We’ve changed, for the future. Green Building Store is now 21°
Green Building Store is now 21°
We want to enable you to achieve the best you can in the context of your objectives and resources. We offer our consultancy services to self-builders and their architects.
Discover our range of triple glazed windows, suitable for low energy and Passivhaus homes. We make home a healthier and more comfortable place to be.
Discover our range of inward and outward opening entrance, french, lift and slide doors and Lacuna® bi-fold doors, suitable for low energy and Passivhaus homes.
We're nationally recognised for our expertise in designing, supplying and commissioning MVHR systems for Passivhaus and low energy projects.
We've been supplying pioneering sustainable building products since 1995. Get to know us a little better and our range of specialist products and services.
The Whole House Approach
Airtight Homes & Air Quality: Missing the Point
Why MVHR Commissioning Should be a Breeze
Optimising MVHR systems for health, efficiency, and comfort
Supplier Profile Blog: SALDA
Drying clothes indoors? How to make your home healthier
How to Reduce Condensation in Winter
Sheepridge Passivhaus: A Passivhaus Self-build Home fit for an Architect
Clean Air Day: How Clean is the Air in our Homes?
Sheepridge Passivhaus: Our In-house Construction Team’s Final Project
Mill building office radical retrofit: Materials, Fittings and Furniture
Marsden Bungalow Radical Retrofit: Joining the Two Storeys Together