THE FUTURE OF HOME EXTENSIONS Transform your home with a Next Generation Home Extension using the most advanced, energy-efficient building system available, to create a comfortable and affordable living space. Solid roof extensions are fabricated off site and then delivered and erected within two to three weeks, avoiding the chaos and upheaval of having builders on site for months on end. The Solid roof extension provides a spacious, open-plan extension to your home using cutting edge construction techniques. Your new extension will be comfortable and warm with outstanding energy-efficiency with a U-value of 0.10 W/m2K, it is the most energy saving home extension available.