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Ultra slim, high performance aluminium windows

Our slimmest window range, perfect for contemporary and heritage projects. Designed to combine the latest technical innovations with peerless aesthetics. Available as beaded and beadless options.

The ultra slim 59mm sightlines* of the innovative Classic window system maximises the light flooding homes, creating a refined architectural look. We’ve also designed out the misalignment of corners seen on lesser aluminium systems, using our patented construction method. Allowing each Classic window to be individually hand tuned to perfection. Leaving you with the perfect balance of understated refinement and exacting quality standards.

Featuring Our Unique Thermlock®  Technology

Clean, crisp lines on the outside hide away our innovative Thermlock®  multi-chamber thermal design, helps keep properties well insulated against the worst of the UK weather. These insulating chambers act as a thermal break and work in conjunction with high performance glazing to create class leading thermal performance, far superior to traditional polyamide thermal breaks.

Inbuilt Security

All Sheerline windows carry PAS24:2016 enhanced security accreditation, so if you are looking for stylish aluminium windows with extra peace of mind as standard – then we have you covered.

For added peace of mind choose our laminate glass upgrade – for Secured by Design accreditation – the official UK Police initiative ‘designing out crime’ through physical security.

Create Light, Airy Interiors

Our ultra slim aluminium windows are available in casement, French and fixed styles, with sightlines as slim as 36.5mm for picture windows, and 59mm for opening windows*. Classic lets light flood in, opening up interiors helping to create that important sense of space and tranquillity.

*Beadless sashes, 60.5mm for beaded sashes

The ultra slim 59mm sightlines* of the innovative Classic window system maximises the light flooding homes, creating a refined architectural look. We’ve also designed out the misalignment of corners seen on lesser aluminium systems, using our patented construction method. Allowing each Classic window to be individually hand tuned to perfection. Leaving you with the perfect balance of understated refinement and exacting quality standards.

Featuring Our Unique Thermlock®  Technology

Clean, crisp lines on the outside hide away our innovative Thermlock®  multi-chamber thermal design, helps keep properties well insulated against the worst of the UK weather. These insulating chambers act as a thermal break and work in conjunction with high performance glazing to create class leading thermal performance, far superior to traditional polyamide thermal breaks.

Inbuilt Security

All Sheerline windows carry PAS24:2016 enhanced security accreditation, so if you are looking for stylish aluminium windows with extra peace of mind as standard – then we have you covered.

For added peace of mind choose our laminate glass upgrade – for Secured by Design accreditation – the official UK Police initiative ‘designing out crime’ through physical security.

Create Light, Airy Interiors

Our ultra slim aluminium windows are available in casement, French and fixed styles, with sightlines as slim as 36.5mm for picture windows, and 59mm for opening windows*. Classic lets light flood in, opening up interiors helping to create that important sense of space and tranquillity.

*Beadless sashes, 60.5mm for beaded sashes

With a choice of traditional or contemporary styling

Our Classic system is an ideal replacement for traditional steel windows and doors, as well as ultra-modern, minimalist renovations and extensions.

  • Contemporary
  • Contemporary Flush
  • Stepped
  • Stepped Flush
Explore style and colour options

Plus Authentic Heritage Options

Classic can also be used to create authentic looking traditional windows and doors. With specifically designed decorative bars for a distinctive period aesthetic.

Bars can be positioned horizontally or vertically to achieve a variety of looks, either creating an authentic looking Georgian grid or divided horizontally to give a stylish 1920’s ‘Art Deco’ aesthetic.

BEADED SYSTEM

MAXIMUM VERSATILITY

Our beaded option lets you supply frames and glazing separately. In versatile configurations of opening and fixed light combinations and picture windows.

GLAZING OPTIONS

Option for 36mm triple glazing on contemporary styles and fixed frames. Also allows for the slimmest picture windows with ultra-thin 36.5mm sightlines.

EASY FIT CLIP-IN BEAD

Easy fit clip-in bead removes the need for wedge gasketing and perfectly matches our Classic Heritage door range, with its period inspired lock box design.

Also available as a
beadless option

Our original, revolutionary beadless window system for customers looking for extra security and unrivalled aesthetics.

The beadless version of Classic offers even more refined internal corners with run through mitres on internal joints for the perfect finish.

It’s beadless construction also eliminates a common area of attack by would-be intruders

BEADLESS FEATURES

SELF LOCATING

Easy installation with hinges fitting into self-locating slots that hold sashes in position while they are screwed in place.

QUICKER TO INSTALL

Beadless windows are supplied pre-glazed, and feature built-in toe and heeling device meaning there’s no need to spend time wedge gasketing.

ULTIMATE SECURITY

Beadless construction eliminates a common area of attack. While patented corner joint allows for on site deglazing if required.

Sightlines

Based on choice of outer frame

FIXED FRAME WINDOWS

36.5mm
49mm

BEADLESS CASEMENT & FRENCH

59mm
71.5mm

BEADED CASEMENT & FRENCH

60.5mm
73mm

U-VALUES

1.5 U-value
W/(m²K)
Double glazed

1.1 U-value
W/(m²K)
Triple glazed*

*Only available in certain styles.

Homeowner Benefits - Sheerline Classic Windows

Colour Range

Agate Grey
RAL 7018
Matt

Anthracite Grey
RAL 7016
Matt

Jet Black
RAL 9005
Matt

Chocolate Brown
RAL 8017
Matt

Cream
RAL 9001
Matt

Pure White
RAL 9010
Matt

Hipca Gloss White
RAL 9910
Gloss

Squirrel Grey
RAL 7000
Matt

Pastel Turquoise
RAL 6034
Matt

Silver
Metallic Effect

Mid Bronze
Metallic Effect

Black
Metallic Effect

Complementary door range

With the same slim sightlines and a distinctive heritage look, Classic Heritage Doors are the perfect partner for our Classic slim aluminium windows.

Built as a truly integrated range, 100% matched.

Learn about our Classic Heritage Door

Contact us to take the next step

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

Contact Us