Rainscreenjärjestelmä

Rainscreenjärjestelmä, often referred to as a rainscreen system, is a building construction technique designed to manage moisture and improve thermal performance. It creates a ventilated air gap behind the exterior cladding. This gap allows any water that penetrates the cladding to drain freely, preventing it from reaching the building's structure and insulation. The system typically consists of an exterior cladding material, a drainage plane (such as a weather-resistant barrier), and an attachment system that creates the air gap.

The primary function of a rainscreen system is to protect the building from water damage. By allowing water to drain and ventilate, it reduces the risk of rot, mold, and structural degradation. The ventilation aspect also helps to dry out the wall assembly, further enhancing its durability. In addition to moisture management, rainscreen systems contribute to improved thermal performance. The air gap can act as an insulating layer, reducing heat transfer and potentially lowering energy costs for heating and cooling.

Rainscreen systems are employed in a wide variety of building types, from residential homes to commercial and institutional structures. The choice of cladding material can vary greatly, including wood, metal, stone, brick, and composite materials. The effectiveness of the rainscreen system depends on proper installation, ensuring that all components are correctly integrated to create a continuous drainage and ventilation path. It is a recognized method for enhancing the longevity and performance of building envelopes.