Secondary Glazing Cost Calculator

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Secondary Glazing Cost Calculator

Get an instant, itemised price for secondary glazing without contacting a single company.

Enter your window dimensions, choose your window style and glass type, and the calculator returns a live price in seconds — the same pricing used by London's leading secondary glazing specialists.

What it calculates:

Price per window based on exact dimensions (width × height in mm)
Four window styles: Vertical Slider, Horizontal Slider, Lift-out Panel and Casement
Two glass options: 4mm Toughened (thermal) or 6.4mm Saint-Gobain Stadip Silence™ laminated acoustic glass
Standard white or custom RAL powder-coated frame finish
Multi-window discount (1% per additional window)
Expected dB noise reduction and percentage of sound blocked
Estimated annual heating saving
Cost comparison against full sealed unit replacement
Who it's for:
Homeowners in listed buildings, conservation areas or period properties considering secondary glazing as an alternative to full window replacement. Also useful for landlords, architects and contractors pricing jobs quickly.

No sign-up. No data collected. Works entirely offline once installed.

For a free site survey and full specification, visit secondaryglazingcost.co.uk.