In a new construction project, the question of windows arises very quickly. Choice of material, type of opening, standard or customized dimensions… every detail matters to ensure comfort, brightness, and compliance with energy regulations. Let’s look at the essential points to consider when selecting windows for a new house. Nothing is left to chance in this field where innovation and technical requirements are constantly evolving.
Which materials should be prioritized for windows in new builds?
The choice of material directly impacts the style, longevity, but also the thermal performance of the window. Today, four main categories dominate the new construction market: PVC windows, aluminum, wood, and mixed (combining several materials).
Each option has its own specificities, influencing price, ease of maintenance, and energy efficiency. Focusing solely on design would therefore be a mistake; it is better to compare the concrete advantages of each solution as you can do by consulting the different offers of windows for new construction.
Why choose PVC windows?
PVC windows are attractive for their excellent value for money and minimal maintenance. Their smooth surface makes regular cleaning easy, and they also offer good thermal insulation to easily meet the requirements of RT2012 or other recent standards.
Another advantage concerns the variety of available shapes: curved, panoramic, or classic, these windows easily adapt to contemporary as well as traditional house projects. Acoustic insulation is also a strong point often highlighted.
The design and slimness advantage of aluminum windows
Loving natural light often involves large bay windows or openings. Aluminum windows perfectly suit this desire thanks to the slimness of their profiles, maximizing the glazed area. This brings a modern and bright aspect to the architecture.
Robustness, remarkable longevity, and absence of corrosion also characterize these models. Today, there are versions with thermal break to prevent any heat loss, thus guaranteeing insulation compliant with energy regulations.
Wood windows and mixed solutions: authenticity and modernity combined
Choosing wood windows means opting for a warm and authentic atmosphere. Wood naturally offers high thermal performance and allows for custom-made designs, ideal when openings exceed standard dimensions.
For those who want to mix tradition and innovation, mixed windows (alu/wood, alu/PVC, wood/PVC) bring the best of each world. You then benefit from the elegance of wood indoors and the robustness outside thanks to aluminum or PVC, while optimizing durability and ease of maintenance.
- PVC windows: economical, easy to maintain, good insulation.
- Aluminum windows: slim lines, wide range of colors, ideal for large bay windows.
- Wooden windows: natural charm, custom work, excellent thermal insulation.
- Mixed windows: versatile, successful blend of design, durability, and comfort.
Types of opening and standard dimensions to consider
The choice of opening mode determines air circulation, ergonomics, and even interior layout. Architectural trends encourage innovation, but some practical principles remain essential.
Thinking from the design phase about how each room will be ventilated or arranged often helps decide among the variety of available systems.
Casement, French or sliding: what to choose?
The casement window remains the most common in new construction. Easy to use, it guarantees optimal ventilation and fits all types of walls. The French opening, with sashes tilting inward, is also attractive for its practicality.
As for the sliding window, it is suitable where space must be limited: kitchen, room opening onto a terrace, veranda… This system allows large glazed surfaces and harmonizes particularly well with aluminum windows.
Choosing the right dimensions for maximum comfort
In new construction, respecting standard dimensions simplifies installation and reduces manufacturing times. The 115×100 cm format is, for example, very common for a single window. Double sashes often measure 135×120 cm.
That said, custom-made windows may be necessary to optimize light or add a particular charm. Be careful to anticipate the impact on budget and on the possibilities for installation in new builds — sometimes lintels will need adapting or special casings must be planned.
| Type of opening | Advantages | Disadvantages |
|---|---|---|
| Casement / French | Effective ventilation, accessible to all, compatible with all rooms | May obstruct nearby furniture, takes up interior space |
| Sliding | Space-saving, large widths possible, modern look | Less effective ventilation, sealing needs monitoring |
Thermal insulation, glazing and regulations for installation in new construction
Complying with the RT2012 energy regulations requires paying particular attention to the thermal insulation of exterior joinery. This involves the quality of the frame, the continuity of the seal, but also the choice of glazing.
Manufacturers are competing in ingenuity to offer triple seals, anti-condensation technologies, and specialized profiles for new installation. Investing in high-performance joinery improves comfort while limiting the energy consumption of the home.
Single, double or triple glazing: which to prioritize?
Single glazing now belongs to the past in new construction. Double glazing is almost systematic to provide an effective barrier against cold and external noise. Reinforced variants (double glazing with enhanced insulation) further optimize performance.
Triple glazing finds its place in very low-energy houses or in regions exposed to harsh climates. However, be careful: its higher cost and weight can make installation more delicate and influence the choice of window material.
Requirements of RT2012 and standards to comply with
The RT2012 regulation sets minimum thresholds concerning the Uw coefficient (overall thermal transmission of the window). To understand:
- Uw ≤ 1.6 W/m².K to benefit from certain energy aids.
- Solar factor Sw adapted according to the orientation of the glazing.
- Obligation to integrate a certain percentage of glazed surface according to SHON (new habitable surface area).
These standards aim to limit heat loss in winter and summer overheating — a balance facilitated by the judicious choice of the glazing’s Ug coefficient and a high-performance frame. New installation, thanks to adapted rebates and careful integration into external insulation, maximizes the success of the project.
Frequently asked questions about windows for new construction
What are the differences between PVC, aluminum, and wood windows for a new house?
PVC stands out primarily for its attractive price and reliable thermal insulation performance. Aluminum is especially appreciated for its strength, slim profiles that maximize natural light, and contemporary look. As for wood, it offers a warm appearance and very interesting natural insulation. Mixed windows combine the advantages of several materials, merging exterior robustness with interior aesthetics. A summary table helps clarify:
| Material | Main Advantage | Maintenance |
|---|---|---|
| PVC | Value for money, effective insulation | Very low |
| Aluminum | Sleek design, durability | Low |
| Wood | Natural aesthetics, insulation | Medium to high (periodic varnish or paint) |
| Mixed (alu/wood, alu/pvc) | Combination of qualities of both materials | Low to medium depending on composition |
What are the essential steps for a successful new installation?
For new installation, several key steps must be respected:
- First, check the plumb and level of the masonry reveals.
- Precisely integrate the window frame into the thickness of the insulation.
- Ensure continuity of seals to avoid any thermal bridge.
- Make the waterproofing adjustments and install the exterior cladding if necessary.
When all these operations are carried out carefully, the window fully benefits from its thermal and acoustic insulation characteristics.
Which glazing choice to comply with current energy regulations?
Since RT2012 and current standards, double glazing with enhanced insulation has become the standard. It combines a good Uw coefficient, limited heat loss, and controlled solar gain. In some cases, especially in cold areas, switching to triple glazing becomes relevant. Here are some examples of recommended values:
| Type of glazing | Uw coefficient (W/m².K) | Recommended use |
|---|---|---|
| Classic double glazing | 1.4 – 1.6 | All temperate exposures |
| Enhanced double glazing | 1.1 – 1.3 | Increased insulation needs |
| Triple glazing | < 0.9 | Cold regions, passive houses |
How to choose between standard and custom dimensions for your windows?
Standard dimensions reduce costs and ensure a realistic fit to the most common plans. They facilitate manufacturing, delivery, and on-site installation. Opting for custom sizing is justified when you want to utilize every corner of a wall, enhance brightness, or work with a specific architecture. Before any order, precisely assessing the functional and aesthetic needs of the building helps avoid costly mistakes and guarantees perfect harmony with the façade.
