Fixing and buying guide

What this product is and who it is for

This is a slate roof flashing system for VELUX roof windows measuring 55×118cm (CK06 2000 size). It is intended for professional installers and experienced DIY customers undertaking new build construction or refurbishment work where a roof window needs to be weather-proofed on a slate roof. The flashing creates a secure seal between the window frame and the slate tiles, preventing water ingress whilst maintaining the aesthetic of your slate roof.

Compatibility and sizing

This flashing is designed exclusively for VELUX roof windows and Sun Tunnel systems in the CK06 2000 size (55×118cm). Before ordering, confirm your roof window model and size match this specification. The flashing is engineered for slate roof applications only and is not suitable for other roof coverings such as tiles or felt.

• Window size: 55×118cm (CK06 2000)
• Roof type: Slate only
• Compatible with VELUX roof window and Sun Tunnel systems

What is included and pre-installation checks

This is a complete flashing system with all necessary installation products included, reducing the need to source additional components on site. Before installation, ensure your roof structure is sound, the slate roof is in good condition, and the opening dimensions match the CK06 2000 specification. Check that the roof window frame is ready for fitting and that you have adequate access and working space on the roof.

• Complete kit with all installation products included
• Verify roof window size is CK06 2000 (55×118cm)
• Confirm slate roof is structurally sound and in good condition
• Ensure adequate roof access and working space for installation

Installation and performance

This flashing system is engineered for professional installation standards and is suitable for both new build and refurbishment work. The system is designed to perform reliably in typical UK roof conditions, providing a weather-tight seal that protects against water ingress whilst maintaining visual consistency with your slate roof finish. Installation should follow VELUX guidance and building regulations for roof window installations.