5% off PERFORMANCE & ULTRA timber window & door ranges from Green Building Store (on orders placed before 29/06/19).

Green Building Store have extended an exclusive offer for Carbon Co-op members. Those who have accessed this discount have been highly satisfied with Green Building Store’s service and product.
- Triple glazing
- U values as low as Uw: 0.68 W/m2K
- Certified FSC redwood or oak
- Passivhaus-certified option
- 10-year warranty for frame, glazing & paint finishes (see terms & conditions)
PERFORMANCE and ULTRA timber windows and doors offer high performance and cost-effective options for Passivhaus and low energy homes and retrofits.
Listen to our interview in which Aneaka puts member questions to Chris Herring, Green Building Store director.
Huddersfield-based Green Building Store has been manufacturing and supplying high-performance timber windows and doors for over 20 years. They have been at the forefront of introducing Passivhaus products and design into the UK, including construction of the Denby Dale Passivhaus, the UK’s first cavity wall Passivhaus. Green Building Store runs regular Showroom Open Days and FREE Passivhaus & Retrofit Talks at its Huddersfield base.
Members: visit the member area for more details on how to access the discount.
Carbon Co-op members Alan & Monica GBS testimonial:
“We wanted triple glazing because of the comfort benefits of triple glazing, removing the cold down draughts from the glazing. We knew Green Building Store from previous positive customer experience and also through the Carbon Coop, which we had recently joined.
We did extensive research and got prices from 15+ window and door companies and we found that there was nothing to touch Green Building Store on quality or price.
They are great products – beautiful triple glazed wooden windows and doors with top of the range thermal properties. We found the price to be highly competitive – the price was less than any comparable product in any material, and in some cases up to 50% less.
Since we have moved back in we have found the windows and other energy efficiency measures have made a great difference to the overall comfort and warmth of the house through the winter.”
“During the whole of our major house refurbishment Green Building Store was the best company we dealt with, and indeed probably the best company we have ever dealt with in our life.
Their fitting service was great and we would highly recommend them. They turned up on time with everything; fitted the windows expertly; were very knowledgeable and friendly and nothing was too much trouble
Green Building Store’s customer service has been second to none. When we were designing the windows we changed our minds several times about window openings, sizes, colours etc etc. None of that was any trouble. The surveyor came out twice (without charge) to make sure everything was how we wanted it.
Green Building Store have also offered an excellent after sales service. One of the doors was sticking; and it was no problem someone was sent out to adjust it. We were then told that this policy lasted for 10 YEARS – if anything is wrong – we can get in touch.
We have found that everyone – but everyone – at Green Building Store is incredibly helpful and friendly.”
Completed: 2017
Read more: https://www.greenbuildingstore.co.uk/triple-glazed-timber-replacement-windows-for-manchester-retrofit/