servicing or replacement. Building Roofs - Ensure that all flat roofs are swept on a bi-annual basis and cleaned. Continually check all waterproofing on roofs and monitor waterproofing membrane. Any deterioration
servicing or replacement. Building Roofs - Ensure that all flat roofs are swept on a bi-annual basis and cleaned. Continually check all waterproofing on roofs and monitor waterproofing membrane. Any deterioration