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Energy Efficiency and Historic Buildings - Insulating Pitched Roofs at Ceiling Level (Paperback)
Loot Price: R380
Discovery Miles 3 800
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Energy Efficiency and Historic Buildings - Insulating Pitched Roofs at Ceiling Level (Paperback)
Series: Historic England Guidance
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Loot Price R380
Discovery Miles 3 800
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This guidance note provides advice on the principles, risks,
materials and methods for insulating pitched roofs at ceiling
level. When insulation is placed in this position, the roof is
often referred to as a 'cold roof'. Insulating above the top floor
ceiling is one of the easiest and cheapest means of improving the
energy efficiency of buildings and such work can be carried out
successfully in older buildings if approached with some care. Even
very thick layers of insulation will not cause problems if
installed with materials that are compatible with the existing
construction. However, the installation can be made much more
difficult if part of the ceiling to the top floor rooms is within a
pitched roof space. The installation of insulation at ceiling level
allows high levels of ventilation to be achieved within the roof
space above, either through eaves ventilation or through the gaps
between tiles. This ventilation is extremely beneficial in reducing
the danger of rot within roof timbers and also allowing any
interstitial condensation occurring within the insulation to
evaporate harmlessly away. Its main disadvantage is in restricting
the potential use of the roof space. Installing insulation at
ceiling level is usually possible without any modification to
significant parts of the building. However, it is important that
the significance of a building is not compromised by alterations to
install insulation, such as changing the appearance of the roof
with roof ventilators or removing historically significant plaster
ceilings. Such changes are likely to require consent if the
building is listed. Any change to the external appearance of a roof
in a conservation area may also require permission. In each case
all proposed changes should be discussed in advance with the local
planning authority. This guidance forms one of a series of thirteen
guidance notes covering the thermal upgrading of building elements
such as roofs, walls and floors.
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