| The answers to the
questions we get asked the most: |
 |
| what is a
cavity? |
| The cavity of a
building is the gap in between the inner and outer walls. This
gap must be at least 50mm to allow cavity wall insulation to
be installed. In 90% of properties the cavity is 50-100mm.
|
|
| how is cavity
wall insulation installed? |
| Insulation material
is blown into the cavity through a series of holes drilled to
a set pattern to allow an even fill. The holes are drilled in
the mortar joints and are sized 22-25mm diameter. Each hole is
blown in turn starting at the bottom. All holes are filled
with matching mortar when finished. |
|
| how long does
cavity wall installation take? |
| Approximately 2-3
hours, depending upon the size and location of the property.
|
|
| is my house
suitable? |
| A full building
survey is carried out to assess the suitability of the
property. This is free of charge. |
|
| do i have to
do anything? |
| It is advisable to
remove any pictures and ornaments from the external walls due
to the slight vibration. The installer will also require
access into garages, outbuildings etc to reach the walls of
the property. They may also require access into neighbouring
properties. |
|
| is there much
mess? |
| There will be some
dust from drilling, which will be cleaned on completion of the
job. It is advisable to move cars from the driveway before
work commences. |
|
| does the
installer come into the house? |
| Checks to the
heating system must be carried out before and after
installation. These checks only take a short amount of time.
|
|
| my house is
semi-detached, how is insulation stopped from entering my
neighbours' house? |
| A cavity barrier is
inserted at the party wall line. This is a quick and simple
process. |
|
| are all
insulation materials the same? |
| There are several
different types of material, but the BBA or BSI must approve
all before they can be used. All materials have similar
insulation values. Whichever material you decide upon, ensure
the manufacturer can offer a 25 year independent guarantee
from CIGA. |
|
| are installers
trained? |
| All senior team
members are fully trained and approved by the System Designer
and BBA. They will carry ID cards to prove this.
|
|
| how do i know
the walls are full? |
| The pattern in which
the holes are drilled ensures that the walls are filled
correctly. The machine used shuts off automatically when the
area is correctly filled. |
|
| how do i know
the installation is the correct density?
|
| The installer will
fill a test box, which is the same width as the average
cavity. The time it takes to fill and the weight when full are
used to calculate if the machine is working correctly. This
procedure is carried out at the start of every job.
|
|
| what about air
bricks and room vents? |
| Vents for fuel
burning appliances must be allowed to operate unobstructed.
Vents for the under floor space of houses must also be free
flowing. All vents are assessed before work starts and sleeved
as necessary if vents are redundant i.e. from old heating
systems or cavity vents these will be sealed up.
|
|
| what about
filling the drill holes? |
| The mortar is mixed
using dye where required to ensure a good match. On pebbled
properties, pebbles will be applied to the holes. After a few
months of weathering the holes will blend in with the existing
finish. |
|
| how do i apply
for my guarantee? |
| JPS Insulation will
apply for the CIGA guarantee on your behalf. CIGA is a
non-profit organisation; its only function is to make sure it
has sufficient resources to meet the promises made in the
guarantee. |
|
| will my home
be warmer? |
| The house will take
less time to heat and hold its heat for longer; therefore your
heating system will not have to work as hard to maintain a
comfortable temperature. |
|
