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Secondary Glazing
The fastest growing sector of our business is Secondary Glazing - and whilst other Suppliers have come & gone, we have consistently maintained a strong presence with this product.

Secondary Glazing is eminently suited to London with its' unique blend of Historic, Period, Modern, City, Suburban, High-Rise and Traditional Residential & Commercial properties.

Add to this the increasing number of properties that are subject to Conservation Area or Listed Building Status or that are Leasehold or Joint Freehold, with limitations as to how Windows & Doors can be renewed, and Secondary Glazing really comes into its' own!

Our commitment to Secondary Glazing as a product through the years has led us to respond to the demands of discerning customers for a system that is not only effective, but that is also stylish & discreet, matching in with modern surrounds and décor as easily as it blends into a traditional timber Sash Window or an Elizabethan Metal Casement with Leaded Lights.

The Design Criteria for our Secondary Glazing Range has been for products that are Robust & Functional, as well as Complementary & Unobtrusive once installed.

Every property is different.

We take care to specify the correct Secondary Glazing units, ensuring that the original sight lines are not disturbed, lining up vertical & horizontal sections, ensuring easy access for both opening the primary windows and cleaning all glass surfaces internally & externally.

Our Concealed Fixing System & a wide range of Moulded Finish Sections are used to achieve a perfect finish.

Heat Insulation
Where the original windows are essentially sound but not up to modern standards of thermal insulation, our Secondary Glazing provides an economical solution that is the equal of modern Double Glazing, without affecting the exterior façade of the property.

• Heat Insulation Page

Noise Reduction
For reducing the increasing Noise Pollution that our modern society produces - there is no other single product that comes close to the performance of our Secondary Glazing Acoustic Range.

• Noise Insulation Page

Security
An additional benefit of Secondary Double Glazing is that it provides increased security.

Product Range
We have a comprehensive range of styles to suit just about any application.

Standard Secondary Glazing Types 2, 3, 4 & 5 part Horizontally Sliding Units Balanced Vertically Sliding Units Easy Clean Tilt-in Balanced Vertically Sliding Units Top Hung, Side Hung & Double Hung Hinged Units Lift-Out Units where only occasional access is required Fixed Units for glazed Door Lights

Application Casement Windows Sash Windows Sash Windows Casement Windows & Doors Casement & Small Sash Windows Part Glazed Doors

Special & Bespoke Secondary Glazing

Curves in the Face Elevation Curves in the Plan Elevation Semi-Circular Circular Elizabethan Arched Heads Gothic Arched Heads Triangular & Trapezoid

Out of Square Incorporating Fly Screens Incorporating Trickle Vents Any Colour or Finish Specialist Glasses Specialist Film Applications Fire Rated

Our standard frame finish is White, we also stock Brown and Wood Grain finishes and can paint finish to any RAL colour to match or complement your internal colour scheme & decoration.

Listed Buildings & Conservation Areas
Secondary Glazing is particularly suitable for Listed Buildings and Conservation Areas where it may be inappropriate, prohibitively expensive or where permission has been or may be refused to replace the original windows.

Listed Building and Conservation Area Planning Officers generally welcome the idea of Secondary Glazing and for most instances Planning Permission is not required.

Treatment of the Existing Windows when Installing Secondary Glazing
When fitting Secondary Glazing the existing original windows should not be sealed up or fitted with draught excluders.

Doing so makes very little difference to the overall Thermal & Noise Insulation Ratings and could create a Condensation Trap.

Well sealed Secondary Glazing ensures that no draughts enter the property whilst the average primary window will allow sufficient ventilation of the space between the two layers of glass to avoid condensation forming.

Where the existing primary windows are already double glazed or are very well sealed then we may recommend ventilating the cavity to avoid condensation.