What is a rain screen?

Rainscreen is used to protect the walls of outer buildings from rainwater and other weather damage. By diverting rainwater, the rainwater system protects the building from moisture problems such as wall leaks and roof leaks. Rainscreens usually consist of an outer shell, a ventilated and exhausted air cavity behind the sheath and the waterproof, sealing support wall, which is separated from the cavity. The strength of the rain is reduced by sheathing and the cavity behind it reduces rainwater pressure on the support wall. Ventilation holes in the lining and its generally porous nature allow good air flow into the cavity, which prevents building moisture in the cavity. The air support wall, which is covered with a solid layer of waterproof material, further ensures that the building does not damage the humidity.

There are two types of rain -screen screens and pressure -balanced Rainscreens. The simple rain screen is usually sufficient in areas with low rainfall. This type of rain is ventingN The tiling and support wall is airtight and laminated with waterproof material. The wall base usually has flashing and drain. A good example of a simple rain screen is the veneer of the masonry masonry above the concrete wall of the block.

Rainscreen balanced pressure is more advanced than a simple rain screen and more suitable for areas of heavy rains. The work principle is that when the storm building a storm building, the vents in the mantle allow air to the buffet cavity against the air barrier layer of the support wall. The air pressure accumulates in the cavity and soon this pressure equals the air pressure to the buffering face. As a result of this equalization of internal and external pressure, there is no moisture drawing inside.

Of course, such a pressure leveling works perfectly theoretically than in reality, but the compartment of the cavity can largely help. The sizing of the joints also minimizes the penetration of the rain behind the lining. Is an important bondLine long -term, high -quality sealants and drainage layers on the support wall to prevent the efficiency of the pressure leveling system.

Rainscreens are quite essential in buildings. The screens help the outer walls of the building to remain resistant for a long time and reduce the need for too many repairs. Preventing the disintegration of moisture related, rainscreens also increase the buildings safer.