Airdrie Retail Park – A New Shop Front Screen
When a new veterinary practice moved into Airdrie Retail Park, the building needed to work...
Why Aluminium Windows and Doors from Century 21?
Century 21 has been manufacturing and installing aluminium glazing systems across Scotland since 1978. Every window and door we produce is bespoke, built to your exact specification using industry-leading systems from Smart, Cortizo and Finstral.
Aluminium is the material of choice for a reason. Inherently strong, corrosion-resistant and low-maintenance, it delivers slim sightlines, superior thermal performance and a lifespan that outlasts almost every alternative on the market.
Fully bespoke to your project
Exceptional durability
Superior thermal performance
Slim sightlines, maximum light
- Colours
- Glazing
- Security
A Colour For Every Vision
Our aluminium profiles are powder coated in any RAL or BS colour, including dual-colour options with a different finish inside and out. From anthracite grey to pure white, the choice is yours.
Anthracite Grey
White
Off White
Grey
Gloss White
Dark Red
Dark Grey
Dark Green
Dark Brown
Dark Blue
Cream
Brown
Black
Any RAL
Glazing That Works as Hard as The Frame
Choose from high-performance double or triple glazing units to suit your project's thermal, acoustic and solar control requirements. Every unit is specified to meet or exceed current building regulations.
Contact Us
Security You Can Rely On
All systems are fitted with multi-point locking mechanisms as standard, with options to upgrade to enhanced security hardware across the Smart, Cortizo and Finstral ranges.
Contact Us
Aluminium Windows Gallery
Manufactured By Experts in Scotland
Century 21 is a Scottish manufacturer – your windows and doors are not outsourced or resold. Every unit is produced in-house from proven aluminium systems, then installed by our own experienced team to the exacting standards we have maintained since 1978.
That means one point of contact from survey through to completion, full accountability on quality, and an installation team that understands the product from the inside out. No middlemen, no compromise.
Systems From Leading Aluminium Brands
We build exclusively from Smart, Cortizo and Finstral aluminium systems – three of Europe’s most respected names in architectural glazing. Each system is rigorously tested for thermal efficiency, structural integrity and long-term weathering performance.
Whether you are replacing windows in a domestic property or specifying glazing for a large commercial development, we will recommend the right system for your brief, your budget and your building.
View our latest projects
Our Process
Step 1
Enquiry
Get in touch with our friendly team and share the details of your project, we're happy to answer any questions and guide you through the next steps.
Step 2
Consultation & Technical Support
During our consultation, we offer technical support and work with the project architect to advise on the best systems for your project.
Step 3
Showroom Visit
Visit our showroom to see our range of products up close, and enjoy a one-to-one consultation to help find the perfect solution for your home or project.
Step 4
Quote
We'll provide a full, detailed quote tailored to your requirements, including survey and installation costs where needed, so there are no surprises.
Step 5
Installation & Aftercare
Our experienced, in-house fitting team will carry out your installation to the highest standard, with ongoing aftercare and advice available whenever you need it.
Frequently Asked Questions
Below we have answered some of the most common queries we receive from homeowners, architects and contractors. If you can't find what you are looking for, get in touch with our team directly.
We manufacture from Smart, Cortizo and Finstral systems - three industry-leading aluminium brands chosen for their thermal performance, build quality and design flexibility.
Yes. Every window and door we produce is bespoke, manufactured to your exact dimensions and project specification.
Century 21 is both a manufacturer and installer. We handle the full process from survey and manufacture through to professional installation.
Yes. Profiles are powder coated in any RAL or BS colour, including dual-colour options with contrasting internal and external finishes.
Yes. Century 21 serves both the domestic and commercial markets across Scotland, from single window replacements to large-scale commercial glazing contracts.
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
Get DirectionsFeatured Products
Aluminium Shop Fronts
Make a lasting first impression with precision-engineered, thermally broken aluminium shop fronts designed for commercial properties of every scale.
Aluminium Curtain Walling
Transform any elevation with floor-to-ceiling glazed curtain walls that flood interiors with natural light and make an architectural statement that lasts.
Commercial Aluminium Glazing Systems
Expert-manufactured aluminium glazing for domestic and commercial properties across Scotland.
Bespoke Aluminium Windows
Precision-manufactured aluminium windows and doors, made to your exact specification by Scotland's glazing specialists.