where roof windows or similar penetrations require secure weather-tight sealing. You should have experience with roof work and understanding of roof pitches before undertaking installation.

Compatibility and sizing

The 55x98cm EBW CK04 0021C flashing is compatible with timber-framed buildings that have a minimum eaves width of 600mm. This product is engineered to perform reliably across multiple roof pitches and angles, making it suitable for a range of pitched roof configurations. Always verify that your building meets the minimum eaves width requirement and that the flashing dimensions suit your specific roof opening before purchase.

• Size: 55x98cm (21.6 x 38.6 inches)
• Material: Vinyl-coated polyester
• Minimum eaves width: 600mm
• Suitable for multiple roof pitches and angles

Pre-installation checks

Before fixing, measure your roof opening and eaves width to confirm compatibility with this 55x98cm flashing. Check that your timber frame is sound and that the roof pitch falls within the product's performance range. Ensure you have appropriate fixings selected for your specific application, as these are not included with the flashing. Review the manufacturer's installation guidance and current site practice recommendations to confirm correct fitting method for your roof type.

• Verify eaves width is minimum 600mm
• Confirm roof pitch compatibility
• Check timber frame condition
• Source appropriate fixings separately
• Review manufacturer installation instructions

Installation and fixings

Installation must be carried out in line with VELUX manufacturer guidance and current best practice. The vinyl-coated polyester construction requires appropriate fixings for your application, which should be selected based on your specific roof type and substrate. Ensure the flashing is positioned correctly to create a complete weather-tight seal, and follow all manufacturer recommendations for fixing spacing and method. Poor installation can compromise the weather-tight performance of the seal.

• Use appropriate fixings for your roof type
• Follow manufacturer installation guidance
• Ensure complete weather-tight seal
• Verify fixing spacing and method
• Work to current site practice standards