REMOVE CAVITY WALL INSULATION

The extraction of cavity wall insulation process starts at the bottom of the property and gradually works it’s way up the property.

Firstly, some bricks are removed at the bottom of the property through which the insulation will be removed using an industrial vacuum machine. See photograph 1.

Holes (22mm) are drilled in the walls in an identical pattern to that used to insulate the walls.

Each hole is blocked using a “brush” see photograph 2.

Each brush is removed in turn and pressurised air is blown into the cavity. This breaks up the insulation allowing it to move freely in the cavity. At the same time the industrial vacuum machine is sucking the loose insulation out of the cavity.

This process is repeated hole by hole, moving up the property wall until all the walls are blown and vacuumed.

The cavity is constantly monitored using boroscopes to ensure that ALL of the insulation has been removed.

Once it has all been removed, the bottom of the cavity is manually cleaned removing any rubble and the like.

The holes are then filled using colour matched cement or paint. See photograph 3.

The holes at the bottom of the walls (where the bricks were removed) are filled with a brick sized vent. See photograph 4.

These vents will allow the cavity to breathe and help the wall drying process.

The old insulation is bagged and removed from the property. No waste materials are left behind.