Building Materials - External Cladding
Common options for exterior cladding include:
Brick or masonry veneer – slightly higher
initial cost but requires virtually no maintenance, making it more
cost effective longer term
Concrete masonry blocks - provide good heat storage
due to heavy thermal mass. May be painted or plastered. Additional
thermal insulation may be needed in some regions. Must be installed
correctly to avoid moisture ingress to interior. All single skin
masonry requires a waterproof coating.
Autoclaved aerated concrete - available in in
blocks, reinforced panels, and lintels. Good insulation properties.
Not all products are accepted by some BCAs - check before specifying.
Weatherboards - made of timber or composite materials.
Have very good weathertightness properties.In high risk areas, weather
tightness may require a vertical drainage cavity. Some do not need
Monolithic systems - typically constructed of
polystyrene or fibre cement sheet backed by polystyrene thermal
insulation. Extermal surface may be left plain, plastered or textured.
Must be installed strictly to manufacturer's instructions, and the
waterproof coating carefully maintained to ensure watertightness.
Require a cavity in most applications.
Aluminium - such as extruded aluminium weatherboard.
Profiled metal - rareful detailing and workmanship.
Fibrous plaster sheets - needs careful jointing to ensure watertightness.
May be painted or plastered.
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Materials Index | Cladding
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