Established in 1978
Trusted by commercial clients across Scotland for over 45 years of manufacturing and installation expertise.
Your Local Window and Door Showroom in Scotland
Step inside the Century 21 showroom and see our aluminium windows, doors and glazing systems first-hand. Call us or visit to speak with an expert today.
10 Bairds Crescent, Allanshaw Ind Est, Hamilton, ML3 9FD
Glazing manufactured in-house
Every system is fabricated to your exact specification - no third-party assembly, no compromise on quality.
Premium systems
We manufacture and supply only the very best systems and partner with some of the most respected names in the industry.
Scotland-wide coverage
From a single commercial door to a full curtain wall installation, we deliver across Scotland.
Visit our Showroom and See the Quality in Person
Touch the products, explore the finishes and talk to our team before you commit to anything. We’re here to help you make the right decision for your home.
10 Bairds Crescent, Allanshaw Ind Est, Hamilton, ML3 9FD
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View our gallery
Our gallery is the ideal place to browse product photos and find the perfect fit for your next project. If you have any questions, please don’t hesitate to get in touch.
Speak To Our Friendly Team
Choosing new windows or doors is a long-term investment. Seeing profiles, finishes and hardware in person gives you a level of confidence that no brochure or screen can replicate – you can open, close and compare systems side by side.
At Century 21, our showroom is set up to help you make an informed decision. Whether you are a homeowner planning a renovation or an architect specifying for a commercial project, our team will guide you through the options that suit your brief.
Serving Domestic and Commercial Clients Across Scotland
Century 21 has been manufacturing and installing aluminium glazing systems for domestic and commercial clients across Scotland since 1978. Our showroom reflects that breadth of experience – from residential replacement windows to curtain walling and shopfronts.
Whether you are upgrading a family home or working on a large-scale commercial build, our team understands the full scope of what aluminium glazing can deliver. Come in and see the quality of our workmanship for yourself.
What Our Customers Say
We are rated 5.0 onDependable, responsive, quality workmanship and dedication to getting the project completed. Their customer service is second to none. I would...
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Thankerton Builders
via Trustpilot
Ross and the team that carried out our work were fantastic from start to finish. Great communication and fantastic workmanship.
Corrie Deans
via Trustpilot
Great job, and professional company to deal with
Gary Bradburn
via Trustpilot
Very professional Very knowledgeable, delivered on time and fitted perfectly. Will certainly use them again
BSL
via Trustpilot
Great company to use, carried out work for us with no issues at all
DCF Joiners
via Trustpilot
Efficient, competitive and very professional
Paul
via Trustpilot
Dependable, responsive, quality workmanship and dedication to getting the project completed. Their customer service is second to none. I would highly recommend Century 21.
Thankerton Builders
via Trustpilot
Ross and the team that carried out our work were fantastic from start to finish.Great communication and fantastic workmanship.
Corrie Deans
via Trustpilot
Great job, and professional company to deal with
Gary Bradburn
via Trustpilot
Very professional Very knowledgeable, delivered on time and fitted perfectly. Will certainly use them again
BSL
via Trustpilot
Great company to use, carried out work for us with no issues at all
DCF Joiners
via Trustpilot
Efficient, competitive and very professional
Paul
via Trustpilot
4.7 rated on
