AMJ CTR Ltd, trading as AMJ Contracts Ltd, are PAS 2030:2023 accredited for both Internal Wall Insulation (IWI) and External Wall Insulation (EWI). We have worked in the retrofit sector for many years, gaining valuable experience through the Green Homes Grant and, more recently, delivering whole‑house retrofit upgrades to social housing under the Decarbonisation Fund (Kingston).

AMJ CTR Ltd are members of the Insulated Render and Cladding Association (INCA), the recognised trade association for the External Wall Insulation industry. INCA represents major system designers, specialist installers across the UK, and key component manufacturers — ensuring high standards and best practice across the sector.

AMJ CTR Ltd also specialise in the installation of Diathonite Evolution and associated Diasen components, ensuring correct substrate preparation, reinforcement, and multi‑coat application. As approved installers for Ecological Building Systems, we work closely with their technical team to deliver moisture‑safe, breathable solutions that perform exactly as intended. Our installations achieve the designed thermal conductivity, improving U‑values and reducing heat loss in both retrofit and new‑build projects. By combining natural materials with precise workmanship, we help buildings meet higher energy‑efficiency standards while maintaining fabric integrity and long‑term resilience.

We are passionate about transforming older buildings, and we’re excited to partner with architects who share our drive for high‑performance, fabric‑first retrofit. With a large portfolio of successfully insulated heritage and solid‑wall properties, we know how to deliver Diathonite installations that make traditional buildings warmer, healthier, and more energy‑efficient. We’re ready to bring that experience to many more projects.