Secondary Glazing

The upgrade that works for Suffolk, Norfolk and Cambridgeshire.


With some of the most varied and historic housing stock in England, some homes are not always eligible for new windows and doors. Whether Grade 1 or 2 Listed, in a conservation area or with other Local Authority restrictions when it comes to window replacements. This is where Secondary Glazing Provides the ideal solution.

Cottages on the Suffolk coast, Georgian townhouses in Bury St Edmunds and Cambridge, Victorian terraces in Norwich, timber-framed farmhouses across the Fens and Broads. All these buildings and more are ideal for secondary glazing because you get to keep your original windows whilst getting better acoustics, energy efficiency and room comfort. All, without losing losing what makes our iconic period homes worth living in.

What is Secondary Glazing?
What it is Secondary Glazing?


A discreet inner window, fitted to the inside of your existing frame. It creates an insulating air gap between old and new, improving thermal performance, cutting noise, and eliminating draughts without altering the original window or changing how your home looks from the outside.

Nothing is removed. Nothing is replaced. The original window stays exactly as it is.

White secondary glazing for sash windows - available from The Burgess Group

Why Secondary Glazing could be for you

Suffolk, Norfolk, and Cambridgeshire have a high concentration of listed buildings and conservation areas. From the Norfolk Broads to the Suffolk Coast and Heaths Area of Outstanding Natural Beauty. Cambridge, Bury St Edmunds and other surrounding villages have buildings that carrying a listing or sitting within a protected area.

If you’re fortunate to own one of these gorgeous homes, replacing windows is rarely straightforward and often not permitted. Secondary glazing generally meets the requirements of the Planning (Listed Buildings and Conservation Areas) Act 1990, making it the accepted route for improving performance where Conservation Officers require the original windows to remain untouched.

If your local planning authority has said no to replacement windows, secondary glazing is almost certainly the answer.

How your home can benefit.

Available in sliding, hinged, and lift-out configurations, finished in a choice of standard or classic RAL colours. Lift-out panels can be removed in summer to increase airflow and reinstated in winter — a practical consideration for older properties where natural ventilation matters alongside insulation.

  • Reduces external noise by up to 80%
  • Cuts heat loss more effectively than double or triple glazing
  • Eliminates draughts
  • Adds an extra layer of security
  • Your original window stays untouched


Every unit is purpose-built to suit the specific window, reveal, and opening. The building stock across this region doesn’t follow a single template, and neither do our systems. Sash windows, bay windows, French windows, arched and Gothic designs, irregular openings in older properties. Secondary glazing even works with complex period window designs that are hard to recreate today.

Installed properly. Specified with confidence.

We work regularly with architects, contractors, and developers across Suffolk, Norfolk, and Cambridgeshire on projects where compliance, accuracy, and a clean finish are non-negotiable. We understand the planning context of this region, and we’re experienced in working alongside conservation officers and heritage consultants where that’s required.

Here is everything you need to know about Secondary Glazing by The Burgess Group.

Contact our friendly team to find out more, or visit our showrooms in Woodbridge, Fornham St Martin or Norwich.