Sheerframe- The specifier’s choice for commercial UPVC solutions.

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Sheerframe multi-chambered means a five chamber, fully reinforced, totally sustainable, organic stabilised, A-rated, zero carbon window. The BRE (Building Research Establishment) has independently assessed the life expectancy of PVC-U profile to be at least 35 years and that’s what you can expect with Sheerframe.


Sheerframe takes super high-performance windows up to code level 6 of the Code for Sustainable Homes. Sheerframe HED, (Homogenous Energy Dynamics), is the UK’s first zero carbon home compliant PVC-U casement window system. They also meet the requirements of Secured by Design and benefit from the PAS24 Security Kitemark. There is no better system for your home!

Thermlock Reinforcement

Sheerframe also benefits from the revolutionary Thermlock® – patented technology. This provides greater strength, better window security and improved thermal efficiency than traditional reinforcing. This means Sheerframe windows are fully reinforced and exceptionally strong, providing unbeatable security. Importantly, all our products are manufactured using lead-free, calcium organic stabilised technology.

Our Sheerframe team are experts when it comes to PVC-U structural grid systems, giving architects, designers and specifiers a range of high-performance, stylish fenestration options.


The Sheerframe range, including 6000, 7000 and 8000 profiles, hardware and ancillaries has unrivalled experience in thermoplastic extrusion and over 60 years of experience.

Sheerframe is the specifier’s choice and has been used on a wide range of commercial projects including social housing, schools and universities…



Our Sheerframe windows come in a range of styles including: Top reversible, side hung, tilt & turn, top hung and double tilt & turn.

Sheerframe windows and doors come in a range of colours and woodgrain effects, with dual colour available in some combinations.


Designed to endure the unreliable British weather, Sheerframe weatherproofing technology is unbeatable with co-extruded weather seals for water tightness and protection against drafts.


Choose from single residential, French, patio and bi-fold doors, outward and inward opening all designed and manufactured to the same discerning standards.

Sheerframe products have been designed to minimise on heat loss, with u-values as low as 0.8 – even lower when combined with triple glazed units.