wall insulation

Cavity Wall Insulation

If you have cavity walls, rather than solid walls, they can be used as an effective tool for insulating your household. Cavity walls have an outer and inner leaf, made of bricks or concrete blocks separated by an empty space. This gap, or cavity, can be filled with insulating material to improve the efficiency of your household’s heating system. If your home was built after 1920, then it is likely to have a cavity wall, although most houses established since 1995 will already have cavity wall insulation installed.


The purpose of cavity wall insulation is to prevent ventilation through the gap between the outer and inner leaf by filling the cavity with insulant; most commonly mineral wool or polystyrene beads.


Mineral Wool Insulation

Mineral wool has a variety of traits that make it a brilliant choice for cavity wall insulation. Being thermally conductive, dense, water resistant and non-combustible to class B standard, mineral wool has all the performance requirements to safely insulate your home.

Expanded Polystyrene Insulation

These pre-formed beads are combined with a binding agent upon injection into the cavity wall to ensure security and enforce density. With water resistant properties, high density and thermal conductivity, EPS is a high performing insulant.

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