Formerly the Green Building Store and now rebranded, 21° helps self builders create a low energy or Passivhaus building with a solutions approach rather than a single product. At 21° we are committed to using a whole house approach to provide better performing buildings from a comfort, cost, and carbon perspective. We supply a range of specialist products and services, including triple glazed timber window, and doors, MVHR heat recovery ventilation, insulation and airtightness products.

With over 30’ years of experience, we’ve worked hard to build a reputation for customer service, integrity and responsibility. We are committed to ensuring that our products are of the highest quality, backed by industry accreditations, and specified by companies at the forefront of energy-efficiency construction. In choosing us, you can rely on expert consultation at every step of your project.