Fixing and buying guide

What this product is and who it is for

This is a VELUX Standard Flashing designed to seal the gap between a VELUX timber rooflight and your roof structure. It prevents water ingress and weather damage around the rooflight perimeter. The product suits both professional roofers and experienced DIY installers undertaking rooflight installations on domestic properties with timber roof construction.

Compatibility and sizing

This flashing is sized at 94x140cm and is compatible with VELUX timber rooflights installed in roofs with timber grades F16, F24, or F32. Before purchasing, confirm your roof timber grade matches one of these specifications. The 94x140cm size suits smaller to medium rooflight openings. If your rooflight is significantly larger or your timber grade differs, you will need a different flashing size or specification.

• Check your roof timber grade before ordering
• Confirm rooflight size matches 94x140cm dimensions
• PK08 is the product code for this size and specification

Pack contents and material

This product is a single PVC flashing unit measuring 94x140cm. The PVC construction provides durable weather resistance and is designed to withstand exposure to rain, wind, and temperature changes during the life of your rooflight installation.

Pre-installation checks

Before fitting, verify that your roof timber grade is F16, F24, or F32 and that your rooflight opening dimensions are compatible with the 94x140cm flashing size. Ensure the rooflight frame and surrounding roof structure are in good condition and ready to receive the flashing. The flashing must be installed to create a complete seal around the rooflight perimeter to prevent water ingress.

• Confirm timber grade matches F16, F24, or F32
• Check rooflight opening size suits 94x140cm flashing
• Inspect roof structure for damage or deterioration
• Ensure rooflight frame is level and properly positioned before fitting flashing