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Durham Lane Primary School

Stockton-on-Tees

Client
Stockton-on-Tees Borough Council
Project
New Build
Sector
Education
System categories
Bitumen Waterproofing Systems, Cold Liquid Waterproofing Systems
Accredited installer
Barclay Roofing
Flat roof with four white square rooflights on dark membrane surface, residential area with houses and trees visible beyond.

Systems in use

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Challenges

For funding purposes, the roof area was inspected and separated into two phases. Phase 1 of the roofing works presented a number of potential fire risks with combustible substrates and penetrations. The existing make-up performed poorly when tested against current building regulations.

Grey flat roof surface with visible panel joints, surrounded by green trees, grass field, and sports court fencing in background.
Dark grey flat roof with visible seams and drainage channels, overlooking residential area with red brick houses and tiled roofs.

Solutions

Following minor remedial works, the existing waterproofing system was inspected and deemed suitable for use as the air and vapour control layer. Thermal and acoustic upgrades were introduced through the installation of Hytherm MW mineral wool insulation, ensuring building regulation compliance and an acoustically sound teaching environment in compliance with BB93.

To complete the installation, Hyranger reinforced bitumen waterproofing system was installed, achieving a 20 year insured guaranteecovering waterproofing system materials supplied by Axter. In accordance with the NFRC’s Safe2Torch guidance, cold applied liquid waterproofing was required for detailing to fire risk areas; in this instance, Starcoat R was the system of choice due to uniform aesthetical finish and cost efficiency.