National Museums Liverpool - Roof repair work at Juniper St Building

** Please do not attend site without booking an appointment ** Bidders are asked to submit a formal tender for the "Juniper Street Building 1 Roof Repair Project" NML is looking to appoint a Principle Contractor to complete a package of works to make the building watertight and extend the building life span. The work has been separated into Required work and Desirable work. The reason for this being the Required work is immediate to stop the severe water ingress when the Desirable will extend the building life span. We may not be able to go ahead with Desirable depending on budget restraints. Required • For Roof A & Roof B required work is clean and remove all debris of the gutters before the roof takes place. • Fully remove and re-line gutters with a rolled-on membrane which is then fixed to the abutment under the flashing. This is done with combination of mechanical fixings and hot air welds. The system would include the insertion of liners into the rainwater outlets are heat welded into place. • For Roof B a steel flashing should be used to cover the edges of the new gutter lining. • Replace all the spouts on Roof A & B. • As part of this work to Roof B application of the membrane you will be required to lift the coping stones in order to allow the new gutter lining. • Reduce the parapet ere is parapet between two sections of the single storey roof. • Complete design and install for a compliant safe access system for Roof B Desirable • On Roof A the hip ridges, water seeps through due to the insulation being decayed or lost in some areas. The flashings need to be lifted and the fillers need to be replaced and the flashings re-instated. • Cut edge corrosion repair should be undertaken.