You don’t need an oversized bay to enjoy aluminium. On a standard window — tilt-and-turn, side-hung or fixed — it delivers the slimmest frames, so more light, in every RAL shade. With a thermal break, it insulates to the level of a high-performance renovation.
The figures that matter when choosing aluminium for an everyday-sized window, not a large bay. Concrete benchmarks, set by our teams.
On a small frame, the thermal break matters even more: the frame-to-glass ratio works against you. A quality insulating strip, paired with double or triple glazing, brings the window up to the level of a high-performance renovation.
On a standard window, narrow frames show instantly: the room gains light and daylight. Aluminium offers the slimmest sections, where PVC has to bulk up to stay rigid.
Tilt-and-turn to ventilate safely, side-hung to open wide, or fixed for a simple source of light. All come in aluminium, even in small dimensions.
Aluminium does not rust, warp or fear UV. Powder coating protects the colour for decades — a window that ages without budging.
The full RAL range in matt, satin or textured finish, and even two-tone: one shade street-side, another inside. A contemporary look on the smallest window.
No paint or treatment to redo. A wash with soapy water once or twice a year keeps the original look, year after year.
* Indicative values for a standard-range thermally broken window. Exact performance depends on the model, glazing and dimensions — confirmed at the survey.
On an everyday-sized opening, aluminium isn’t always the obvious pick. Here, honestly, is where it earns its premium and where PVC stays the smarter call.
It comes into its own whenever you want slimness and a bold style on classic openings. A few cases where it makes full sense:
For crisp-styled windows and RAL shades that modernise a facade, aluminium gives the most refined look, standard sizes included.
On a tall or wide window, aluminium’s slim frames claw back daylight that PVC loses as it thickens. Extra light, guaranteed.
If you’re also fitting an aluminium slider, putting your windows in the same material and shade keeps the facade uniform.
For the best insulation/price ratio on a standard opening, the PVC window stays unbeatable. And for a warm feel inside, take a look at the wood window.
The client wanted to modernise the facade without touching the bay dimensions. We replaced six tilt-and-turn windows with thermally broken anthracite aluminium and double glazing: noticeably slimmer frames, more light and a Uw value meeting the grant requirements.
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« 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 ! »
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On an everyday-sized opening, aluminium wins on slimness and style, PVC on price, wood on warmth. Compare point by point, then open the material that speaks to you.
| Critère | Aluminium windowVous êtes ici | PVC windowVoir la gamme → | Wood windowVoir la gamme → |
|---|---|---|---|
| Indicative price | €€€ — higher | The gentlest | €€€ — premium |
| Profile slimness | The slimmest | Standard, thicker | Intermediate |
| Thermal insulation | Very good (thermal break) | Excellent, natural | Excellent |
| Aesthetics / look | Contemporary, clean | Understated, 40+ shades | Natural warmth |
| Maintenance | Next to none | Next to none | Stain to be redone |
| Durability | 50 years + | 30 to 40 years | Good if maintained |
| Best for | Design style, crisp facade | Renovation, set budget | Charm, old buildings |
Beyond the window: sliders, large bays and glazed facades. See everything aluminium allows in large dimensions.
See the aluminium range →The best insulation/price ratio on a standard opening. Often 30 to 40% cheaper at equal performance.
Compare with PVC →The warmth and charm of wood, perfect in old buildings. Needs a stain refreshed over time.
Discover wood →Glazing accounts for ~70% of performance, whatever the frame. Understand Ug values to equip your aluminium window well.
Choose your glazing →Fitted price ranges by dimensions, glazing and finish. And the share covered by grants.
See aluminium prices →An overview of our window frames & joinery in Belgium: materials, glazing, fitting and grants on one page.
Back to the frame guide →The price depends on dimensions, opening type, glazing and finish. In a standard size, aluminium is paid for mainly for its looks. Here are benchmarks for a fitted aluminium window.
See the detailed aluminium price grid →* Indicative ranges per fitted aluminium window, excluding specific configurations. Itemised estimate provided with your free quote.
It depends on your priorities. On an everyday-sized opening, aluminium’s “large bay” advantage doesn’t apply: the extra cost over PVC is mainly justified by slimmer frames and a contemporary look. If looks matter as much as performance, then yes; if budget comes first, PVC stays the smarter call.
Provided it has a quality thermal break. On a small frame the frame-to-glass ratio works against you, so the insulating strip matters even more. A serious aluminium range paired with good glazing reaches excellent results, in line with grant requirements.
Aluminium is far more rigid: its frames can stay narrow where PVC has to thicken to hold up. On a standard window, that means slimmer edges, more daylight and more light in the room.
All the classic formats: tilt-and-turn to ventilate safely, side-hung to open wide, and fixed for a simple source of light. Each comes in aluminium, even in small dimensions.
The full RAL range, in matt, satin or textured finish, and even two-tone (one shade street-side, another inside). Anthracite and black are the most requested for their contemporary look on a facade.
Grants depend on the performance achieved (Uw value), not the material. A high-performance aluminium window qualifies, depending on your region and income, for a renovation grant and 6% VAT for homes over ten years old. We handle the paperwork for you.
Free on-site survey, grants calculated, a single point of contact. Describe your project in under a minute.