Renovation
The inverted roof concept can be used to upgrade the insulation level of an existing roof without the need to remove and renew the existing waterproof layer, subject to certain conditions:
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the structure must be capable of carrying the additional load.
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the existing waterproof layer must be sound.
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adequate falls and drainage outlets must be in place.
Adopting the inverted roof systems allows work to continue without interruption and with no need to disturb the building interior.
Both the ballasted inverted roof and the lightweight solutions are suitable for renovation projects: the choice of solution will depend upon the loadbearing capacity of the roof structure and other project requirements.
Always obtain the advice of a roofing specialist, who should inspect the existing roof to confirm:
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drainage.
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falls.
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outlets.
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waterproof layer.
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details.
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penetrations.
