Secondary Glazing For Listed Buildings

Category: Glazing

Listed and historic homes and buildings are typically draughty,  thermally inefficient and with poor acoustic performance.  English Heritage and conservation bodies recognise that such homes and buildings need to adapt to be attractive for homeowners and modern use.  These issues can all be helped with the careful addition of secondary glazing. 

secondary glazing – photo courtesy of customer (The Plastic People)

Secondary glazing involves adding another slim-line window to your existing windows. It is a cost effective and efficient method of insulating & sound proofing your windows – and for listed buildings, the only way to insulate and sound-proof your windows.  In most cases conservation bodies accept secondary glazing as a reversible adaptation.  Ie) it can be removed, if required, at a later date with almost no impact on the original design or fabric of the building apart from repair of fixing holes and some redecoration.

There are many variations of secondary glazing  - hinged, sliding, fixed and lift out.  They will all save energy, reduce heating bills, improve the energy rating and make your home more comfortable.

The Plastic People provides one of the least intrusive secondary glazing options for listed buildings –  lift out secondary glazing which fixes onto existing window frames with magnetic fixings.  You can see it here.

To install secondary glazing yourself, follow these 5 steps

  1. Measure up inside the window panes that you want to secondary glaze.
  2. Go to and order Magnetglaze Quickfit with your window sizes. You’ll get everything you need for your windows –  a correctly sized acrylic glazing pane and black and white magnetic strips which you use to connect the glazing pane to your window.
  3. Cut the white magnetic strip so it fits around the edges of your window frame then stick it to the window frame.
  4. Cut the black magnetic strip so it can be stuck to around the edges of the acrylic pane.
  5. Pick up your new acrylic glazing pane and connect it onto your window the magnetic strips will hold it in place.

If you would like further help or advice, email the friendly team at The Plastic People who will be happy to help.


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