
Permarock has recently been featured in the North West Fastest 50, following the impressive group-wide success of their parent company, Sustainable Investments Ltd, which secured 11th place in the rankings.
As the group’s external wall insulation (EWI) systems specialist, Permarock supports energy-efficient projects across the UK through high-performance insulation solutions. With over 40 years of industry experience, the company combines proven performance with innovation and quality to deliver a comprehensive portfolio of products and services.
Operating across multiple sectors, including housing, education, healthcare, and commercial construction, Permarock is known for its technical excellence, and reliability. The company’s solutions are ideally suited for both new-build and refurbishment projects, providing exceptional performance, durability, security, and long-term value for clients.

Permarock’s render systems are installed exclusively by a nationwide network of registered installers, each vetted and trained by the company to ensure consistent quality standards. This commitment to excellence enables the creation of attractive, innovative, and energy-efficient buildings that are both functional and visually appealing. With solutions encopasing compliance with the latest Building Regulations and with mineral fibre systems incorporating a range of decorative finishes from through-coloured SiliconeUltra K-finish to brick slips, all achieving an A2,s1-d0 classification for fire performance. Permarock has tailored solutions to meet todays stringent performance requirements.
Permarock has been active in both the refurbishment and new-build sectors for over four decades and their systems contribute to the decarbonisation of homes and public buildings and supporting the transition to net zero by enabling safe, sustainable, and energy-efficient developments at scale.

With a comprehensive approach to technical service and customer support, including tailored specifications, product samples, detailed drawings, budget costings, and dedicated after-sales care, Permarock ensures clients are supported at every stage of their project.
Permarock’s range of external wall insulation BIM content is available to access and download now on Bimstore.
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