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A rainscreen is an exterior wall detail where the siding (wall cladding) stands off from the moisture-resistant surface of an air/water barrier applied to the sheathing to create a capillary break and to allow drainage and evaporation. The rainscreen is the cladding or siding itself [1] but the term rainscreen implies a system of building ...
Rainscreen cladding is a form of weather cladding designed to protect against the elements, but also offers thermal insulation. The cladding does not need, itself, to be waterproof , merely a control element: it may serve only to direct water or wind safely away in order to control run-off and prevent its infiltration into the building structure.
While these curtain wall systems are more energy-efficient than older, single-glazed versions, they are still significantly less efficient than opaque (solid) wall construction. [13] For example, nearly all curtain wall systems, thermally-broken or otherwise, have a U-value of 0.2 or higher, which is equivalent to an R-value of 5 or lower. [14]
A variant on masonry veneer is the rainscreen veneer. Rainscreens are ventilated at the top and bottom of the cavity to prevent wind-driven rain from being driven into the building by unbalanced pressure. Such systems are typically encountered in areas where blowing rain is a significant concern.
Generally most materials will not remain sealed over the long term and this system is very limited, but ordinary residential construction often treats walls as sealed-surface systems relying on the siding and an underlayment layer sometimes called housewrap. Moisture can enter basements through the walls or floor.
Most exterior veneer systems hang stone from a support wall by pins and anchors allowing air space between, essentially using stone as a rain screen. Anchorage systems are superior for exterior use because they permit any water that permeates the veneer to escape, while air space allows the materials of the supporting substrate wall to expand ...
Water-Managed Wall Systems. Journal of Light Construction March 2003 [18] Residential Ventilation and Latent Loads. Joseph Lstiburek. ASHRAE Journal April 2002, pages 18–21 [19] Moisture, Building Enclosures, and Mold: How water gets into a structure, why it doesn't leave, and how these architectural flaws become HVAC headaches.
Most architectural applications of aluminium in the 1930s were on a monumental scale, and it was another six years before it was put to use on residential construction. In the first few years after World War II, manufacturers began developing and widely distributing aluminium siding.