Fixing and buying guide

What this product is and who it is for

This is a specialist trimming tool for VELUX roof window installation. It is designed for anyone installing or finishing a VELUX white roof window EBY W20 2000 where an 18mm frame gap needs to be trimmed and sealed neatly. The ergonomic design makes it suitable for extended use, whether you are a professional roofer or a serious DIY enthusiast tackling a roof window project.

Compatibility and sizing

This trimmer is specifically compatible with VELUX white roof windows EBY W20 2000 only. It is designed for use with 18mm frame gaps, so you must measure your frame gap before purchase to ensure compatibility. The 2000mm length is suitable for standard roof window installations of this type.

• Check your VELUX window model is EBY W20 2000 before ordering
• Measure your frame gap to confirm it is 18mm
• The 2000mm length covers typical roof window perimeter requirements

What you get and pre-installation checks

You receive one VELUX Support Trimmer at 2000mm length, manufactured from high-quality plastic with a precision cutting edge. Before you begin work, ensure your roof window is correctly positioned and that the 18mm frame gap is clean and free from debris. Check that all window fixings are secure and that the window frame sits level and square in the opening.

• Inspect the trimmer for any damage before use
• Clean the frame gap of dust, debris, and old sealant
• Confirm the window is level and square in the opening
• Have appropriate safety equipment ready for working at height

Using the trimmer

The precision cutting edge allows you to trim the frame gap neatly and accurately, helping to create a secure fit and prevent gaps from forming. The ergonomic design supports comfortable use during the trimming process. Work methodically around the window perimeter, using steady pressure to achieve clean, even cuts that will help seal and finish the installation professionally.