Cavity Wall Injection

The average home loses more than 40% of its heat through the loft space and walls. Of this heat, more is lost through the walls than anything else – approximately 33% in an un-insulated home. Cavity wall insulation is one of the most cost-effective and energy efficiency measures in the home.

If you are concerned about heat loss in your home, a simple survey can be carried out by an insulation consultant who will ascertain where the heat is being lost. 

 Adding cavity wall insulation by injection can usually be done in a half of a day. A series of holes will be drilled into the exterior walls of a property, based on a standard pattern that is known to the installer. The holes are generally drilled along the top of the wall and then underneath any windows or obstructions. The holes created are only about 1 inch across and are positioned around specific joints in the brick work so that when they are being rendered (filled up) there will be no obvious scars. Next the insulating material will be injected into the wall through an air pressured hose.

There are several types of insulation an installer may use:

Blown Mineral Wool - The mineral wool used for cavity wall insulation consists of mechanically granulated spun glass or rock wool, treated with a binder or water repellent during manufacture. Once installed, this type of insulation will most likely last the properties lifetime.

E.P.S Beads - These small Polystyrene beads are produced to a specified size and density which remains unaltered during the installation process. They are combined with a binding agent at the time of injection, so that once injected they set to a water resistant, insulating mass.

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