An Introduction to Cavity Walls
Since the beginning of the 20 Century, cavity walls have been used to offer better protection from the elements and reduce the amount of heat lost through external perimeter walls. The construction comprises of two walls separated by a cavity. These walls are ‘tied’ at strategic intervals using various forms of wall tie, commonly made of metal and often coated in bitumen or zinc.
The Issue with Cavity Wall Ties
In the 1980’s it became apparent that the wall ties deteriorated much quicker than anticipated, leading to the requirement of cavity wall tie replacements. According to the Building Research Establishment, ten million homes in the UK may already have this problem – and are yet to be diagnosed.
There are many issues associated with failing cavity wall ties, from horizontal and stepped cracking of the masonry/mortar joints, bulging of the walls, and the possibility of an insufficient number of originalities installed. Cavity wall tie replacement from CavityTech Systems Ltd can prevent the need for future major rebuilding works.