A cavity wall refers to a type of construction where two parallel walls are separated by a cavity or gap. This cavity provides a barrier against moisture and allows for improved insulation and ventilation. The cavity wall construction is commonly used in buildings with pitched roofs, and it can be combined with other roofing materials and techniques to create a complete roofing system.
The cavity wall construction typically consists of two layers of masonry or concrete block, with a cavity or gap between them. The cavity can be filled with insulation material to improve energy efficiency and reduce heat loss. It can also be used for ventilation, allowing air to circulate between the inner and outer walls and reducing the risk of moisture buildup or condensation.
In roofing applications, the cavity wall construction can be used to provide added protection against the elements, such as wind-driven rain or snow. It can also help to prevent moisture from penetrating the roof and causing damage to the underlying structure.
Proper installation of a cavity wall construction is important for ensuring the longevity and performance of a roofing system. The walls must be properly aligned and secured, and the cavity must be filled with the appropriate insulation material to ensure maximum energy efficiency and protection against the elements.