Belgian installer · English-speaking team
Windows & doors in Brussels and Wallonia
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.
4.8/5 · 328 verified reviews
- Free measuring visit at home
- 10-year guarantee
- CSTC-certified fitters
Express quote builder
Reply within 24h
100% free • No obligation • GDPR-protected data
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Areas we cover
From our head office in Overijse, with direct access to the Ring and the E411, we supply and install uPVC and aluminium windows, front doors and sliding patio doors across the Brussels-Capital Region, the Flemish municipalities around Brussels and Wallonia.
Choose your area or municipality to see what's specific about local homes, the postcodes we cover and how our free measuring visit works. And yes, we speak English – from the first call to installation.
Why choose Renov'Châssis
The quality of a Belgian manufacturer, the flexibility of a local craftsman
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.
Direct prices
Save on your renovation by cutting out the middlemen. A transparent quote, line by line.
No reseller margin
Your project, in English
Belgian building rules, listed façades, co-ownership approvals: we explain everything clearly in English, by phone, by email or on site.
English-speaking advisors
EPB certificate
High thermal-performance windows, supplied with the technical data you need for your EPB (PEB) energy certificate.
Technical file supplied
Thermal & acoustic insulation
HR++ double or triple glazing: instant comfort and lower heating bills from the very first winter.
Double or triple glazing
Honest & thorough
A relationship built on trust and transparency
Expert advice, without the jargon
We look at your needs and point you honestly to the right windows for your budget: uPVC, aluminium or wood.
Measurements to the millimetre
A careful, free measuring visit at your home, so there are no surprises on installation day.
Careful installation by CSTC-certified fitters
Respect for your home, protected floors, airtight sealing and a clean site when we leave.
A clear, stress-free process
Your new windows in 5 simple steps
We handle everything, from your first quote to after-sales service.
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1
Free quote within 24h
Describe your project online and receive your priced offer within 24 hours, with no obligation.
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2
Measuring visit
A technician comes to your home to take exact measurements, free of charge.
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3
Made to measure
Your windows are manufactured to the exact dimensions taken at your home.
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4
Careful installation
Our qualified fitters install everything precisely and leave your home clean.
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5
10-year guarantee & after-sales
We remain available after installation for any question, in English or in French.
Not sure about measurements or building rules?
Our advisors will guide you by phone, free of charge, in English.
Recent projects in Belgium
Verified reviews & projects
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!”
ML
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.”
VL
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.”
KB
Kenza B.
Professional client
Your window project in Brussels and Wallonia
Free quote within 24 hours, then a technician comes to measure up at your home, free of charge. We explain everything in English.