Outer Wall Cladding

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πŸ•‘ Reading time: 1 minute. Cladding is the process of layering one material over the other to protect a building from natural elements like wind and rain. It also provides insulation and noise control and boosts the aesthetic appeal of a building. Cladding can be carried out on exterior walls as well as on interior walls. Criteria for Design of Cladding . Criteria for Selection of Cladding Material .

3. Advantages of Wall Cladding

The design of cladding must take account of the following physical and statutory criteria:. The cladding does not carry the weight of the building, but individual bays of cladding must carry their own weight. They must also resist wind loads and impact, both external and internal. All these forces must be transmitted to the structural frame via suitable connections. The connections between the cladding and frame must accommodate any dimensional β€˜lack of fit’ between frame and cladding. This is particularly important when a precisely manufactured cladding system is secured to a reinforced concrete frame, as the frame will be constructed to a lower standard of accuracy.

8. Metal Mesh cladding

The design must also allow for movements: . In the frame – usually deflections, but also creep and long-term shrinkage of concrete. In the cladding – usually induced by changes in temperature or moisture content. The cladding is expected to restrict rainwater and snow. Waterproofing can be achieved in a variety of ways. Cladding systems can generally be divided into three groups: . The material is largely impermeable, and joints are intended to be waterproof.

4. Ceramic cladding

The material is largely impermeable, and the sheets or panels overlap so that water cannot penetrate. Some amount of water penetrates the cladding material or the joints but is controlled within the cladding and channeled back to the exterior. The design of all heated buildings must include thermal insulation. In some systems, it is an integral part of the cladding construction. In others, it may be incorporated in a separate inner lining or sandwiched between inner and outer layers.

9. Solid Surface Cladding

In combination, weatherproofing, insulation, and lining must also prevent or control condensation. This may require vapor barriers and/or ventilation. Specific levels of sound insulation may be required for buildings in noisy environments, such as near airports. Heavy cladding systems possess inherently good noise attenuation.

1. Loads

Lightweight systems can have their sound performance improved by internal linings. Specific fire resistance periods are required for walls near boundaries and escape routes. Fire barriers must be incorporated within voids where cladding passes compartment walls and floors and certain other areas. In many cladding systems, the design criteria can only be met by the outer cladding acting in conjunction with internal linings or backup walls.

The design should also consider the availability of materials, manufacturing lead times, and speed of installation. If a building is to be constructed quickly, the program will be partly dictated by the cladding system chosen.