Cavity Wall

Usual construction for external walls comprising an inner and outer skin of either brick or some form of block with a space of around 2 inches between for insulation. In modern timber framed dwellings, timber framing forms an inner 'skin' then is often clad with an outer skin of brick or similar to give a traditional appearance. Properly constructed cavity walls are more resistant to damp penetration than solid walls and thermal insulation is also higher.