Sheerline® Prestige® Aluminium Windows

Revolutionary Aluminium Windows and Doors with Intelligent Design born out of experience

Sheerline®  Prestige® Aluminium

4 Styles, all great British performance

Introducing Prestige® by Sheerline® Aluminium

Building on years of experience, we’ve incorporated many new innovative ideas to create the Sheerline range of Window, Door and Bi-fold systems available now, and a new Lift and Slide Patio Door launch late Summer 2023. Creating warm, slim and ultra secure products, designed for discerning homeowners who aren’t willing to compromise

Built around our innovative Thermlock® multi-chamber thermal break, Sheerline windows use a patented construction method that creates the most beautiful, high quality finish possible. Stylish, safe and sustainable – and offered with unbeatable service levels – Sheerline is the right choice for homeowners

A range of Contemporary Colours

Prestige® windows and doors are available in eight powder coated matt colours, as well as a high gloss white with the option of choosing a different colour for the interior to help you find the look that is perfect for your property.

Traditional Pure White

RAL 9010 Matt

Traditional Hipca Gloss White

RAL 9910 Gloss

Traditional Anthracite Grey

RAL 7016 Matt

Traditional Jet Black

RAL 9005 Matt

Character Premium Cream

RAL 9001 Matt

Character Premium Agate Grey

RAL 7038 Matt

Character Premium Squirrel Grey

RAL 7000 Matt

Character Premium Pastel Turquoise

6034 Matt

Character Premium Brown

RAL 8017 Matt

Sash Style

With four styles of sash to choose from, one will be perfect for your home

Double and Triple Glazing

Our Sheerline Prestige Aluminium Windows are available in Double and Triple Glazed options

Double Glazed

  • 28mm Unit
  • Integral Blinds option
  • Best performance to price
  • Typically 2.8 times better thermal performance than old double glazing, and up to 5 times better than single glazed

Triple Glazed

  • 44mm Unit
  • Increase in heat retention compared to double glazed (typically 0.2u) when used in a 44mm unit (compared to 28mm)
  • Improved sound reduction compared to double glazed
  • Lead decoration if required can be applied to the centre unit, making aging from weather and cleaning a thing of the past

Prestige® by Sheerline® Aluminium Windows

Our most thermally efficient 72/80mm system, accommodating the largest apertures, and available in the widest range of styles. Prestige windows feature a full depth Eurogroove, giving you the maximum choice in hardware options

Stylish aluminium windows that combine exceptional thermal performance with refined looks

Choosing the right aluminium windows for your home is an important decision. An investment that makes a real difference to how warm and secure you feel, as well as improving the look of your property. That is why we have carefully designed the Prestige window and door system to combine stylish looks with the latest technical innovation. Building on years of experience, we’ve incorporated many unique features to create an incredibly thermally efficient, secure system, with unparalleled aesthetic appeal, that’s available in a wide range of colours. Designed for discerning homeowners that aren’t willing to compromise, the Prestige range is tailored for those who demand more for their homes

Styling Options

With a choice of traditional or contemporary styling Sheerline aluminium windows are available in a choice of two opening sash styles; ‘Stepped’ – inspired by traditional steel windows and ‘Contemporary’ - with a more modern minimalist aesthetic

Both styles are available in either our standard outer frame, or as a ‘Flush’ option that brings both the perimeter and the opening sash perfectly in-line with each other. You can draw on our experience if required to find the one that resonates best with your home’s character. A range of Georgian bar options are also available.


Prestige combines aluminium’s clean lines with exceptional thermal performance for up to an A+ Window Energy Rating.* Our innovative Thermlock® multi-chamber thermal design, hidden away inside each window and door, helps keep you and your property well insulated against the worst of the UK weather. This closed-cell, insulating chamber acts as a thermal break and works in conjunction with high performance glazing to create class leading thermal performance, far superior to traditional polyamide thermal breaks. Sheerline’s cills also feature this same technology coupled with innovative in-built weather sealing keeping draughts and rain safely outside

Patented Construction

With sightlines starting as slim as 88mm, Prestige windows and doors help maximise the daylight entering your home, with crisp aluminium detailing creating a refined and architectural look. While our patented construction method – using threaded screws to bind corners tightly together – helps eliminate misaligned corner issues that can occur on ordinary aluminium frames. This allows each Sheerline window to be individually hand tuned to perfection. Leaving you with the perfect balance of understated refinement coupled to exacting quality standards, where no detail’s overlooked. Creating consistent aesthetics across every Sheerline window and door

Download or View the Brochures


Minimum and Maximum Dimensions

Style Min Width Min HeightMax Width  Max Height Design Wind Pressure
Top Hung Sash 380mm 330mm 1430mm 1260mm 800 Pa - 2400 Pa
Side Hung Sash 330mm 370mm 710mm 1450mm 800 Pa - 2400 Pa
Floating Mullion / French Casement (2 Sash)660mm 380mm1429mm 1450mm 800 Pa - 2400 Pa
Fixed or Dummy Sash 350mm 350mm 1500mm 2100mm 800 Pa - 2400 Pa
Tilt and Turn 460mm 500mm 1428mm 1428mm800 Pa - 2400 Pa 

Recently installed local installations of Sheerline® Aluminium Windows and Doors


Cart is empty.