Fixing and buying guide

What this product is and who it is for

These flashings are designed specifically for VELUX rooflights and provide the critical weather-tight seal between the rooflight frame and your roof covering. They are essential for any rooflight installation where water ingress must be prevented. The product suits both trade installers and experienced DIY customers undertaking rooflight projects on residential or commercial properties.

Compatibility and sizing

The EBW FK06 0021B flashing is sized at 66cm × 118cm and is compatible with VELUX FK06 rooflights. Before purchasing, confirm your rooflight model matches this specification. These flashings are suitable for timber grades F18 and above, so check your roof structure meets this minimum requirement. The product is designed for roof installations up to 3m high; if your installation exceeds this height, seek alternative products or specialist advice.

• Size: 66cm × 118cm (EBW FK06 0021B)
• Compatible with VELUX FK06 rooflights
• Minimum timber grade: F18 and above
• Maximum roof height: 3m
• Material: Durable plastic construction

Pre-installation checks and preparation

Before fitting, inspect your roof structure to confirm timber grading meets F18 minimum and measure the roof height to ensure it does not exceed 3m. Check that your rooflight model is FK06 size. Ensure you have adequate roof overhang; a 30mm overhang is required for optimal performance of the flashing. Inspect the rooflight frame for any damage and verify that the surrounding roof area is clean and free from debris.

• Confirm rooflight model is VELUX FK06
• Verify timber grade is F18 or above
• Check roof height does not exceed 3m
• Ensure 30mm roof overhang is available
• Clean roof area around the rooflight frame

Weather resistance and durability

The durable plastic construction of these flashings is engineered to withstand harsh weather conditions and provide a long-lasting weather-tight seal. The 30mm overhang requirement is critical to the flashing's performance; this allows water to run clear of the rooflight frame and prevents pooling or ingress. Proper installation with this overhang ensures the flashing performs as designed in demanding roof environments.