Windows

Stylish & High Performance

Conservation Windows

RTT produce bespoke conservation windows in keeping with heritage and conservation requirements. Windows that preserve the valued aesthetic of a building’s façade – with a contemporary level of performance.

We have installed these in some UK national treasures including Tower Hamlets Town Hall and the prestigious One Sloan Square Hotel.  

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Description & benefits
  • Single, Double Slim, Double Standard or Triple glazing
  • Multi sash configurations
  • Available as mock Sash & Case
  • U-values to 1.0W/m2K
  • Acoustics of 29-39dB
  • Internal & External Astragals
    • Lambs tongue 18mm & 22mm
    • Ovole profile 18mm& 22mm
  • Decorative horn options available to top and bottom sashes
Performance

Enhanced Security Window: PAS 24:2022

Air Permeability: Class 3 | EN 12207:2016

Water Tightness: Class 7A | EN 12208:2000

Resistance to Wind Load: Class 3 | EN 12210:2016

Whole Window U-Value:

  • 1.6W/m2K – 14mm – Slim Unit
  • 1.4W/m2K – 28mm – Standard Unit
  • 1.0W/m2K – 40mm – Triple Unit
Styles
  • Sash Windows available with a Spiral Balance mechanism or traditional Cords & Weights
  • Suitable for Listed Buildings and other conservation projects
Spiral Balance

 

Cords & Weights

 

Mock Sash & Case also available.

Finishes

Our window systems are available in our standard range of colours as well as the full range of RAL Classic colours. Timber elements come in white (RAL 9010) as standard but are available in the full range of RAL Classic colour pigmented finishes and clear lacquers.

Powder coatings on our aluminium products are also available in the full range of RAL Classic colours as well as metallic and anodised finishes. Powder coating is available to Qualicoat Class 1 and Class 2.

Timber coatings are environmentally friendly, water-based formulations with low odour and no solvents. Paints are applied using electrostatic wraparound robotic technology, giving optimum protection whilst reducing waste.

RTT hardware is offered in chrome, gold anodised (GAA), white, and silver anodised (SAA) finishes.

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Get in touch

Have a question or want to start and order? Our experts are on hand to provide advice and assistance when you need us.

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