The existing roof covering membranes to the North Building are reaching the end of their economic life and require replacement. Some areas of the existing roof have insufficient thermal properties due to the absence of insulation and as part of the roofing upgrade works it is proposed to upgrade the thermal properties of the existing structure through the installation of an insulation layer below the new roofing membrane. In addition, the existing M and E Services infrastructure is in need of upgrading and bringing up to modern standards. The scope of works will also includes the installation of roof membrane/flashing to up-stands/parapets to the roof and refurbishment and replacement of existing rainwater goods as necessary. The removal of existing Asbestos containing materials as identified in Asbestos Survey Report including certified removal and disposal of identified materials or any other materials identified during course of works. The removal of both existing roof lights and removal of existing water tank rooms and the reinstatement of the roof structure and coverings to these areas and introduction of new AOV's above stair cores along with the replacement of a number of existing roof lights. Creation of new window opes in existing lecture rooms and provision of windows to same. Works to an existing Plant Room to accommodate larger water tank/ pumps including upgrade of existing structure and enclosure and the boilers in the existing boiler house are to be replaced along with the requirement to insulate the floor in plant area, also installation of new Air Source Heat Pump equipment to augment and replace existing boiler plant. Removal and disposal of obsolete plant along with removal and re installation of other plant and ducting to accommodate the roof works will be required and involve electrical works. M and E works required to all areas and to allow the removal of water tank enclosures including new water pipework distribution network in first floor ceiling void and associated builders works. Provision of a fall arrest system to the perimeter of roof The works will be undertaken in a single continuous phase which will commence in September