What services does Guimapex SRL offer?

We install and replace VELUX roof windows, fit roof lanterns, and install roller shutters, awnings and blinds in Belgium.

Yes. Every quote request is free and without obligation. Describe your project and we reply quickly.

Which municipalities do you cover?

We mainly work in Brussels, Walloon Brabant and Flemish Brabant: Wavre, Waterloo, Louvain-la-Neuve, Rhode-Saint-Genèse and surroundings.

Often yes. When sizes allow, like-for-like replacement limits work on interior finishes.

Depending on the works and municipality. Check with your local authority.

It depends on area and use. An on-site quote sizes correctly.

Conversion · 6 min · 2026-04-01

Tips for daylight and ventilation when converting lofts in Wavre, Waterloo and surroundings.

A converted loft needs daylight and airflow. VELUX roof windows open, ventilate and light without altering the façade.

Distribute openings by floor area and use. Orientation affects sun-protection needs.

Guimapex works in Wavre, Waterloo, Louvain-la-Neuve, Rixensart and across Walloon Brabant.

Is a permit needed for loft conversion?: Depending on the works and municipality. Check with your local authority.
How many windows should I plan?: It depends on area and use. An on-site quote sizes correctly.

A roof window, lantern or shutter project?