Ukkel
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
100% free • No obligation • GDPR-protected data
Hills, parks and large gardens: Uccle is one of the greenest municipalities in Brussels. Its nearly 84,000 residents live in neighbourhoods that each have their own identity, from Saint-Job to Calevoet, from Stalle to Vivier d’Oie and Fort-Jaco, right up to the edges of the Sonian Forest. Detached villas, terraced houses, blocks of flats from every period: window needs here are as varied as the homes. Whether you own or rent, our team can discuss your project with you in English.
In a house with a garden, replacing the windows often goes hand in hand with wanting a wider opening onto the outdoors. Aluminium sliding patio doors offer large glazed areas with slim frames; uPVC remains a good choice for bedroom and utility-room windows. On the sloping plots common in Uccle, sunlight and the shade from trees vary greatly from one façade to the next, so we adapt the glazing, double or triple, to each side of the house rather than using the same everywhere. An insulated front door often completes the set. For bedrooms facing the garden, tilt-and-turn windows let you air the room safely without opening wide.
Around the local centres and along the main roads, terraced houses and blocks of flats take over. Here the look of the façade matters: in a co-ownership, the rules usually fix the colour and design of the windows, and some properties may be protected. Your commune’s planning department (urbanisme) will advise you on your situation; we prepare a precise description, with colours and frame sections, for your building manager (syndic) or the municipality. If you’re a tenant, the first step is your landlord’s written agreement. In an upper-floor flat, moving large frames is planned at the visit: lift, staircase width, possible access from outside.
Our head office in Overijse is 15 km from Uccle, with direct access to the Ring, and we also work for your neighbours in Drogenbos and Linkebeek, just across the regional boundary. The measuring visit is free: the technician measures up, checks the masonry and shows you the materials and glazing options. You then receive a quote that we can explain line by line in English. For grants and your EPB certificate (PEB), see the section below.
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
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.
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.
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
Brussels' Renolution grants are currently suspended: no application can be submitted for final invoices dated 2025 or 2026, and the Region has not yet decided on a new form of support. Updates are published on renolution.brussels.
The Ecoreno loan can pre-finance renovation work, and Homegrade offers free advice to Brussels residents. Efficient windows generally improve the home's EPB (PEB) certificate, required when you sell or let a property: we provide you with their technical specifications.
Information checked on 17 October 2026.
For a large sliding patio door, aluminium is often preferred: its rigidity allows slimmer frames and therefore more light. uPVC is still possible and highly insulating, with slightly wider frames. The technician will advise you based on the size of the opening.
Yes, many owners go façade by façade or floor by floor. Just choose a model and colour at the start and keep to it for the later stages.
We work the same way on both sides of the regional boundary. Grants differ, though: Renolution (currently suspended) only covers the Brussels-Capital Region, while Flemish support applies in Flanders. Check with the relevant body for your address.
Free quote within 24 hours, then a technician comes to measure up at your home, free of charge. We explain everything in English.
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