Comparison of PVC, aluminum and wooden windows for the Spanish climate

The choice of window material in Spain directly impacts home comfort and air conditioning costs. Let’s explore how different materials perform under the Spanish sun and which option is best for your region.

PVC Windows – A Versatile Solution

PVC windows lead the Spanish market thanks to their excellent thermal insulation and reasonable price. A high-quality profile protects against heat in the summer and retains warmth in the winter, which is especially important for central regions with their variable temperatures.

Modern PVC profiles can withstand the intense sun of southern Spain without fading or warping. The material contains UV stabilizers that protect windows even in Andalusia, where the sun shines 300 days a year. The multi-chamber structure of the profile acts like a thermos – keeping your home 5-7 degrees cooler in the summer without additional air conditioning.

PVC is especially suitable for coastal areas. Salt air and high humidity do not damage plastic, unlike metal or wood. Windows don’t need to be painted or treated with protective compounds—washing them a couple of times a year with plain water is sufficient.

In southern regions, it’s best to choose white or light gray profiles, as they heat up less in the sun. Dark colors are attractive but can warp slightly from overheating, especially on the south side of the house.

The average cost of PVC windows is €250-€450 per square meter, including installation. With minimal maintenance, they last 40-50 years.

Aluminum Windows — for Large Spaces

Aluminum has traditionally been popular in Spain, especially in modern homes with panoramic windows. Thin, durable profiles allow for large glazed surfaces that won’t sag or warp over time.

The main feature of aluminum is its thermal conductivity. Simple profiles without a thermal break are only suitable for the mild climate of the Canary Islands or unheated spaces. Residential buildings require systems with a thermal break—a special plastic insert inside the profile that interrupts the transfer of heat and cold.

Aluminum is weather-resistant. Temperatures of 45°C in the shade, as found in Seville or Cordoba, have no effect on the profile. The material does not rust or fade, and looks as good as new after 20 years of use. This is especially important for seaside homes, where salt and moisture quickly deteriorate other materials.

Sliding aluminum systems are the ideal choice for accessing a terrace or garden. The sliding mechanisms can withstand intensive use and the weight of large double-glazed windows. Unlike PVC, aluminum doors can be made up to 3 meters high without the risk of sagging.

Prices for aluminum windows start at 400 euros per square meter for systems with a thermal break. Premium profiles with improved insulation cost up to 700 euros per square meter.

Wooden Windows – Naturalness and Warmth

Wooden windows are chosen by those who value eco-friendliness and a special atmosphere in their home. In the northern regions of Spain, where the climate is more humid and cool, wood thrives better than on the Mediterranean coast.

Modern wooden windows are made from laminated veneer lumber, which resists deformation from humidity and temperature changes. Hardwoods such as oak, meranti, and sometimes specially treated pine are suitable for the Spanish climate. All windows are treated against insects, fungus, and UV radiation.

Wood provides excellent thermal insulation, comparable to PVC. A home with wooden windows creates a comfortable microclimate – the wood “breathes” and regulates humidity in the room. This is especially noticeable in stone houses, where excess moisture can be a problem.

The main disadvantage of wooden windows in Spain is the need for regular maintenance. On the Mediterranean coast, sun and dry air dry out wood, so the protective coating needs to be renewed every 5-7 years. In Galicia or the Basque Country, the problem is the opposite: high humidity requires more frequent inspections of windows and anti-rot treatments.

Wooden windows start at €500 per square meter and can reach €1,000 for premium wood species with high-quality hardware.

What to Choose for Different Regions

The Mediterranean coast, with its hot summers and mild winters, is well-suited for all types of windows. PVC will provide better heat protection, aluminum allows for larger open spaces, and wood will require additional sun protection.

Central Spain, with its cold winters and hot summers, requires good thermal insulation. PVC windows or aluminum with a high-quality thermal break perform best here. Wooden windows are also suitable, but will cost more for the same performance.

The North Coast, with its humid Atlantic climate, presents the most challenging conditions for windows. PVC is ideal here because it’s moisture-resistant. Aluminum performs well when properly sealed. Wood requires the most careful maintenance and regular treatments.

Combination Windows – the Best of Both Worlds

More and more manufacturers are offering combination systems. Wood-aluminum windows combine the warmth and beauty of wood on the interior with the practicality of aluminum on the exterior. These windows require no external maintenance and last for decades.

PVC-aluminum is a more affordable combination window option. The PVC profile provides insulation, while the aluminum trim on the exterior protects against weather conditions and gives the windows a modern look.

Combination solutions start at €600 per square meter, but their durability and minimal maintenance justify the investment.

Final Recommendations

For most homes in Spain, PVC windows remain the optimal choice in terms of price, quality, and energy efficiency. They are suitable for any climate and require no special maintenance.

Aluminum windows are a good choice for modern homes with large glass surfaces and sliding systems. Be sure to choose profiles with a thermal break for living spaces.

Wooden windows are suitable for those willing to pay more for a natural look and a unique atmosphere. Factor in regular maintenance costs into your budget.

When choosing windows, pay attention not only to the frame material but also to the quality of the glass unit and hardware. Even the most expensive profile won’t protect you from the heat if you install ordinary glass without a solar control coating.