Our Fully Matched Range

Built as a truly integrated system, with shared aesthetics and thermal performance

Designed to Work as One System

Thermlock®  Performance

Sheerline windows and doors are all built around our Thermlock®  chassis design, ensuring exceptional thermal performance across all products, helping keep homes warm and fuel bills low.

Colour Matched

We powder coat all our products to ensure consistent colour is guaranteed. Whether you are choosing from one of our 12 standard colours or picking a bespoke finish, they’ll match perfectly.

Coordinated Styling

Our full aluminium window and door range is available with both stepped and contemporary ‘flat’ sashes and a choice of flush or standard outer frames*.
*Where appropriate

Universal Beading 

We utilise universal beading across the Prestige and Classic systems. These easy-fit clip-in beads come pre-gasketed to speed up fabrication and installation.

Even our Cills Innovate

Our cills sit flush with the back of outer frames, so windows fit perfectly vertically to plaster lines. They also feature a co-extruded weatherseal.

Reverse Butt Joints

Thanks to our patented construction method, our Prestige system is available with Reverse Butt Joints – for internally beaded combination windows.

Classic Windows

With ultra slim 59mm sightlines the Classic window system is an ideal replacement for traditional steel windows, or for ultra modern, minimalist, renovations and extensions.

Casements, French, Fixed, Curved, Bow and Bays


Classic Heritage Door

Completing our ultra slim aluminium range is the new Classic Heritage Door. Featuring a period inspired lockbox design, art deco styling has never looked so good or performed so well.

Single and French Doors


Prestige Windows

Our most versatile and thermally efficient window range, Prestige offers our widest range of options meaning it’s suitable for the broadest range of projects.

Casements, Tilt & Turn, French, Fixed, Bow and Bay Windows, Angled and Curved Windows


Prestige Doors

Ultra-rigid, premium aluminium door frames combine strength and durability with exceptional thermal performance. For a perfectly matching complete aluminium look.

Single, French and Composite Doors


Prestige Bi-folds

Beautifully balanced Prestige Bi-folds with slim, equal sightlines ensure light bathes interiors, even when doors are closed. For bright airy interiors.

Single, French and Bi-folding Doors


Lift & Slide Patios

Up to 31% slimmer than market competitors, our multi-track aluminium lift & slide Patio combines flawless minimalism with exceptional thermal performance.

Twin and Triple Track Options


S1 Lantern

Our industry award winning S1 system, now available with Secured by Design accreditation, is the UK’s most secure, sustainable and stylish roof lantern. With great looks from every angle – due to our unique ultra-low line aesthetics.


Colour and Styles

All our windows and doors are available in matching styles to ensure everything coordinates perfectly across a project. With a wide range of standard and bespoke colour options available as well as a wood effect foil range – we have the perfect look for every home.

Discover the Options

Contact us to take the next step

To be put in touch with your closest Sheerline fabricator or to discuss becoming a customer, please get in touch.

Contact Us