Cortizo Windows is a specialist network for aluminium and PVC windows for homes, with professional advice, an energy-saving calculator, quote request forms and a store locator.

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Efficient PVC windows - aluminium and PVC windows Cortizo

Factors affecting the thermal insulation of PVC windows

A window separates the outside and inside of a home. Thermal transmittance indicates how much cold or heat passes through the window. It is measured in W/m²K: the lower the value, the greater the insulating capacity.

Frame depth and number of chambers - aluminium and PVC windows Cortizo

Frame depth and number of chambers | Cortizo aluminium and PVC windows for homes

PVC is a material with very low thermal conductivity, so it does not need a thermal break. Here, frame and sash depth are important: the greater the depth and the number of chambers, the stronger the barrier against temperature transfer.

Reinforcements with thermal break - aluminium and PVC windows Cortizo

Reinforcements with thermal break

PVC profiles incorporate reinforcements to give the window rigidity. Removing or replacing them with thermal-break solutions improves transmittance even further, achieving very high insulation levels.

Insulating foams - aluminium and PVC windows Cortizo

Insulating foams

When reinforcements are modified, the resulting cavities can be filled with insulating foams that strengthen the barrier against cold and heat. This solution depends on the system, dimensions and sash configuration.

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Aluminium and PVC windows: useful guidance for choosing well

Choosing aluminium and PVC windows is not only a matter of price. In every home, orientation, climate, outside noise, opening size, façade design and daily use all influence the final decision. Cortizo Windows brings together solutions designed to improve thermal insulation, acoustic insulation, security, natural light and energy efficiency while preserving the character of each project.

Aluminium stands out for its strength, durability, dimensional stability and design possibilities, especially when large openings, slim profiles or highly customised finishes are required. PVC offers excellent insulating performance, low maintenance and a strong balance between comfort and value for home renovation. In both cases, the right choice should take into account the glazing, opening type, installation quality, orientation and the real needs of the household.

Beyond comparing materials, it is useful to define what needs to be improved: reducing energy loss, gaining more silence, increasing security, simplifying maintenance, renewing the appearance of the home or preparing it for more efficient consumption. The Cortizo Windows retail network helps assess each project, identify the most suitable solution and request a professional quotation for replacing windows with a close, project-focused service, without spam or unrelated calls.