Fixing and buying guide

Who this product is for

This flashing is for builders, roofers, and serious DIY customers installing or replacing rooflights and skylights on pitched roofs tiled with 94 x 98mm tiles. It is suitable for both new installations and retrofit applications where a watertight seal around the rooflight opening is required.

Compatibility and sizing

This flashing is specifically designed for 94 x 98mm tile sizes. Before ordering, confirm your roof tile dimensions match this specification. The VELUX EDW PK04 2000 grade is the correct specification for this tile size. Using the wrong flashing size will compromise the watertight seal and allow water ingress.

• Check your existing roof tiles measure 94 x 98mm
• Confirm the rooflight frame size is compatible with this flashing type
• Do not substitute with flashings designed for different tile sizes

What is included and pre-installation checks

This is a single tile flashing unit. Before installation, inspect the flashing for any damage or defects. Ensure the rooflight opening is correctly sized and prepared, and that the surrounding roof structure is sound and ready to receive the flashing. Check that all necessary fixings and sealants are available separately if required.

• Inspect the flashing for cracks, warping, or manufacturing defects
• Verify the rooflight opening dimensions match the flashing specification
• Ensure the roof structure around the opening is level and properly prepared
• Confirm you have appropriate fixings and weatherproof sealant on hand

Installation and performance

The flashing must be installed to create a complete watertight seal between the rooflight frame and the surrounding tiles. Proper installation is critical to prevent water ingress and weathering damage. The high-quality plastic construction is designed to withstand external environmental conditions and provide long-term durability. Follow VELUX installation guidance and ensure the flashing is securely fixed and sealed according to the manufacturer's instructions.

• Install the flashing to create a continuous watertight barrier
• Use appropriate fixings and weatherproof sealant as specified
• Ensure the flashing sits flush with the surrounding tiles
• Check for any gaps or misalignment that could allow water penetration