Opal Aluminium Windows & Doors

CWD Improvements are approved suppliers and installers of Opal Heritage aluminium windows & doors doors in Surrey, Hampshire and Berkshire

We can replace your old heritage windows and doors, without sacrificing the traditional look and the grandeur with modern, safe and durable windows and doors

Our Opal Heritage aluminium windows have been designed specifically to replace existing steel windows. They replicate the appearance and slim sight-lines of traditional steel windows, and come as close as you can get to a steel window, using a thermally broken aluminium profile. These steel look-a-like windows not only provide an authentic appearance, they offer much improved security, thermal efficiency, and come at a fraction of the cost of steel.

With their timeless looks they are suitable for use in listed buildings and conservation areas. They can be fabricated to suit almost any period property and can be specified for a wide range of applications, including new build, replacement and refurbishment, domestic and commercial projects. Retain the classic look, character and integrity of your property with our Heritage Window Range.

Opal Aluminium Windows & Doors
Opal Aluminium Windows & Doors
Opal Aluminium Windows & Doors

Maximum Daylight, Minimal Framework

Heritage aluminum’s appeal has never been higher. This is due to the fact that it checks all the requirements for home owners.

These aluminium windows and doors are made to look like steel or crittal style doors and windows, and they have some of the slimmest sightlines on the market without sacrificing performance or durability. The ornamental glazing bars add an appealing Art Deco feature to the windows and doors, making them a show stopper for everyone of the homeowner’s family and friends to admire.

Great Thermal Efficiency

Polyamide, an efficient insulator that helps to insulate windows against heat loss, is used to thermally break modern aluminium windows. Polyamide has 160 times the heat conductivity of steel, and it also helps to elevate the internal temperature of a home, reducing the risk of condensation.



Opal Aluminium Windows & Doors
Opal Aluminium Windows & Doors

Maintenance Costs are Reduced

Simple and basic maintenance is required, with only a routine ‘wipe-clean’ required to keep the objects looking their best. Even in harsh situations like coastal locations, where steel windows are particularly prone to rust, requiring frequent care and, eventually, replacement, aluminium windows and doors never fade, rot, or rust.

  • Retain the old, original look
  • Great for Patio Doors
  • Reduced or Zero Maintainence Costs
  • Aluminium which looks like steel
  • Approved steel replacement windows for listed buildings by many Council Authorities
  • Ultra slim framework
  • Can achieve grade A thermal rating at the fraction of the cost of steel

Window frames made of aluminum do not corrode or degrade, and they can last for the longest time. This also means that aluminum windows have the longest lifespan of any window framing material, with typical replacement durations of 40 years vs 35 years for steel, PVC, and wood.



Click here to request your free online quote

  • Free Quote with no obligations
  • Affordable prices
  • Request online today

Some of our other services...

Bifold Doors

Our aluminium bifold doors have an extra slim frame to allow more light into your your home.

Roller Garage Doors

Roller shutter garage doors are one of the most versatile and secure garage door options


Choosing the style of windows for your home can be made easy with our range of PVCu
Casement Windows