Precast concrete panels are reinforced
concrete units available in a wide range of mixes, colours and
finishes. Finishes can include acid-etched, smooth or coarse
ground, grit or sand-blasted, rubbed or polished. Mixes designed to
resemble natural stone can also be produced. Highly articulated
designs can be accommodated by the mouldable concrete mix.
- Faster programme times - not affected by
weather or labour shortages.
- Improves buildability.
- Early enclosure of dry envelope enables follow-on trades to
- Produces a high standard of workmanship in factory conditions -
reduces potential for accidents, addresses on-site skill
- Has a high quality finish that can be left exposed - concrete's
thermal properties can be exploited in low-energy buildings.
Precast concrete panels are cast
face-downwards in purpose-built moulds, usually made of either
timber or fibre glass. A steel reinforcement cage is placed in the
mould prior to the concrete being poured. Timber moulds can be
easily adjusted so that maximum use can be made of each basic
mould, further contributing to cost efficiencies.
By inserting mats or rods in the base of the
mould different designs and effects can be created - from false
joints to intricate leaf patterns. Increasingly, maximum use of
off-site fabrication is being made by fixing other elements, from
insulation to entire windows, during manufacture of precast panels.
Once de-moulded, the exposed surface of the unit can be treated in
a variety of ways - acid-etched, smooth or coarse ground, grit or
sand-blasted, rubbed or polished.
Precast concrete cladding
Architectural precast concrete provides
architects with an exciting medium when designing facades for a
wide range of buildings, from healthcare facilities to shopping
malls, commercial office buildings to sports stadiums.
Precast concrete provides:
- Complete thermal protection
- Continuous air/vapour barrier
- Effective rain screens
- Superior lifespan
- Reduced construction schedule and on-site
- High quality control standards
- Numerous finish options and colours
- Keep water out
- Prevent air leakage
- Control light
- Control radiation of heat
- Control conduction of heat
- Control sound
- Resist wind forces
- Control water vapour
- Adjust to movement
- Thermal and moisture
- Structural movements
- Resist fire
- Weather gracefully
- Easy to install
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