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Typical performance comparison

Concrete, brick & block

build cost   £1100-1600/m2
project cost certainty  low
construction time 6-9 months
construction skill level high
U-value 0.3 W/m2K
Air leakage 8-10 m3 /h.m2
Carbon footprint  350-500 kgCO2/m2 
Reuseable components 0-10%



WikiHouse

build cost £1100-1600/m2
project cost certainty  medium-high
construction time  8-12 weeks
construction skill level low
U-value 0.15 W/m2K
Air leakage 1-3 m3/h.m
Carbon footprint  150-250 kgCO2/m2
Reuseable components 80-90%


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The WikiHouse project is 
maintained by Open Systems Lab, a non-profit company 9152368 registered in England & Wales


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