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Stand: Q31
  • Aluminium
  • Bi-Fold /Tri-Fold Doors
  • Sliding doors
  • Patio doors
  • Aluminium
  • Bow/bay
  • Casement
  • Fixed
  • Tilt and turn
  • Lanterns

Garnalex is a UK manufacturer of the Sheerline brand of high-quality aluminium window, door and roof lantern systems. Driven by innovation and operating from our vertically integrated, custom-built facilities in Derbyshire we’ve incorporated many new pioneering ideas to create the perfectly matched Sheerline range.

Part-L compliance comes as standard with exceptional thermal efficiency due to our unique Thermlock® technology, offered across a fully suited range of products. With good looks that match perfectly and in-built security as standard.

Creating warm, slim and ultra-secure products combined with unbeatable service levels – Sheerline is the right choice for homeowners, installers and fabricators.

We invite attendees of the FIT Show to stand Q31 to see for themselves what we offer and discover what sets us apart from the competition.


Firs Works
Spanker Lane
Nether Heage
DE56 2JJ
United Kingdom

Contact Exhibitor

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  • Sheerline’s composite door frames combine strength and durability with exceptional thermal performance, all in a style that perfectly matches the rest of the Sheerline range of products.
  • Introduced to complete the Prestige door range and fill the need for a high performance patio – the Prestige Lift & Slide will enable you to offer a premium door that maximises views, perfectly comple ...
  • Flood your home in light with our ultra secure, thermally efficient lantern We have designed the S1 roof lantern from the ground up to meet your every need. We’ve incorporated many new innovative idea ...
  • Open up your home and fill it with natural light We have designed our Prestige bi-folds to offer you the perfect balance of refined looks, exceptional thermal performance and outstanding operation. We ...
  • Exceptional thermal performance combined with refined looks We have carefully designed the Prestige window and door system to combine stylish looks with the latest technical innovation. We’ve incorpor ...
  • We have designed the Classic system from the ground up. Building on years of experience, we’ve incorporated many new innovative ideas; creating a warmer, slimmer and more secure window system. Built a ...
  • Thermlock® Technology

    25 Apr 2023 Sheerline
    Thermlock® v Polyamide, the difference is clear. 
  • Prestige Lift & Slide Patio

    25 Apr 2023 Sheerline
    Slim, Multi-track Patio with Exceptional Thermal Performance.
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