What is a cavity Wall ?
Since the early 1900's many house walls have been
constructed of two masonry (brick or block) walls, with a
cavity (gap) of at least 50mm between. A cavity wall can
generally be recognised by it's thickness (more than 11.5"),
or by the brick pattern. The presence of end bricks in the
face suggests that the wall may not contain a cavity and is
not suitable for cavity wall insulation.
Is my House Suitable for
Cavity Wall Insulation ?
Before the installation, the
installing firm will undertake an assessment of your property
to confirm that it is suitable for insulation. This assessment
may be undertaken by a surveyor or the Technician before
How long does it take?
insulation normally takes around two hours to install, but the
time does depend on the size of the house and other factors,
such as access.
What about filling the holes?
the holes through which the insulation is injected are filled
with mortar to match the existing color and texture as
closely as possible. On pebbledash finishes, pebbles
are added to the surface to match the existing finish. After
weathering, the holes are difficult to see.
How can I find a registered
CIGA maintains a list of
registered installers who can offer the CIGA guarantee. You
can check for installers in your area by clicking
Download info sheet