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.
Mill Building Office Radical Retrofit: Heating & Ventilation
Masonry Cavity Wall Construction: Embodied Energy & Buildability
Preventing Overheating – Without the Need for ‘Active Cooling’
Marsden Bungalow Radical Retrofit: It’s a Wrap
Marsden Bungalow Radical Retrofit: The Timber Frame Roof
Marsden Bungalow Radical Retrofit: Timber Frame/ Masonry Hybrid
Can an MVHR system be used for cooling?
Holmfirth Farmhouse Radical Retrofit: Window Detailing
Efficient Building Solutions
Installing Windows in Energy Efficient Retrofits
Why Triple Glazing?
Holmfirth Farmhouse Radical Retrofit: Internal Wall Insulation (IWI) Strategy