31/01/26

Plastic Windows for Hot Climates and Coastal Areas

In conditions of heat and high humidity, window structures must meet special requirements. Let’s review the key criteria for selecting plastic windows for such regions.

1. Profile: Thickness and UV Protection

Mandatory reinforcement (steel insert, 1.5 mm) to resist thermal deformation.

UV stabilizers in the PVC composition — prevent yellowing and brittleness from sunlight.

2. Insulating Glass Units: Heat Reflection

Multifunctional glass with silver coating: reflects up to 60 % of infrared radiation, reducing indoor heat gain.

Low‑E coating — allows light transmission while blocking heat.

Double‑glazed unit (3 panes) filled with argon — optimal for hot climates.

Unit thickness: at least 32 mm.

3. Hardware: Corrosion Protection

Choose rust‑resistant hinges and locking mechanisms 

Must have anti‑corrosion coating — critical for coastal areas with salty air.

4. Ventilation: Balancing Temperature and Humidity

Micro‑ventilation mode — ensures constant airflow without drafts.

Ventilation valve — regulates air exchange, preventing condensation.

For maximum protection against dust and insects — mosquito nets with fine mesh.

5. Additional Solutions

External roller shutters — block heat before it reaches the glass.

Inter‑glass blinds — do not collect dust and protect from sunlight.

Tinting or reflective films — reduce brightness but may darken the interior.

6. Installation: Considerations for Coastal Areas

Use silicone sealants with UV protection — resistant to moisture and UV rays.

Ensure waterproofing of joints — prevents penetration of salty moisture.

For ground‑floor installations — fine‑mesh mosquito protection (against sand and insects).

Conclusion:
For hot climates and coastal areas, the following are essential: thick profile with UV stabilizers; multifunctional insulating glass units; corrosion‑resistant hardware;well‑designed ventilation system.

The right choice will reduce air conditioning load, protect against humidity, and extend the service life of windows by 15–20 years.