What is one advantage of using a cavity wall?

Using a cavity wall significantly improves energy efficiency, which is one of its primary advantages. Cavity walls consist of two parallel walls with a space, or cavity, between them. This design creates an insulating barrier that reduces the transfer of heat between the interior and exterior of a building.

During colder months, the insulation helps retain heat within the building, while in warmer months, it prevents excessive heat from penetrating inside. This improved thermal performance helps reduce energy consumption for heating and cooling, leading to lower energy bills and a more sustainable building.

The cavity also offers benefits such as moisture control, as any water that penetrates the outer wall is typically drained away through the cavity, preventing issues like mold and structural damage. While the other options highlight various considerations regarding wall design and construction, the efficiency gained through a cavity wall primarily enhances energy performance, making it a key advantage in modern construction.