Our range of slim-line aluminium casement windows have been designed to withstand the worst of the Great British weather. Stainless steel locking rails compress high performing gaskets for a watertight seal – in weather tests our casement windows remained watertight whilst withstanding air pressure four times greater than the required industry standard (BS 6375).
Fixed frames can be designed to create large span Atrium and Apex windows and opening casements can be fully locked in a ‘Night Vent’ position – providing welcome background ventilation whilst maintaining ‘PAS 24 Security Certified’ protection.
This highly thermally efficient window can be finished with square or chamfered profile – both of which have a modern, contemporary look.
Available in our standard ‘scratch-resistant’ textured finishes or a wide range of alternatives – these windows are made to beautifully complement our range of folding, sliding and entrance doors.
- Slim sight lines
- Superior weather protection
- Modern design
- Solid, Secure, Reliable
We are very pleased with the installation, and will certainly use Green Circle for future projects
Many thanks for our Sliding Doors – they look terrific and the guys who installed them worked very hard
Interesting and reassuring to see the manufacturing process when we visited the first time
On-site everyone was great, particular thanks to Steve who took so much effort to avoid undue mess
Many thanks for a job well done, the finished project exceeded our expectations; we look forward to working with you in the near future on our ongoing project
Your communication was excellent throughout
Beautiful product, professionally and promptly fitted
Brilliant! The installation went really well and the installers cleaned up thoroughly – you’ve given the competition something to aspire to
I would like to say a big Thank You to all at Green Circle, I have over 35 years experience in the construction industry and the Aluminium windows you provide are the best I have come across
Please let Trevor and the team know my client is absolutely delighted with the work you’ve done and the completed project
Your guys turned up on time, looking smart and were very easy to deal with. My client and I would like to thank you all for an excellent job
You were very helpful and patient with us, we appreciated your attention to detail, especially in the fitting stage. Very happy with the end product. Please pass on our thanks to the whole team
Excellent customer service and a brilliant product. Expectations exceeded all round!
We have another six windows and a door to order in the new-year and we will not consider any other supplier. I can recommend Green Circle without hesitation
Many thanks for a job well done. As you know we’re very exposed up here and I’m happy to report that after 2 winters our Bi-Folding doors are working perfectly and have stood up to the test of some very severe weather
We’re very happy with the doors & windows and would like to say a huge thank you for the professional service we received. We recommend Green Circle highly
A big Thank you to Steve & Richard – the installation went without a hitch. Everyone who sees our new bi-folding doors is blown away. Well done to all at Green Circle for making us very happy customers
Professional company with excellent fitters and a high quality product
Quality of works and product fantastic!
We would be delighted to recommend Green Circle as both their service & product was excellent
Excellent product and service – just as we were promised
Very pleased with all aspects of the service
Your wonderful windows will be the ‘Jewel in the Crown’ of our new extension, framing the waterside views
Everyone we dealt with was professional, courteous & knowledgeable. I would recommend Green Circle to anyone
Everything flowed very smoothly. Good all round result. Thank You!
We’re absolutely delighted with our new doors – many thanks to the whole team for a job well done
We were very pleased with the accuracy with which everything was measured and manufactured
The whole experience has been wonderful; kind, caring and patient people giving very sound advice, with a great fitting team to complete the job. Thank you to everyone for our finished doors and windows
In these days when care and attention to detail is brushed under the carpet – it is good to see these old values are still around in Green Circle
Your surveyor and installers could not be more helpful and pleasant during installation. All interactions with the office were friendly and helpful
I’m really pleased with the windows and doors. After having been initially surprised by the price of aluminium frames, I can honestly now say they’re worth every penny
Love my doors
Excellent, professional service from start to fininsh
We were very impressed with the way everything came into place, thank you all for your kindness and efficiency. We would not hesitate to recommend or use you again
Delighted with our new door, your installer Steve did an excellent job
Many thanks for the installation yesterday, which was completed to a high standard. We would also like to compliment the installation team on their polite and obliging manner
Thank you for your attention to detail, the fitting seemed to go very well and the completed job looks very good!
First class installation. This is a company I would recommend as being completely reliable for quality products and service
Great product. Excellent service.
Very pleased with all aspects of the service
Very Happy with the Quality and Workmanship of the Bi-Fold Doors and Windows, Your Installer was very Helpful
We were impressed by the obvious quality of the doors and the care with which they were installed by your skilled and courteous fitters
Your Installers; Steve and Richard were Excellent!
The team is very approachable and cheerful
Green Circle are conscientious, reliable and represent good value in the long term. For these reasons I chose them without hesitation when building my own home
Excellent in all Respects. Efficient and friendly installation and the doors are perfect
We are very happy with the whole process from the first contact to the final fix. Everyone has been very helpful and made us feel valued as customers on a personal level
Thanks for all you have done to make our home look wonderful
A Special Thank you for doing a Great Job, we truly appreciate your professionalism and attention to detail
A first class company with an excellent product – designed and installed by a professional and friendly team. Please pass on our sincere thanks to all involved for making the whole experience such a pleasure