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at junctions within the house. When
a SAP assessment is combined with
Build Aviator’s estimating service, the
material list will be incorporated into
the assessment calculation using the
U-values of the materials to give a more
accurate representation of the energy
efficiency of the building.
Part E/Section 5/ Technical
Booklet G
Part E is also split into two parts, E1
isn’t relevant to self-builds, as this
focusses on the protection of noise from
adjoining buildings, however, Part E2
needs to be a consideration as this looks
at sound travel within a dwelling.
Part E2 requires that the house
should be constructed in such a way
that provides reasonable resistance
to sound. These requirements can
typically be met by using materials
offering airborne sound insulation of
40dB, which are elements like a 100mm
masonry wall or single timber stud wall.
Nevertheless, when you’re working with
your project manager or construction
manager, make sure you consider that
40dB won’t cover things like surround
sound which is commonly around
110dB. Also consider those noisy items
like washing machines, ventilation
systems and hot water pumps which
To showcase that a building complies
with regulation requirements, Dwelling
CO2 emission Rate (DER) and Dwelling
Fabric Energy Efficiency (DFEE) rates
are calculated, and both must meet or
exceed the TER and TFEE.
The DER and DFEE rates are calculated
using a SAP assessment. This SAP
assessment calculates likely energy
costs for space, water heating and
lighting per square meter, along with
the CO2 emissions of the property
producing a score of between 1-100,
the higher the number, the more energy
efficient the dwelling is.
A SAP assessment must only be
carried out by a qualified SAP assessor.
Build Aviator - specialists in building
compliance support and estimating,
offer a SAP assessment service that
includes Registered Construction
Details to help designers and
contractors minimise thermal bridging
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can be a noise nuisance, so look for
products that have a low dB or ones
identified as silent.
Acoustic insulation can be an
option, but it isn’t the only way of
soundproofing, adding mass or isolation
can often provide the same acoustic
mitigation (ensuring there are no voids
in wall or floors).
An acoustic desktop study is often
invaluable for locating any sound issues
in building designs and recommending
measures for improvements, including
specification alterations.
Build Aviator offers an acoustic desktop
study in conjunction with LABC (Local
Authority Building Control). The
desktop study assesses the design
drawings and material specifications,
to assist self-builders in achieving
internal sound standards that not
only go beyond minimum building
requirements but also meet their
specific housing needs.
To find out more about the
compliance support services Build
Aviator offers, visit
www.buildaviator.co.uk