Frequently asked questions about sliding windows

When choosing sliding windows, similar questions often arise. That’s why we’ve compiled clear answers about materials, insulation, and installation, so you can make well-informed decisions for your home. Can’t find what you need right away?

Insulation and energy

How well do sliding windows insulate against cold and heat?

Modern sliding windows offer good thermal insulation thanks to high-efficiency glass and well-sealing profiles. They limit heat loss in the winter and help keep the indoor temperature more pleasant in the summer, which contributes to living comfort and energy consumption.

Are sliding windows as well insulated as fixed windows?

Sliding windows today insulate much better than before. Although fixed windows are technically a little easier to make completely airtight, high-quality sliding windows offer a very good level of insulation for everyday living comfort.

Do sliding windows affect the EPC value?

Yes. Well-insulated sliding windows can contribute to a better EPC value, especially when they replace old or poorly insulating windows. They are part of the total insulation package of the house.

What is high-performance glass (HR++ glass)?

HR++ stands for high-performance double glazing, consisting of two panes of glass with an insulating cavity in between. This cavity is filled with a noble gas, such as argon, which significantly improves the insulation value of the glass.

Is triple glazing useful for sliding windows?

Triple glazing insulates better than double glazing due to three panes of glass and two insulating cavities. With sliding windows with large glass surfaces, this can further contribute to better insulation and a lower EPC value.

It is especially interesting for well-insulated homes, such as new builds or thoroughly renovated homes where the roof and walls are also up to standard. In older homes, double glazing often already offers a major step forward in comfort and energy consumption.

Keep in mind that triple glazing is heavier. The sliding window profile and fittings must be adapted to this, especially with large sliding windows. The price is also higher, although any premiums may partially offset the difference. Proper ventilation remains important to avoid condensation and moisture problems.

Are soundproof sliding windows really noticeable?

Yes. Soundproof sliding windows make a clear difference, especially for homes on a busy street or in a noisy environment.

Thanks to adapted glass compositions and well-sealing sliding window profiles, disturbing noise from outside is significantly reduced. This allows you to enjoy more peace and comfort indoors, without sacrificing light or views.

Materials and appearance

In which materials are sliding windows available?

Sliding windows are available in PVC, aluminum and wood. Each material has its own look, insulating properties and maintenance level.

What is the difference between PVC and aluminum sliding windows?

PVC sliding windows are maintenance-friendly and budget-conscious. Aluminum sliding windows have a slim profile, a modern look and are particularly durable, making them suitable for large glass sections.

How long do PVC, aluminum and wooden sliding windows last?

With correct maintenance, sliding windows last for many years. PVC and aluminum sliding windows are durable and maintenance-friendly, while wooden sliding windows require more maintenance but offer a warm look and good insulation. The lifespan depends on use, placement and weather influences.

In which colors and finishes are sliding windows possible?

Sliding windows are available in a wide choice of colors and finishes, so that they perfectly match the style of your home.

Which sliding windows are the most maintenance-friendly?

PVC and aluminum sliding windows require the least maintenance. Regular cleaning is usually sufficient to keep them in good condition. Wooden sliding windows require more maintenance, but remain a beautiful choice for those who value a natural look.

Renovation and installation

Are sliding windows suitable for renovation and new construction?

Yes. Sliding windows are always custom-made and are suitable for both renovation projects and new-build homes.

What is the installation process for sliding windows?

The installation is carried out carefully and with attention to detail. Correct installation is essential for insulation, safety and ease of use.

How long does it take to install a sliding window?

The duration depends on the dimensions and the situation on site. In many cases, the installation is smooth and within a limited time frame.

Use and experience

Do sliding windows provide sufficient ventilation?

Sliding windows contribute to natural ventilation when opened. For a healthy indoor climate, a good ventilation system remains important, especially in combination with well-insulating windows.

Are sliding windows suitable for large window surfaces?

Yes. Sliding windows are particularly suitable for large window surfaces and let in a lot of natural light. They provide an open feeling and a smooth transition between inside and outside.

Are sliding windows comfortable in daily use?

Yes. Sliding windows are designed for smooth and comfortable use, even with large window surfaces. They open and close smoothly and take up little space, which makes them practical for daily use.

Safety

Are sliding windows secure against burglary?

Modern sliding windows are equipped with solid closures and can be fitted with safety glass. In combination with correct installation, they provide a reliable and safe feeling in the house.

Can sliding windows be extra secured?

Yes. Depending on the situation, extra security options can be provided, such as customized locks or safety glass.

Price and advice

What determines the price of a sliding window?

The price depends on the material, dimensions, type of glass and finish. Large window surfaces and specific wishes can influence the cost price.

Is a sliding window a good investment?

Yes. Sliding windows provide more light, extra living comfort and an open feeling, which contributes to the appearance and value of your home.

Can I get advice on choosing sliding windows?

Yes. InstaWindow is happy to guide you in choosing sliding windows that suit your home, use and budget. You can count on clear and honest advice.

Is personal advice without obligation?

Yes. You can always contact us for honest and clear advice, without any obligations.

Request free advice and discover which windows or doors best suit your home.

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