Mineral wool is used most often.
Cavity wall insulation materials.
During construction of new buildings cavities are often filled with glass fiber wool or rock wool panels placed between the two leaves sides of the wall but many other building insulation materials offer various advantages and many others are also widely used.
A wall that has had cavity wall insulation installed after construction with refilled holes highlighted with arrows.
They should all be manufactured to british standards.
Cavity wall insulation can be mineral fibre wool polystyrene granules also known as beads or polyurethane foam.
What kind of cavity insulation will they install.
Cavity wall insulation with high efficiency eps beads or glass wool.
If you are looking for a partial fill cavity wall insulation we could recommend celotex rigid pir cavity insulation board or kingspan phenolic cavity board which are covered with aluminium foil facing on both sides have low thermal conductivity and significant r values all resulting in considerable energy savings and acoustic insulation.
Environmentally sound insulation materials.
20 25 per square metre.
Various institutions have investigated this matter and have concluded that the current generation of fibreglass flakes has little impact on the environment.
It s like the mineral quilt insulation used in lofts but broken up into small tufts so it can be blown into the walls.
Glass wool is the most environmentally friendly solution when it comes to cavity wall insulation.
The insulation materials is usually either mineral wool or polystyrene beads but polyurethane foam may sometimes be used instead.
To insulate your cavity walls the installer drills small holes around 22mm in size at intervals of around 1m in the outside wall of your home.