What is the difference between double glazing and secondary glazing?

December 9, 2015

What is double glazing?

Double glazing is a type of window that is made up of two panes of glass. These panes are separated by either a layer of air or a vacuum. The air or vacuum that is enclosed by the two panes of glass acts as a layer of insulation. This layer of insulation helps to retain heat and keep out noise & cold air.

What is secondary glazing?

Secondary glazing is a supplementary layer of glazing, installed on the inside of an existing single glazed window.

Why install double glazing?

There are numerous benefits of installing double glazing:

  • Retains heat whilst also keeping out cold air (or hot!)
  • Reduces draughts
  • Reduces heating bills
  • Increased security compared to single glazing
  • Reduction of condensation on the inside of windows
  • Helps to keep out noise

Why install secondary glazing?

There are numerous benefits of installing secondary glazing:

  • Not subject to building regulations (excludes listed buildings)
  • Allows you to retain the outer appearance of existing windows
  • Easy to install and remove
  • Can help retain heat
  • Helps to keep out nose
  • You don’t have to dispose of old windows
  • Drought proofing

Secondary glazing can also be installed in homes that already have double glazing. Many people living in homes near main roads or in a city choose to do this as it helps to keep out noise further.

If you are looking to get double glazing or secondary glazing installed in the Wirral, Liverpool, North Wales or Chester please call us on 0151 645 3830 or fill out our enquiry form.



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