|Main Walls –
if there is effective use of cavity walls
secondary heating – if the boiler needs replacing with a
efficiency condensing one
|Main Roof – if
loft insulation meets recommended level of 8-10 inches
Main Floor – if its insulated
heating controls – if thermostats need replacing or to be
Hot water – check your hot water tank has 150mm thick jacket
whether they are double glazed with low emission glass
||Lighting – if
energy efficiency bulbs are used
It is obvious that new builds and
modern houses will score a higher rating than a period property but that
is to be expected. If you buy a vintage car it is going to be less
economic than a modern one. The Home Inspector will make a list of
recommendations in the report but it is not compulsory to action them.
However, the energy rating may affect the market value of your property.
Replacing and Installing Windows
On average around 10% of heat is lost through windows, however this
percentage may be even higher with single glazing. Double-glazing is the
most effective way of saving energy by halving heat loss.
Low emission glass (Low E) lets in natural heat from the sun but stops
Window Energy Ratings
The new amended version of Part L has been in effect since April 6th
2006 and has been published by The Office of the Deputy Prime Minister (ODPM).
The main amendment to Part L is the introduction of Window Energy
Ratings instead of U values as a criterion for compliance. Window Energy
Ratings accurately indicate the energy performance of a window taking
into account a
number of factors, including useful solar heat gain.
Window Energy Ratings are an integral addition to Part L compliance in
England, Wales and Northern Ireland and are currently being used as a
metric to access the thermal efficiency of a window and its components.
Both glass and framing are assessed for their thermal properties.
Different configurations of windows can then be rated on behalf of
window companies by BFRC - approved simulators to also initial ratings
to be achieved with standard products.
Already, different windows using Pilkington K Glass™ have achieved all
rating bands from basic regulatory compliance (E-rating) all the way to
helping providing a net energy gain to a building (A-rating).
Glass manufacturers such as Pilkington are providing relevant
information on glass thermal properties to allow windows incorporating
Pilkington products (especially Pilkington K Glass™) to be rated.
Because of the association with Energy Saving Trust and the Energy
Efficiency Recommended accolade, many forward thinking window companies
are aiming initially for a C-rated
window product to allow them to carry the EER logo also. More
information at http://www.est.org.uk
D-rated windows provide a lower cost alternative although still above
the minimum for regulatory compliance. B-rated windows allow companies
to differentiate products with superior thermal properties. Currently,
some windows have achieved A-rating status, the first using Pilkington K
Glass™ and Optiwhite in a triple glazed window. Presently, A-rated
windows remain an extremely high cost solution, requiring either high
cost IGU construction and framing for double glazed or utilising triple
glazing technology – none of which are, yet, standard products in the
The Lumen rooflight has been especially made to replicate a traditional
Victorian design whilst providing one of the highest specifications of
glazing available today through incorporating Pilkington Activ – the
world’s first self-cleaning glass.
Replacing and Installing Radiators
Upgrading heating controls will improve your energy efficiency rating. A
Home Inspector will be able to tell if unnecessary fuel is being burned
and wasting money.
It is important to calculate the room’s heating requirements before
deciding on the size of the radiator needed. Cast iron radiators are
highly efficient and therefore spread and retain heat evenly for much
longer periods than modern steel radiators. Reproduction period
radiators are flexible as sections can be added or taken away if the
room is too hot or too cold.
There are a number of modern replica cast iron radiators available,
which can be used in conjunction with other radiators and forms of
heating. Where the installation of traditional wet plumbed systems would
be impractical or cause disruption to the existing building fabric, for
example a wooden floor, ElectRads provide the perfect solution as they
do not require any plumbing.
These modern independent cast iron radiators have a heating element
incorporated, therefore no pipe work is needed and they can be plugged
directly into a standard wall socket or hard wired into your electrical
system. The ElectRad can be installed anywhere as it doesn’t need to be
attached to an existing system and has adjustable temperature settings
(heating output up to 1.5Kw), including a ‘frost protection’ option.