Morden Mount Primary School Icopal Noxite NOx Depolluting Roof

Morden Mount Primary School

The school had experienced many leaks over the years but six roofs continually caused disruption to the school. At the request of the school and Greenwich Borough Council, Capital Roofing was asked to carry out a full survey of the roofs in question.

They identified some areas that required extensive alterations and some asbestos removal to skylights and water tank glass enclosures on two of the roofs.

Problem

The water-tank enclosures comprised vertical wired-glass panels which served no real lighting purpose. The panels extended right down to the existing roof covering meaning upstand detailing would be problematic.

The School Head was also keen to use eco-friendly products when possible. With this in mind Capital Roofing asked Icopal to visit site to provide a roof waterproofing specification, and to design a tapered insulation scheme

Solution

The overlay specification to the existing asphalt surface used Icopal's Profiles Vapour Vent XL vapour control layer, Thermazone Torch-on insulation, and Profiles Vent XL underlay.

The system was finished with Icopal's Eco-Activ® Noxite® Mineral Capsheet. Tapered insulation was installed to 70% of the insulated roof area to increase thermal performance and provide positive falls for efficient roof drainage. Due to the increase in height, kerb details were raised. The glass panels around the water tanks were removed and replaced with a new PVC cladding, allowing the detail to be properly waterproofed.

Twenty-one skylights were replaced with new units, and new guttering was installed where required. Icopal's Elastoflex liquid- applied waterproofing system was used in small areas adjacent to the existing hall windows due to the type of vertical panels originally installed. This allowed a better seal to be created to the panels, where membrane installation would have been tricky to detail.

The School Head was absolutely delighted with the works and finish, and the project was carried out to programme and to budget. Richard Perrett, Surveyor for Greenwich Council, commented ‘I was very impressed with the quality of workmanship carried out on this project. Having read more about the Noxite® capsheet and having seen the appearance, I would not hesitate to recommend this product on future projects’.

Summary
Project: Morden Mount Primary School
Location: Greenwich, London
System: Noxite® Eco-Activ® capsheet and Profiles System
Client: Greenwich London Borough Council
Contractor: Capital Roofing Co Ltd, Blackheath
Area: 1,600m²
Completion: September 2012
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