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A roof covering is part of the building envelope. It's the covering on the uppermost part of your building or shelter which provides pro...

A roof covering is part of an building envelope. It's the covering on the uppermost part of an building or shelter which provides protec...

A rooftop is part of your building envelope. It's the covering on the uppermost part of your building or shelter which gives protection ...

A rooftop is part of the building envelope. It's the covering on the uppermost part of a building or shelter which provides protection f...