In Belgium, almost no opening is square: an old structure shifts, settles, never has two identical angles. Made to measure is not a luxury, it is the norm. Every window is drawn after a precise survey and manufactured to your exact dimensions — straight, curved or the most complex shapes.
Made to measure is not just about choosing a width. It is a whole process, from the measurement to the fitting. The concrete benchmarks, without jargon.
A technician measures each opening on site: width at the top, in the middle, at the bottom, levels, squareness, wall thickness. As an old structure is never perfectly straight, this survey determines everything that follows.
Full arch, basket handle, bullseye, triangle or trapezoid for attics: made-to-measure manufacturing allows shapes that the standard ignores. We draw the window from the real survey of the bay.
Beyond catalogue sizes, made to measure handles very large bays and unusual heights, with reinforcements and material adapted to the span — where a standard window can no longer keep up.
Glazing bars, astragals (integrated in the glazing or applied), handles, distinct interior and exterior colours, thresholds: every detail is chosen to fit the style of the façade and the existing build.
Double or triple glazing, but also reinforced acoustic, solar control, anti-break-in or frosted for privacy: the glazing is composed opening by opening according to orientation and use.
A window manufactured to your dimensions is fitted to the millimetre: careful air and water tightness, sealing, interior finishes. Fitting by our teams is covered by our guarantee.
* Made to measure applies to every material (PVC, aluminium, wood). The exact lead times and possibilities depend on the chosen material and the complexity of the shapes — confirmed at the site survey.
Made to measure is the norm in renovation, but it has its trade-offs. Here, honestly, is what it brings and what you should anticipate.
In reality, almost all the time in Belgian renovation. A few cases where it is downright indispensable:
Pre-war houses, cottages, apartment blocks: the openings have shifted and are never square. Made to measure makes up for these gaps without touching the masonry.
Full arch, basket handle, round bullseye, triangle or attic trapezoid: only made-to-measure manufacturing restores these shapes specific to heritage buildings.
Off-catalogue bays, unusual heights, paired openings: when the standard no longer suffices, made to measure sizes the window for the required span.
Made to measure is available in every material. For the best insulation-to-price ratio, look at the PVC window; for slim lines and large bays, aluminium.
In a Namur town house, the customer was keen to keep the full arch of the ground-floor bays. After a millimetre survey, we manufactured made-to-measure curved windows with original glazing bars and high-performance double glazing: the character preserved, modern comfort added on top.
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« 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 »
Made to measure is not a material, it is a manufacturing method. Compare its aluminium and PVC versions, then open the range that fits your project.
| Critère | Made-to-measure windowVous êtes ici | Custom aluminiumVoir la gamme → | Custom PVCVoir la gamme → |
|---|---|---|---|
| Indicative price | Depending on material & shape | €€€ — higher | The gentlest |
| Special shapes | All shapes | Very good | Arches & trapezoids |
| Large bays | Depending on material | Ideal | Limited |
| Profile slimness | Variable | The slimmest | Standard |
| Thermal insulation | Depending on material | Very good (thermal break) | Excellent, natural |
| Maintenance | Almost none | Almost none | Almost none |
| Ideal for | Any irregular building | Large bays, design | Renovation, tight budget |
Ultra-slim profiles for large bays and a contemporary style. Made-to-measure aluminium handles oversized dimensions.
Discover aluminium →The best insulation-to-price ratio on everyday openings. Made-to-measure PVC covers everyday renovation.
Discover PVC →The warmth and character of wood, ideal for heritage and old shapes remade identically.
Discover wood →Tilt-and-turn, fixed, hopper: the opening type is chosen opening by opening, made to measure.
See the windows →The glazing accounts for ~70% of the performance. Compose it to measure: acoustic, solar or anti-break-in.
Choose your glazing →An overview of our window frames & joinery in Belgium: materials, glazing, fitting and grants on one page.
Back to the window guide →The price depends on the material, the dimensions, the opening type, the glazing and the complexity of the shape. Here are some benchmarks for made to measure fitted in renovation.
See the detailed window price list →* Indicative ranges per fitted made-to-measure window, excluding very complex shapes. A costed estimate is provided with your free survey.
Because the existing building is almost never square. An old wall has shifted, settled, and two neighbouring openings rarely have the same dimensions. A standard window would leave gaps to fill; made to measure is manufactured to the real surveyed dimensions, for a clean, watertight fitting.
No, the survey is free and with no obligation. A technician comes out, measures each opening to the millimetre (top/middle/bottom widths, levels, squareness, wall thickness) and takes the opportunity to advise on the material, glazing and finishes suited to your project.
Yes. The full arch, the basket handle, the round bullseye, the triangle and the trapezoid for attics are among the common shapes in made to measure. We draw the window from the exact survey of the bay to restore the original shape, glazing bars included if needed.
Allow 4 to 8 weeks in general depending on the material and the complexity of the shapes. As each window is manufactured after your order, to your dimensions, there is no ready-to-fit stock. The exact lead time is confirmed when the quote is signed.
Yes, à la carte. Astragals can be integrated between the panes (maintenance-free), bonded to the glazing or structural. It is one of the great advantages of made to measure: restoring the layout of old windows or personalising the style of the façade.
Yes, exactly like a standard window: the support depends on the performance achieved (the Uw coefficient), not on the fact that the window is made to measure. A high-performance window qualifies, depending on your region and income, for a renovation grant and the 6% VAT rate for homes over ten years old. We handle the paperwork for you.
Free home survey to the millimetre, grants calculated, a single point of contact. Describe your project in under a minute.