Fixing and buying guide

What this product is and who needs it

This is an interior frame trimmer component for VELUX pine roof windows. You need this product if you are installing or replacing a VELUX EBY W35 3000 window and have an 18mm gap between the window frame and your roof structure. It is essential for both new timber-framed building installations and retrofitting projects where precise frame adjustment is required to achieve a secure, weather-tight installation.

Compatibility and sizing

This trimmer is compatible exclusively with VELUX EBY W35 3000 pine roof windows. It is engineered to accommodate exactly 18mm frame gaps. Before purchasing, measure the gap between your window frame and the surrounding roof structure to confirm it is 18mm. The adjustable design allows customisation to suit your specific installation requirements, but it is not suitable for different window models or alternative gap sizes.

Pre-installation checks and preparation

• Verify your window model is VELUX EBY W35 3000 and confirm the frame gap is 18mm
• Inspect the window frame and surrounding structure for damage, rot, or misalignment before fitting
• Ensure the roof structure is level and properly supported
• Check that the natural pine finish is undamaged on arrival
• No additional treatment or finishing is required; the trimmer is ready to install as supplied

Installation and securing

Position the adjustable trimmer into the 18mm frame gap between your VELUX window frame and roof structure. The adjustable design allows you to customise the fit to your exact installation requirements. Secure the trimmer firmly to ensure a weather-tight seal and prevent movement. The natural pine construction provides durability and a finished appearance that matches your VELUX EBY W35 3000 window frame, eliminating the need for additional finishing or decoration.