The number-one choice for Belgian renovations. Ideal for replacing tired windows on a standard house or flat: excellent insulation, zero maintenance and a controlled budget, even when there are many openings to change.
The numbers that matter for a quality PVC window, fitted by our teams. Concrete benchmarks, not marketing.
Multi-chamber profile (5 to 6 air chambers) with weather seals. Paired with triple glazing, the whole unit (Uw) drops to ~0.8 W/m²K — at the level of a low-energy home.
With asymmetric acoustic glazing, the sound reduction reaches 40 to 45 dB — enough to markedly cut the perceived noise of a busy street or a railway line.
PVC does not rot, rust or warp over time. UV-stabilised, it keeps its colour. At end of life, the profiles are recyclable in a closed loop.
No painting, no treatment. A wipe with soapy water once or twice a year is enough. The hinges can be adjusted without dismantling if needed.
White as standard, more than forty laminated shades (anthracite grey, black, wood tones) and smooth or structured finishes. Lamination on one or two faces depending on the look you want.
Multi-point locking hardware as standard, steel reinforcement in the profile and laminated anti-burglary glazing as an option for the ground floor.
* Indicative values for standard-range profiles. Exact performance depends on the model, glazing and dimensions — confirmed at the survey.
No material is perfect for every project. Here, honestly, is where PVC excels and where you should look elsewhere.
In the vast majority of Belgian renovations, it is the most rational choice. A few cases where it shines especially:
Replacing ageing single or double-glazed windows on an existing house, at the same dimensions: PVC is quick to fit and unbeatable on budget.
Windows and French doors in common sizes, tilt-and-turns: PVC covers 90% of a family home’s openings with no compromise on comfort.
When the whole house has to be changed at once, the price gap with aluminium multiplies. PVC frees up budget for the right glazing or insulation.
For very large sliding bays or a search for ultra-slim lines, turn to aluminium. For a high-end wood interior, see wood-aluminium. We will tell you straight at the survey.
Single-glazed wood windows full of draughts. We fitted 14 anthracite PVC windows in double glazing in three days, with no structural work — the existing dimensions were kept. The renovation grant and 6% VAT were deducted directly from the invoice.
5.0/5 · 5verified reviews
« Nous avons fait appel à la société Wendows pour le renouvellement de nos châssis et nous sommes vraiment ravis du résultat ! Les travaux ont été réalisés dans les délais annoncés et la finition est impeccable. De plus, M. Aprile qui s'est occupé du devis, s'est toujours montré disponible pour répondre à toutes nos questions. Nous vous recommandons donc de faire appel à eux pour vos travaux ! »
« Nous avons fait appel à Wendows pour le remplacement de nos châssis et nous sommes très satisfait de notre choix. Qualité et suivi de chantier au top ! »
« Ik heb via WEndows een raam aangekocht van 2m x 2m. Mijn algemene ervaring is goed. Zeer goeie communicatie, altijs zeer snelle reactie bij een vraag of opmerking. Het installatie team werkte ook zeer efficient. Tevreden van het eindresultaat! Bedankt WEndows »
PVC is not alone in the running. Compare it point by point with the two other materials, then open up the range that interests you to go further.
| Critère | PVC windowsVous êtes ici | AluminiumVoir la gamme → | Wood-aluminiumVoir la gamme → |
|---|---|---|---|
| Indicative price | The gentlest | €€€ — higher | €€€€ — premium |
| Thermal insulation | Excellent, natural | Very good (thermal break) | Excellent |
| Profile slimness | Standard | The slimmest | Intermediate |
| Maintenance | Virtually none | Virtually none | Exterior wood to maintain |
| Aesthetics / look | Understated, 40+ laminated shades | Contemporary, clean | Warmth of wood |
| Service life | 40–50 years | 50 years and + | 40–50 years |
| Ideal for | Renovation, set budget | Large bays, design style | Durable premium project |
Slimmer profiles, ideal for large glazed surfaces and a contemporary style. Pricier, but essential on XXL bays.
Compare with aluminium →The warmth of wood inside, the strength of aluminium outside. Durable premium, when looks matter more than budget.
Discover wood-aluminium →Glazing accounts for ~70% of performance, whatever the frame. Understand the Ug values to equip your PVC windows well.
Choose your glazing →Front doors and sliding bays also come in PVC. Daylight on a grand scale, without blowing the budget envelope.
See PVC doors →Summer comfort, privacy and security alongside your PVC windows. Solar shutters and motorised screens you can control.
Complete with shutters →An overview of our windows & joinery in Belgium: materials, glazing, fitting and grants brought together on a single page.
Back to the windows guide →The price depends on dimensions, the type of opening and the glazing. Here are concrete ranges for fitted PVC — and the share that grants can cover.
See the detailed PVC price list →* Indicative ranges per fitted PVC window, excluding special configurations. A precise, costed estimate is provided with your free quote.
That is a misconception. Modern PVC offers high-performance multi-chamber profiles, elegant laminated shades (anthracite, black, wood tones) and refined lines. On windows of common size, the visual difference from aluminium is minimal.
Better, at equal structure. PVC is naturally insulating whereas aluminium must include a thermal break. At a given budget, a PVC window often reaches better thermal performance. Aluminium regains the edge on slimness and very large dimensions.
White remains the most economical. Dark shades are achieved by UV-stabilised lamination and hold up very well; we adapt the profile and reinforcements because dark colours heat up more. More than forty shades are available, smooth or structured.
High-performance double glazing is the standard and suits most renovations. Triple glazing becomes relevant for a north-facing façade, a noisy street or a low-consumption goal. The PVC profile takes both; we compare the Ug values and the extra cost with you.
Virtually none. A wipe with soapy water once or twice a year is enough. No painting or treatment to plan. The hardware can be adjusted and lubricated occasionally to keep a perfect closure.
Count from around €450 per fitted PVC window in double glazing, depending on dimensions and glazing. Depending on your region and income, a renovation grant (sometimes up to 35%) and 6% VAT for homes over ten years old may apply.
Free on-site survey, grants calculated, a single point of contact. Describe your project in under a minute.