FIXED SECONDARY GLAZING

Ideal for permanent installation with no need for access. Best for properties where windows do not need to be opened or require a secondary window to enhance thermal or acoustic performance.

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Permanent
Fixing

Discreet
Sightlines

EFFECTIVE THERMAL
INSULATION

EFFECTIVE ACOUSTIC
INSULATION

Fixed Secondary Glazing Overview

Fixed secondary glazing units are permanently installed and non-opening, making them ideal for windows that don’t require regular access. These offer excellent thermal and acoustic performance while preserving the original window’s design with no sightlines. Fixed units can also be combined with other window styles as part of a larger secondary window. offer excellent thermal and acoustic performance while preserving the original window’s design with no sightlines.

Maximum Sizes
Extras
Glazing
Finishes

Maximum Sizes

Note: all sizes are for guidance only, and depend on several factors (including glass and subframe). Units and styles outside of those listed are sometimes possible – please contact us for advice.

Panel (4mm glass) Panel (6mm glass) Panel (6.4mm lam)
STYLES MAX W & H MAX W & H MAX W & H
Fixed H1636mm x W1500mm H1836mm x W1500mm H2336mm x W1500mm

Extra Options

While the idea behind secondary glazing is for it to go unnoticed, there are several extras we can incorporate into our units while still maintaining this sentiment. Fly screens, for example, are a completely clear addition that allows properties to be easily ventilated, simultaneously preventing flies and bugs from getting in. Equally, units can be supplied in any desired shape with arches, helping you to accommodate even the most awkward of aperture sizes.

Glazing Options

There are multiple glazing options, styles, and thicknesses possible with our range of horizontal secondary glazed units, each designed to enhance either safety & security, thermal efficiency, or noise reduction. All secondary glazing comes pre-glazed with 4mm clear glass as standard, with available options including laminated, toughened, and K glass.

Finishes

Our secondary glazing comes in three classic finishes: White, Black, or Brown. For a more personalised touch, frames can be sprayed in any RAL colour or supplied unfinished to suit your specific requirements—all available at an additional cost. Timber subframes are prefinished in white as standard, with optional colour-matching available to ensure a flawless finish for any interior.

A COLOUR TO SUIT YOUR SCHEME

Blend your secondary glazing effortlessly to match your existing interior and exterior design. With thousands of RAL colour options available, we’ll help you create a finish that fits seamlessly with your space.

From heritage properties to modern residences and commercial spaces, our colour-matched frames are designed to complement any setting beautifully.

Our other secondary glazing options

Horizontal Sliding

Features: Space-efficient, smooth sliding operation, effective thermal and acoustic insulation.
Best For: Large or wide windows, areas with limited vertical space.

Tilt Vertical Sliding

Features: Traditional design, smooth vertical sliding, effective thermal and acoustic insulation.
Best For: Heritage properties, sash windows, and traditional aesthetics.

Vertical Sliding

Features: Tilt-to-clean functionality, easy access, smooth sliding operation, effective thermal and acoustic insulation.
Best For: Modern and versatile spaces, where easy access and style are key.

Hinged

Features: Easy to open, versatile for access, effective insulation.
Best For: Rooms requiring frequent access, such as kitchens or utility areas.

Lift Out

Features: Removable for cleaning, discreet, high insulation.
Best For: Windows where access is not needed regularly but insulation is a priority such as bays, corner windows and tight spaces.

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