Question

Explain in detail about Cavity wall

Answer 1

Cavity walls consist of two "skins" separated by a hollow space (cavity).[1] The skins are commonly masonry, such as brick or concrete block. Masonry is an absorbent material, and therefore will slowly draw rainwater or even humidity into the wall, as well as from the inside of the house as from outside. The cavity serves as a way to drain water back out through weep holes at the base of the wall system or above windows.