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Since the earlier 1980's all new homes were required to have insulation
as part of the building regulations. If your home was built before
this time then it may not. 33% of heat is typically lost through
walls.
Do you have cavity walls?
Pre 1920's
Older properties have solid wall. If your home was built before
the 1920's then it may not have cavity walls. To check, look at
the pattern of bricks on the outside
[click for example of solid
wall]
Post 1920's
[click for example of cavity wall]
Do you have insulation?
Property age 1981 and later
If your house was built after 1981 then it should have had insulation
added during construction. You can check by looking inside the cavities
from your loft space.
Property age 1920's - 1980's
If your house was built between 1920 and 1980, a previous owner
may have had cavity wall insulation installed. It is easy to check
for this as there will be drill marks on the outside walls
[click for example of filled walls]
Types of insulation:
InstaBead - polystyrene bonded beads - blown into the cavities through
holes drilled into the walls. Holes then sealed
Foam
Rockwell - solid sheets inserted during construction
Waste paper - insulation material made from was paper
Work should be guaranteed for 25 years.
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