Caltech QC Roofing

Caltech Full Build Up


Caltech QC High Performance Roofing Systems comprise a rapid curing two-component, cold-applied, fully reinforced PMMA waterproofing solution, insulation boards and air and vapour control layers (AVCL). Caltech QC has a proven track record of more than 20 years and is subject to the highest levels of certification and testing. The wet-on-wet application with embedded polyester fleece forms a seamless, durable membrane that is rainproof in just 30 minutes. The system is fully adaptable to meet the individual requirements of every project, including a wide range of colours and optional finishes, for use across all building sectors in both refurbishment and new-build roofing and waterproofing projects.

Key Features & Applications


    • Caltech QC Roofing is suitable for all roof build ups and applications including, overlay, warm, inverted, buried and green roofs.


    • The system is compatible with virtually all roof substrates and is especially designed for overlay of single ply membranes, avoiding the risks, costs and disruption associated with removal.

Cold applied and rapid curing

    • In addition to no risks from hot works, the system can be applied all year round at temperatures down to 0°C with no significant extension of cure times.

Single process application

    • The single process application saves time on site and minimises risk from contamination.

Tough and durable

    • The system is highly durable and significantly increases the puncture resistance of the existing substrate including single ply roofs.

Colours and finishes

    • Caltech QC Roofing is available in 2 standard colours with a range of optional smooth, anti-skid and heavy duty finishes in a wide range of textures and colours, with special colours produced to order

Quick Tip

What other cold-applied options do Alumasc provide?


Euroroof Caltech Liquid Waterproofing is also available. Caltech is a flame-free, single component, self-levelling polyurethane liquid waterproofing solution. Cold applied to form an elastomeric, seamless membrane, Caltech will waterproof virtually any substrate. For more information click here

White House Works, Bold Road, Sutton, St Helens, Merseyside, WA9 4JG