Made-to-measure uPVC, aluminium and wood windows with high thermal performance, sold without middlemen and installed under a 10-year guarantee. And our team speaks English, from the first call to the final check.
100% free • No obligation • GDPR-protected data
We handle everything, from your first quote to after-sales service.
Describe your project online and receive your priced offer within 24 hours, with no obligation.
A technician comes to your home to take exact measurements, free of charge.
Your windows are manufactured to the exact dimensions taken at your home.
Our qualified fitters install everything precisely and leave your home clean.
We remain available after installation for any question, in English or in French.
Our advisors will guide you by phone, free of charge, in English.
Proven systems that meet Belgium's strictest thermal standards, built to last and to enhance the character of your home.
7-chamber section
German-engineered insulation and strength
Flush threshold
Panoramic slider with an ultra-slim frame
Multi-chamber thermal break
Structural excellence and enhanced security
4-ply laminated timber
Meranti & solid oak
We look at your needs and point you honestly to the right windows for your budget: uPVC, aluminium or wood.
A careful, free measuring visit at your home, so there are no surprises on installation day.
Respect for your home, protected floors, airtight sealing and a clean site when we leave.
No untraceable generic materials: every window combines CE-certified profiles, glazing and hardware from recognised brands.
VekaGerman quality, 7 chambers
CortizoPanoramic glazing
AlumilPassivhaus & burglar-resistant
Saint-GobainHigh thermal insulation
RotoBurglar resistance
SomfySmart motors
RensonAcoustic trickle vents
Wherever you live in and around Brussels, our team comes to you at no extra cost to measure up and bring your renovation project to life.
Free measuring visit at home
A technician checks technical feasibility on site.
All in English
Calls, emails and site visits in English, with your quote explained line by line.
No middleman margins: you deal directly with the team that designs, adjusts and oversees the installation of your windows and doors, right down to the finishing touches.
Save on your renovation by cutting out the middlemen. A transparent quote, line by line.
No reseller margin
Belgian building rules, listed façades, co-ownership approvals: we explain everything clearly in English, by phone, by email or on site.
English-speaking advisors
High thermal-performance windows, supplied with the technical data you need for your EPB (PEB) energy certificate.
Technical file supplied
HR++ double or triple glazing: instant comfort and lower heating bills from the very first winter.
Double or triple glazing
See how our clients in Brussels, Namur and Liège added value to their homes while cutting their energy use.
Brussels
6 uPVC windows + door
“I had 6 uPVC windows and a front door installed. The result is excellent, and the installation was done in a single day, just as André promised. No more draughts at all!”
Mark L.
Homeowner
Namur
Aluminium windows
“A very good company, responsive and professional. The aluminium windows are beautiful and the difference in thermal insulation is impressive.”
Virginie L.
Homeowner
Liège
Full renovation
“I recommend Renov'Châssis to all my clients. The quality of the products and the reliability of the team are faultless. A partner you can trust.”
Kenza B.
Professional client
Your window quote in 2 minutes
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