VELUX Adjustable middle gutter

Installing peace of mind.

Made in collaboration with installers for an even better installation

Our innovative and patented solution makes roof window combination installations more straightforward. The middle gutter can be adjusted to widths between 100 - 160 mm, ensuring that it always fits to the actual rafter dimensions, providing peace of mind when it’s not possible to obtain exact measurements. It also eliminates the need to create bespoke solutions for each project and brings down the risk of on-site issues.

Add value to projects by installing bigger and better solutions, and bring more of the outdoors in.

Why use the VELUX Adjustable middle gutter?

Gives peace of mindRegardless of the rafter dimensions, you can expect the perfect fit every time. The middle gutter can be adjusted to widths between 100 - 160 mm.

It’s innovative and patentedThe middle gutter has been expertly engineered, its multi-layer drainage system captures and guides rainwater effectively to shield the roofline and ensure watertightness.

Built for all weather conditionsTested extensively at one of the largest wind tunnels in Northern Europe to ensure it protects against the toughest weather conditions.

The new VELUX Pro+ combination flashing set

The VELUX Adjustable middle gutter is included in the VELUX Pro+ combination flashing set, types EKW and EKL. The Pro+ combination flashing set has all you need in one box for a flawless installation.

When ordering, look for the letter M at the end of the product code – this means the VELUX Adjustable middle gutter, insulation collars and underfelt collars are included. For example: EKW MK06 2021M for a side-by side combination.

Underfelt collar and insulation collar explained

Learn more about the features and benefits of the underfelt collar (BFX) and insulation collar (BDX).

Installer man in the process of installing underfelt collar

Underfelt collar (BFX)

More information

Ensures a watertight seal between the window, battens and the roofing underfelt.
A roll of highly durable underfelt tape is included for secure and watertight connection between the BFX elements.
One side of the BFX is now unpleated to ensure that there is enough space for fitting the middle gutter.

Installer man in the process of installing insulation collar

Insulation collar (BDX)

More information

Insulates around the window frame, reducing heat loss and eliminating cold bridges.
Makes it easy to install and insulate the window.
Click fittings to ensure fast and accurate assembly.