Windows
As a manufacturer, we design and produce our own double and triple glazed windows to deliver consistent quality, performance and reliability. Built with high-performance frames and advanced glazing, our windows help reduce heat loss, improve insulation and create a more comfortable home all year round.
With options to suit a wide range of property styles, our replacement windows are engineered for long-lasting durability, low maintenance and enhanced security — all backed by expert fitting and careful attention to detail.
Doors
As a manufacturer and installer, we design and supply high-quality doors built for security, energy efficiency and everyday performance. From traditional Composite front doors to modern patio and French doors, our range combines durable materials, advanced locking systems and stylish design to suit all types of homes.
Every door is engineered for long-term reliability, low maintenance and excellent thermal performance, helping to keep your home comfortable, secure and looking great for years to come.
Encloser Window Lock
A high-performance lock solution.
With innovative bi-directional locking technology, the Yale Encloser Window Lock has been designed to fit all uPVC window systems
The Ultion Lock
Stays Locked
When Ultion detects an attack it activates Lockdown Mode. A hidden firing pin in Ultion’s core secures the central cam and stops the intruder being able to open the door.
Composite Doors 'Kick In' Security Video
Our composite doors are designed to deliver exceptional strength and real-world security. As shown in our security testing, each door is built with reinforced cores and advanced multi-point locking systems to help protect your home against forced entry.
Based in Bradford, we manufacture and install high-quality doors for homeowners, Trade & DIY across Yorkshire, including Leeds, Wakefield, Huddersfield, Halifax, Keighley, Harrogate, Skipton and York. Our experienced installation team ensures every door is fitted correctly, providing long-lasting performance, peace of mind and dependable security.
Flush Casement Windows
Our flush casement windows are designed for homeowners who want timeless style without compromising on modern performance. Sitting perfectly flush within the frame, they deliver a clean, elegant appearance while offering excellent thermal efficiency, security and weather resistance.
Manufactured to high standards and built to last, our flush casement windows are ideal for both traditional and contemporary properties, combining classic aesthetics with today’s advanced glazing technology.
Triple Glazing
Our triple glazed windows are engineered to deliver outstanding thermal performance, helping to keep your home warmer, quieter and more energy efficient all year round. With an extra pane of glass and advanced insulating technology, they significantly reduce heat loss and external noise.
Manufactured for modern UK homes, our triple glazing offers enhanced security, improved comfort and long-term savings on energy bills — making it an ideal upgrade for homeowners who want the very best in performance.
Try our NEW Interactive Door Designer
Glasstec have now launched the new interactive online Door Designer so you can now build a better picture of your door will look before you commit to buy.
Customer & Services
