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.

Practical guide

Windows according to your home orientation

Home orientation affects direct sunlight, indoor temperature, ventilation and comfort. A north-facing facade does not need the same priorities as a south-facing facade or a west-facing room.

PVC: internal chambers and frame depth

PVC windows also differ from one system to another. As a general rule, a PVC window can improve its thermal performance when it has more internal chambers and greater frame depth, provided the glass, gaskets, profile design and installation also support the system.

  • More internal chambers can help reduce thermal transmission through the profile.
  • Greater frame depth usually allows more complete systems and better insulation.
  • The real comparison should be between complete systems, not material alone.

Why orientation matters

Orientation helps decide whether to prioritise thermal insulation, solar control, airtightness, ventilation, glass specification or external protection.

North-facing facades

North-facing rooms often need more attention to heat loss and limited sunlight. Insulated profiles, low-emissivity glass, effective seals and careful installation are important.

South-facing facades

South-facing rooms receive more sunlight. Insulation may need to be combined with solar control, especially in warm regions or with large glazed areas.

East and west-facing facades

East receives morning sun while west can accumulate heat in the afternoon. West-facing rooms may benefit from stronger solar-control measures.

Noise, wind and real use

Orientation is only one factor. Street noise, prevailing wind, building height, shutter box, opening type and room use also matter.

Moving forward without deciding everything

You do not need to choose the system from the start. Leave your details and a Ventanas Cortizo network store can guide you.

Related guides

Does orientation change the window choice?

Yes. It can make thermal insulation, solar control, ventilation or overheating protection more important.

Which orientation usually needs more solar control?

South and west-facing facades often need more solar-control attention, especially with large openings.

Do I need to know the exact orientation?

No. You can request guidance even if you do not have every detail yet.

I would like to be contacted

Home orientation affects direct sunlight, indoor temperature, ventilation and comfort. A north-facing facade does not need the same priorities as a south-facing facade or a west-facing room.

I would like to be contacted