
The Ideal Aluminum Dormer: What to Look For?
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Cost estimate for an aluminum dormer
An aluminum dormer is a modern, low-maintenance, and durable choice. This type of dormer is often used in contemporary homes because of its sleek appearance and relatively long lifespan.
Average costs including installation
|
Dormer width |
Indicative costs (incl. installation and VAT) |
|
2.5 meters |
€ 6,500 – € 8,000 |
|
3.0 meters |
€ 7,500 – € 9,500 |
|
4.0 meters |
€ 9,000 – € 12,000 |
These prices include installation and basic finishing, but exclude permits and luxury extras such as blinds or shutters.

What influences the price?
- Material
and profile choice
Aluminum is more expensive than wood, plastic or polyester, but cheaper than zinc. Slim, thermally broken profiles increase the price. - Width and
finish
Larger dormers and luxurious finishes result in higher material costs and more labor. - Placement method
Aluminum dormers are usually custom-made and are often traditionally built, although some prefab variants are available. - Extra
options
Consider integrated blinds, luxury frames, insulation packages and special glass. These options have a direct impact on the price.
Features of an aluminum dormer
- Low maintenance and durable (lifespan approximately 40 – 50 years)
- Slim and sleek profile, modern look
- Good insulation options when using high-quality profiles
- Suitable for those looking for a sustainable and contemporary solution
Comparison with other materials
An aluminum dormer is priced between plastic/polyester and
zinc.
Via platforms such as jeofferte.nl it is possible to directly compare an aluminum
dormer with plastic, polyester or zinc based
on price, appearance and lifespan.
Conclusion
In 2025, an aluminum dormer will cost an average of 7,500 to 9,500 euros for
a 3 meter wide version.
It is a low-maintenance solution with a modern look, suitable for
those who opt for quality and sustainability.
Factors That Influence the Price
The final price of an aluminum dormer is determined by several factors:
- Model: The chosen model (for example, a traditional dormer, a roof extension, or a flat roof dormer) has a major impact on the price. Complex models are generally more expensive.
- Height: A higher dormer requires more material and labor, resulting in higher costs.
- Width: The width of the dormer directly affects the amount of material needed and thus the price.
- Roof pitch: The pitch of the roof can affect the complexity of the installation. Steeper roofs may require additional safety measures, which can increase costs.
- Chosen options: Additional options such as windows (number, type and size), sun protection, ventilation systems, and the finish (inside and outside) affect the total price. Consider:
- Type of glazing (HR++, triple glazing)
- Shutters or screens
- Mosquito nets
- Built-in lighting
- Special finishes (for example, a specific color or structure)
It is advisable to request several quotes and carefully compare the specifications to find the best value for money.
