Do you think a roof is just protection from precipitation? Its role is much broader. It creates a cozy microclimate inside the building, influences the structure’s durability, and is closely related to the safety of residents. One key factor that is often overlooked is under-roof ventilation. It is what ensures the balance between temperature and humidity, preventing serious problems both in winter and summer.
Roof ventilation principle
The very idea of ventilation under the roof is based on one simple physical law – hot air rises. If it is not released, it accumulates, creates condensation, and damages the structure. Roof ventilation eliminates this problem by providing constant air circulation between the attic space and the outside environment. Streams of incoming air displace moist and warm air, carrying it outside through special ventilation ducts.
The main element of such a system is the roof exhaust fan, installed in the upper part. It works either on natural draft or with an electric drive. Due to the constant movement of air, the roof “breathes”, maintaining the microclimate in the norm regardless of the season.
Blauberg, a German brand with an impeccable reputation in the industry, offers professional solutions for organizing effective ventilation in roofing systems. The brand’s products are thoughtful engineering solutions confirmed by tests in independent laboratories, as well as elegant design, precise specification calculations, and confidence in quality.
Consequences of insufficient air flow into the roofing system
Many people underestimate the impact of stagnant air under the roof. But without constant air exchange, a whole range of serious problems arise there.
Here are just a few:
- Condensation. Due to the temperature difference, moisture settles on the inner surfaces of the roof, gradually destroying the materials.
- Mold and mildew. Increased humidity in a closed, poorly ventilated space is an ideal environment for the growth of mold and fungi. These microorganisms can harm wood and other construction materials, trigger allergic reactions in the home’s residents, and produce unpleasant smells.
- Insulation damage. A wet thermal insulation layer loses its properties, and the roof stops retaining heat.
- Roof deformation. Without proper ventilation, the roof is subject to temperature changes, resulting in the expansion and contraction of materials. These processes lead to microcracks and potential loss of the coating’s tightness, which can cause leaks and require expensive roof repairs.
- Increased heating costs. Heat loss through the roof directly affects bills during the cold season.
Thus, problems that may seem trivial eventually turn into major repairs and financial losses. It is crucial to take these risks into account and invest in a well-designed roof ventilation system to ensure the longevity of the structure, maintain a healthy indoor environment, and ultimately save on costly repairs and energy bills.
