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THE REQUIREMENTS
The peculiar situation where the waterproofing membrane
is operating in a roof garden or on an underground structure requires
additional properties, compared with the ones exhibited by a common
roofing membrane:
a) absolute resilience to root perforation;
b) resistance to chemical aggressions by acid and alkaline solutions,
salts and fertilisers;
c) resistance to the attack of micro-organisms (such as fungi, bacteria,
moulds, etc.).
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