Traditionally, exterior walls were protected from rainwater by sealing them with the use of sealants, joints, and barriers. The technology is a solution to loopholes of traditional sealing. The former technique would cause damage to the walls due to excessive movement within the structure, poor workmanship, and degradation of materials. This lead to rainwater penetrating into the interior.
Rainscreen cladding is a new technique to the old problems. In this method, an exterior barrier is fitted or applied to the property’s outer wall. Therefore, the system works as an additional wall to the building. Although the principle of this technique is simple, the science behind how it works is a bit complex.
Mounting light panels construct this system to the specification alloy framework. It is then fastened to your building wall. The panels deflect most of rainwater. In this way, they prevent it from getting to the wall of the building. A cavity between the structural wall and panel is ventilated. It also features air ingress at the base of the system and another at the top. This prevents rainwater from penetrating through the gaps or joints.
During severe weather conditions that can result to floods, it is possible for some amount of rainwater to penetrate through the wall into the cavity. This water will evaporate thanks to air circulation. The remaining water will run down the rear face of the panel. It will then be dispersed through a drainage channel, which is positioned at the base of the system.
Rainscreen cladding systems provide a lot of benefits to the building. They are durable, lightweight, and cheaply available in a broad range of materials. In fact, ventilated facade systems make it possible for buildings to achieve aesthetic goals by utilizing practical construction methods.
The method is relevant for both refurbishment and new projects. The technology has become popular for the large multi-storey buildings. Some of the considerations for building designer include wind loading, structural performance, thermal efficiency, and wind loading. Studies show that constructions that are designed with good levels of insulation have lower levels of carbon emissions and reduced running costs.
All rainscreen cladding systems require care detailing and design. This makes them more expensive as compared to other cladding techniques. However, they are important building longevity and occupant health in wet climates. The technology is advisable in all but the driest region.