Sheerline for Specifiers

Slim aluminium systems offering class leading performance

Sheerline’s products have been designed from scratch to combine the latest thermal technology and patented construction method to create windows and doors that perform flawlessly, are easy to install and are available in dual colours on short lead times.

Specifier Benefits
Slim Architectural Sightlines

Ultra slim 59mm sightlines of the innovative Classic window system maximises the light flooding into your developments.

Outstanding thermal performance

Sheerlines Classic double glazed windows, with standard high performance glazing have a U-value as low as 1.4 W/(m2K). While our Prestige windows are as low as 1.0W/(m2K) when specified with triple glazing.

Reliable supply on shorter leadtimes

With an integrated system design and our own UK based manufacturing, Sheerline products are available on shorter leadtimes - helping you meet project deadlines - even on dual colour specifications.

Colour range

All our windows and doors are stocked in eight powder coated matt colours, as well as a high gloss white, with the option of choosing a different colour for the interior on standard leadtimes. A further three anodised finishes are available for the ultimate durable and stylish finish.

Fewer remedial issues

A host of features including our patented corner technology and beadless Classic system drastically cut down on remedial site issues.

Faster installation

Our ultra slim Classic system features beadless glazing, saving installation teams time on site - helping you get water-tight builds quicker.

Unique construction

Our patented corner jointing method does away with the need for crimping and specialised machinery, drastically reducing waste and improving quality. Allowing for easy replacement of sealed units on site if required. Larger frames can also be assembled in situ if required.


Our unique Thermlock® closed-cell, insulating chamber, hidden away inside every Sheerline window and door act as a thermal break, creating products with class leading thermal performance.

Sheerline’s cills, ancillaries and corner posts, also feature this same technology coupled with innovative in-built weather sealing that keep draughts and rain safely outside.

No element of the Sheerline system has been overlooked, which helps eliminate any condensation issues caused by cold bridging.

Beautiful corners

Our patented construction method – using threaded screws to bind corners tightly together in perfect unison – allows the Classic system to be beadless, creating perfect run through mitres on internal joints, doing away with the unsightly junctions of square cut beads seen on most aluminium windows.

We’ve also designed out the stepping of misaligned corners, allowing each Sheerline window to be individually hand tuned to improve quality.

Made in Britain
Installation Benefits

Technical Support

Our experienced team of Technical Sales Managers are available to provide guidance and resolve any queries or issues that arise, as well as helping you find the right supply partner for your project.

Get in touch
Find Out More

Please contact us with your project or general enquiries and we’ll be happy to help.                                                        

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