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Cavity Wall Insulation 

This is the most cost-effective way of reducing heat loss in the home after loft insulation. Up to 35% of the heat lost in an average home is lost through the walls.  

Badly insulated walls lose more heat than any other part of your home and could be costing you up to an extra £200 a year in energy wastage. Cavity wall insulation is a simple solution which can reduce heat loss through the wall by up to 60%.

Cavity walls are common in the majority of homes built after the early part of the 1930s. You can tell if your home has cavity walls by measuring the thickness at any door or window. Cavity walls are at least 300mm (12 inches) thick and are comprised of an outer and an inner layer separated by a small air gap.  Following a survey and quote, we will complete the work in less than a day from the outside of the house, with minimal disruption and no mess.

To insulate a cavity, we drill 22mm holes in the mortar between the bricks (this minimises any damage to the bricks themselves) at regular intervals along the wall.   We then inject "white wool" into the cavity using a special blowing machine.  "White wool" is spun glass mineral fibre that has feels and looks much like cotton wool.  The material is inert and no chemicals are involved in the process.

We then fill the holes with mortar, leaving the wall much as we found it.  

The whole process only takes 2-3 hours and is covered by a 25-year CIGA guarantee.