Replacing Window Frames: Wood, uPVC or Aluminium? A Guide to Insulation and Style in 2026

Many Dutch homes are facing another major sustainability upgrade in 2026. Aged window frames allow heat to escape, cause drafts, and lead to higher energy bills. Replacing window frames is therefore one of the most effective steps within an energy efficiency renovation. In cities like Rotterdam—where many pre-war houses still have wooden frames from previous generations—the demand for window frame replacement in Rotterdam is increasing rapidly.

Global Bouw supports homeowners and property managers in choosing the right material and insulation level, ensuring a balance between style, comfort, and energy efficiency.

Wood, uPVC or Aluminium — Which Choice Fits Your Home?

When it comes to window frame replacement, three materials are most commonly used. Each comes with its own advantages:

• Wooden Frames

  Aesthetic and warm in appearance, ideal for classic façades or heritage buildings. They insulate well but require regular maintenance.

• uPVC Frames

  Durable, low-maintenance, and highly suitable for homes that require better insulation. Modern uPVC frames are available in wood-look designs and match both new and existing buildings.

• Aluminium Frames

  Slim, strong, and modern. They let in lots of natural light and remain stable for many years, even with large window surfaces.

Global Bouw advises, for each type of property, which material fits best both technically and visually with the façade and the desired insulation value.

Insulation and Heat Loss: Why HR++ Glass Is the Standard in 2026

A frame renovation almost always goes hand in hand with better glazing. Most households opt for HR++ glass because it can reduce heat loss by up to 60% compared to old double glazing. The result is a noticeably warmer indoor climate in winter and less heat buildup in summer.

For homes with large windows or increased noise pollution, triple glazing is an option. For commercial buildings, this step can also provide immediate savings—especially with rising energy prices.

Why New Window Frames Are an Investment — Not Just an Upgrade

New window frames offer more than just a refreshed appearance:

• lower energy costs due to improved insulation;

• less condensation and fewer moisture problems;

• enhanced security through modern locking systems;

• increased property value;

• greater comfort thanks to reduced drafts and noise.

Combined with HR++ glass, replacing window frames is one of the most cost-effective energy-saving measures.

Subsidies and Financial Support

In 2026, certain types of window frame replacement and insulating glass are partially subsidized by the government. This applies mainly to energy-saving measures that demonstrably reduce CO₂ emissions and improve insulation. Want to know if your home or project qualifies? Feel free to contact us — we will help assess your options.

Window Frame Replacement in Rotterdam, Amsterdam and The Hague

Global Bouw carries out window frame projects for homes, apartments, and commercial spaces. We assess the condition of the existing frame, advise on materials, glazing, and insulation value, and take care of the complete installation. Thanks to precise measurement and fitting procedures, the new frames connect seamlessly to the façade without cold bridges or drafts.

With our experience in urban areas such as Rotterdam, Amsterdam, and The Hague, we ensure that each project is completed quickly, neatly, and with minimal disruption.