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After all the
free and low to medium cost measures have been explored there are other options
for larger projects (see Part 1 and Part 2 for more information).
Larger
energy efficiency projects
These
are more likely to require planning permission or Listed Building Consent so
they are dealt with in more depth below. Opportunities for larger projects to
improve energy efficiency include installing more energy efficient windows,
installing improved insulation and upgrading the efficiency of M&E
equipment, such as boilers.
Looking
at windows in more detail as an example, there are a number of ways the
energy efficiency can be improved; however, in Conservation Areas and Listed Buildings,
these must take into account the impact of any improvements on the historic
value of the building or area. The appearance of historic windows is important
to their context. Replacement of original historic single glazed windows is
unlikely to be permitted in Listed Buildings and will be restricted in
Conservation Areas.
Nevertheless
there are a variety of measures which can improve the energy efficiency of
windows, both where they can be replaced and where they are being retained. Where
windows cannot be replaced, or budget constraints prohibit instalment of new
windows, there are a range of simpler measures which can improve the energy
efficiency of windows.
These
include:
•
Secondary glazing - adding a second sheet of glass or plastic to a window frame
can improve sound-proofing as well as energy efficiency. If carefully designed,
it can be unobtrusive and appropriate in a Conservation Area property or Listed
Building
•
Draught proofing - much of the heat lost through windows is actually through
leaks• Secondary protection - e.g. shutters or heavy curtains, although these are predominantly a night-time option
Other
measures to consider for larger projects include:
• External/ internal wall
insulation - insulating walls can improve the ‘u’ value and minimise heat loss
through walls. However external wall insulation is unlikely
to be permitted in Listed Buildings and in Conservation Areas, but consulting
the local planning office will clarify this
• Upgrading heating system - Upgrading the boiler to an
‘A’ rated system which is 90% efficient will
aid in the reduction of carbon emissions. Replacement of boilers and
radiators do not require Listed Building Consent, but new flues will need consent
as these they must be carefully positioned to reduce the visual impact
Further information can be found at …
http://www.climatechangeandyourhome.org.uk/live/saving_energy.aspx