London27 - 29 SEP 2024
Skip to main content

21°  - Sustainability Sponsor

house extension

21°  - Life changing homes

At 21°, we believe you thrive in the places where you experience comfort.

Our new name captures our ambition to create life changing homes, but it's more than just a new logo and tagline. Our mission is to close the industry knowledge gap through a design-led supply chain of products and services to help you, along with your architects, specifiers and contractors achieve the necessary building performance.

We spend the majority of our time in our homes. So, they should be the best they can be - comfortable and healthy to live in, with exceptional efficiency. Combining overarching industry knowledge with specialist expertise, we'll support you in reaching your building performance goals every step of the way.

Windows & doors

Comfort beyond compare...

Our range of high performance windows and doors, have been meticulously designed for ultra low energy and Passivhaus homes. With a slim design to complement your home's aesthetic they still deliver uncompromising performance. Our windows and doors boast exceptional U values with dual compression seals for achieving high airtightness standards, ensuring your home stays warm in the winter, cool in the summer, and effortlessly comfortable all year round.

  • Uvalues as low as 0.71W/m2k
  • Triple glazed as standard
  • Timber or aluminium clad
  • High radiant comfort
  • Dual compression seals for eliminating draughts
  • Tested to the highest levels of weather performance


Breathing life into homes

Mechanical Ventilation with Heat Recovery (MVHR) provides fresh, filtered air that promotes a healthy, comfortable environment for your home and family. The best MVHR system is the one you don't know is there.

Our in-house award-winning design services ensures:

  • Performance guaranteed as designed, supplied and commissioned by 21°
  • Effectively inaudible
  • Draught-free circulation of clean, fresh air
  • Up to 91% heat recovery
  • Extraction of damp and odours

As sustainability sponsor of the National Homebuilding & Renovating Show we'll be available on stand with our key products that help achieve a high performance home. Come and visit our friendly staff who are on hand throughout the show to help on stand G117.

Green Building Store is changing. From 21 March we are 21°

In the meantime visit the Green Building Store website here 



Show Sponsors & Partners

From the producers of