How Is Secondary Glazing Different to Double Glazing?

Secondary Glazing ExplainedWhen choosing your new or replacement windows you are likely going to be faced with a host of decisions. Do you need planning permission? What material are you going to go for; uPVC, aluminium, composite? What about the style? Are you looking for casement windows, bay windows, or sliding?

But perhaps one of the most important decisions you will need to make refers to the type of glass. A choice that is a little more limited than those above, but one of incredible importance, you should fully understand what you options are. Therefore we thought we’d explain to you the difference between secondary and double glazing; a confusion which faces many who don’t quite understand how they differ.

What Exactly is Secondary Glazing?

Secondary-glazing is just one of another list options for your replacement, repairs, or new windows. According to our knowledge secondary glazing is nothing new and were in fact incorporated into the original design of many 19th century buildings.

Like double glazing the option is perfectly suited for most environments whether flats, houses, or commercial premises. Secondary glazing is a fully independent window system which is installed on the inside wall of the existing window. The original windows will remain in place whilst the secondary glazing is available as openable, removable or fixed units. You will generally find the fixed forms are designed to be removed in warmer months when thermal insulation is not required.

You should consider secondary glazing when a property style means that more modern replacement windows, like double glazing, is inappropriate or in fact not allowed.

Secondary Glazing: The Benefits

The main purpose of secondary glazing is often to improve the thermal performance of windows in older buildings by draft proofing. They provide a multitude of benefits;

  • Thermal Insulation
  • Sound and Noise Insulation
  • Condensation Control
  • Window Security

What’s The Difference?

Double glazing, like secondary, creates an effective barrier against heat and noise. This popular option differs where we see two panels of glass sandwiched between the outer and inner frame and a void between the two panes is filled with Argon gas.

In historic buildings there is usually a strong preference for secondary glazing for insulation and repairs as it doesn’t lead to a change in aesthetics which often comes with double glazing.

More Information and Advice

If you’re looking to improve the energy efficiency of your home but would prefer not to replace them give our experiences team a call on 0117 9717 880 for more information and advice regarding secondary glazing.