Fixing and buying guide

What this product is and who it is for

This is a plastic flashing kit designed specifically for VELUX rooflights. It prevents water ingress by sealing the gap between the rooflight frame and the roof structure. It is intended for builders, roofers, and competent DIY installers carrying out rooflight installations or replacements on pitched roofs.

Compatibility and sizing

The flashing is sized at 134×98cm (52×39 inches) and is designed for use with VELUX rooflights of corresponding dimensions. It is compatible with timber roof structures graded F16, F24 and F36. The flashing is rated for roof pitches up to a maximum of 30 degrees. Check your rooflight model and roof pitch before ordering to ensure compatibility.

• Suitable for timber grades F16, F24 and F36
• Maximum roof pitch: 30 degrees
• Dimensions: 134×98cm
• For use with VELUX rooflights only

Installation and preparation

The flashing features straightforward installation suitable for trade and DIY use. Durable plastic construction ensures long-term performance. Before installation, ensure the rooflight opening is correctly sized and the roof structure is sound. The timber must be in good condition and match the specified grades. Verify roof pitch does not exceed 30 degrees, as the flashing is not suitable for steeper pitches.

• Check rooflight opening dimensions match the 134×98cm flashing size
• Confirm timber grade is F16, F24 or F36
• Measure roof pitch to confirm it does not exceed 30 degrees
• Ensure roof structure is sound and dry before installation

What is included

This is a twin and combination flashing unit in plastic, sized at 134×98cm. It provides the complete flashing solution for sealing around the rooflight frame. Refer to the product packaging and any included instructions for full assembly and installation details specific to your VELUX rooflight model.