Frequently asked questions
Why is there condensation in my patio door?
The best way to prevent condensation is to control the amount of humidity in your house. Adequate ventilation and good air circulation are normally sufficient to solve this problem.
The chart below indicates the relationship between the exterior temperature and the level of humidity inside. If you could reduce the amount of humidity inside to the level indicated below, this could help to resolve the problem of surface condensation.
Exterior temperature /
Maximum level of inside humidity
- 30 °C / 15%
- 30 °C à - 25 °C / 20%
- 25 °C à - 18 °C / 25%
- 18 °C à - 12 °C / 30%
- 12 °C à - 5 °C / 35%
- 5 °C à + 5°C / 40%
For whom?
An exclusive partner of door and window manufacturers, Résiver completes its product line with patio and garden doors of the highest quality in PVC, aluminium and wood.
This is how Résiver meets the expectations of its client manufacturers and develops its business network.
If you are a consumer and are interested in one of our products, click on the ''contact'' tab for more details.
