What is a Rainscreen Cladding

Rainscreen Cladding Centro Social Tamarguillo de Sevilla

A rainscreen cladding is built on a metal structure, usually made of aluminum or stainless steel, placed and fixed to the supporting wall. It also contains insulation and an open-air chamber. The panels will be fixed to the structure being the siding (wall cladding) of the rainscreen cladding. The open air-chamber allows air circulation, avoiding humidity and condensation. This prolongs the useful life of the building and achieving a great saving in energy consumption.

Benefits of the systems of Rainscreen Cladding

Thermal isolation. The outer layer protects against atmospheric agents, avoiding humidity and temperature drops.

The ventilation chamber offers a break in the thermal bridge that improves energy savings.

Acoustic isolation. It provides a good acoustic insulation, due to the double layer offered by the rainscreen cladding and the intermediate insulators used.

Maintenance cost. According to the material used in the face of the panel, the maintenance can be null, when using self-cleaning and antipollution cements.

Application in almost any building. PANELTOR can be applied both to new buildings or for the rehabilitation of old buildings. This significantly improves aesthetics and energy efficiency.

Paneltor’s contribution to Rainscreen Cladding system

Paneltor offers architects and builders a custom and unique rainscreen cladding. The panels can be manufactured with a multitude of geometric shapes, turns, jambs and lintels.

The panels of Paneltor have thicknesses 10 mm for the hidden system and 7 mm for the rivet and exposed systems. Its standard measures are 3200 x 1200mm, reducing the installation time.

Paneltor, in its hidden fixing system, incorporates a hidden fastening system by inserting stainless steel undercuts in its panels. Undercuts are  inserted during their production, being a global innovation in a thickness of 10mm.

Paneltor is an innovative system, which offers all the advantages of concrete, with fire classification A1. In its siding can reproduce multitude of textures, tones and colors and it is possible to incorporate turns, jambs, lintels and geometric shapes in panels. As a result, a very good rainscreen cladding price and quality ratio with high standards is obtained.

Rainscreen Cladding Price with Paneltor system

The Paneltor rainscreen cladding price ratio is significantly superior to other systems, as panels have a dimension of 3.90 m² and the assembly is quick. The hidden fastening system means that the installation time is reduced drastically, by hanging the panels as if they were pictures. However, contact us to ask about the prices of our panels and systems. They have very competitive prices with relation price – quality.

The rainscreen drainage plane

A rainscreen drainage plane is a separation between the veneer and the weather resistant barrier of a rainscreen. It provides predictable, unobstructed path drainage for liquid moisture to drain from a high point of the wall (where it enters) to a low point of the wall (where it exits) the wall detail. The drainage plane must move the water out of the wall system quickly to prevent absorption and consequential rot, mold, and structural degradation.

A drainage plane

is designed to shed bulk rainwater and/or condensation downward and outward in a manner that will prevent uncontrolled water penetration into the conditioned spaces of a building or structure. In a barrier wall system, the exterior cladding also serves as the principal drainage plane and primary line of defense against bulk rainwater penetration. In cavity wall construction, however, the principal drainage plane and primary line of defense against bulk rainwater penetration is located inside the wall cavity, generally on the inboard side of the air space (either directly applied to the outboard surface of the exterior sheathing layer or, in the case of insulated cavity walls, on the outboard surface of the rigid or otherwise moisture-impervious insulation layer).[12]

A predictable pressure equalization plane

Air pressure difference is one of the dominant forces for driving a rainwater into wall systems.[13] A rainscreen drainage plane that works as a predictable pressure equalization plane creates a separation (an air chamber) between the backside of a rainscreen and the exterior surface of the weather-resistant barrier that is installed on the exterior sheeting of the structural back up wall. This separation allows air contaminated with water vapor from all points in that wall system to exit the interior of the wall system. Moisture laden air that is allowed to pressurize will attempt to move to a lower pressure area that may be deeper into the interior of a wall detail.

Technical considerations

To prevent bridging due to capillary action, Building Science Consulting recommends the drainage plane maintain a cavity of 3/8″ or greater, though smaller cavities with hydrophobic materials can also provide the capillary break.[14] Independently verified testing by manufacturer Masonry Technology Inc. demonstrates that a 3/16″ depth is sufficient for drainage and airflow as well.[15]
Ensure that the drainage plane does not compress when installed so that it maintains an acceptable air space.
Similarly, ensure that the drainage plane isn’t plugged by debris which commonly is present in the form of mortar squeezings or excess stucco. Some mechanical drainage planes include measures to prevent clogging.
Ensure that the drainage plane creates a compartmentalized pressure equalization plane to prevent pressure driven moisture intrusion.[13]
Details at top and bottom terminations of a wall system should accommodate moisture drainage (often termed “weeping”) and air flow to properly dry out the wall.
ASTM International Standards include a standard test for drainage plane systems in EIFS Systems under code ASTM E2273[16] and the International Code Council features a more general “Evaluation guideline for a moisture drainage system used with exterior wall veneers” under code ICC-ES EG356.
Inappropriate rain screen materials may also introduce a risk of fast-spreading external fires