Masonry Cavity Wall

Inside out: cavity wall insulation performance

The concept of cavity walls was originally introduced as a mechanism to prevent the passage of moisture into building interiors, with masonry walls consisting of two leaves (or skins) separated by an empty void. While cavity widths were at first extremely narrow, it didn’t take long for construction innovators to recognise the potential to use the space between the two wall skins as a means for insulating the building envelope. 

Fast forward to the 21st century and cavity wall insulation has long been a compliance requirement in the Building Regulations for thermal performance… but when using ROCKWOOL stone wool within wall cavities, specifiers will also benefit from the additional fire and acoustic advantages which the material naturally provides – creating warm, peaceful and safe environments.