The benefits of cavity wall insulation

Insulating your cavity walls can:

• reduce heat loss

• lower your energy bills

• reduce the risk of condensation forming on your walls

• reduce draughts

• improve your carbon footprint

Wall insulation is an extra layer that can help keep more heat inside your home. Cavity wall insulation is where material is injected into the space between the two layers that make up your external wall (known as the cavity).

What type of wall do I have?

Before you can insulate your walls, you need to find out what sort of wall you have. Houses in the UK mostly have either solid walls or cavity walls.

If your house was built after the 1920s, its external walls are probably cavity walls. A cavity wall is made up of two masonry walls with a gap in between them. The outer layer is usually made of brick, while the inner layer will be made of brick or concrete block.

Pre-1920 older houses are more likely to have solid walls. A solid wall has no cavity: each wall is a single solid wall, usually made of brick or stone.

Find out more about solid wall insulation.

Some older houses do have cavities in the wall, but these are usually too narrow to insulate. These walls should be treated as if they were solid walls.

Why use eps bonded bead over fibre?

• Outstanding durability – blown beads are rot proof, water resistant and sufficiently stable to remain effective as an insulation for the life of the building.

  
  

• No settlement – as the blown beads are coated with an air drying bonding agent during installation. There is no possibility of settlement occurring. The insulation remains in place for the life of the building ensuring that it is not possible to create gaps at the top of the property.

  
  

• A consistent density of insulation.

  
  

• Constant thermal projection throughout the installed area.

  
  

• No wastage – the beads flow unrestricted, totally filling the cavity, forming a homogeneous heat saving mass.