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Double Glazing Doors: Pros, Cons & Costs

double glazing doors

Double glazing doors can make your home safer, quieter and warmer. So they’re well worth the investment, especially if your current doors only have single glazing.

What are double glazing doors?

A double glazing door has two panes of glass rather than the one that single glazed doors. In between these panes is an insulating gas. This acts as a form of insulation between the cold outside and the warmth inside.

The second pane of glass acts as an additional barrier against heat loss and outdoor noise. And as an added bonus, it reduces condensation too.

Types of double glazing doors

Any door with glass can be fitted with double glazing. Whether it’s a small window in a front door or the large glass panels of sliding patio, bifold or French doors.

Front or back doors

A standard front or back door isn’t likely to feature too much glass. But making sure that even the smallest window in the door has double glazing can make a huge difference.


A patio door is a sliding glass door that can fill your home with natural light. They’re normally made up of two (or even three panels) that slide parallel to each other.


Bifold doors are made up of 2-7 (possibly more) large glass panels that fold into each other to open up the space between the indoors and outdoors.


French doors are often confused without patio doors. But rather than sliding, they feature two doors that swing open outwards.

There are also French sliding doors which have two doors that slide away from each other.

Benefits of double glazed doors

Where do we start? Double glazing doors can benefit your home in many ways.

The first bit of good news is that double glazing for doors (as well as windows) can increase the value of your home. So if you’re planning to put your house on the market, get double glazing fitted.

If you aren’t selling up any time soon, double glazing is still well worthwhile:

  • Lower your heating bills by preventing heat from escaping
  • More durable and secure than single glazing
  • Reduce condensation
  • Less outdoor noise will be able to make its way into your home

Are there any downsides?

There aren’t too many downsides to double glazing doors. And while there are a few, they don’t outweigh the benefits.

The first concern you might have is the price. Double glazing is more expensive than single glazing but it’s worth the extra investment. It’s strong, more durable and won’t need to be replaced as soon.

Speaking of replacing double glazing, if it was to break then it can be hard to replace. This means that it will need to be replaced. But, as we said, double glazing is tough.

One of the benefits of double glazing is that it can help to keep your home warm – known as solar gain. This is great during the winter but not what you want during the summer. So you may notice that you’re having to open up the windows more often.

How much is a new double glazed door?

Size, frame material and style will all have an impact on how much your new double glazed doors will cost.

uPVC double glazed doors

uPVC is the most common material used for doors and windows in the UK. Mainly because it’s the most affordable option.

Style Average cost
Front door £250 – £400
Sliding patio £600 – £750
French £400 – £600
Bifold £1,200 – £2,000

Aluminium double glazed doors

Aluminium is a modern option that’s incredibly strong. It’s an especially good frame to use for French and bifold doors.

Style Average cost
Front door £700 – £1,500
Sliding patio £1,650 – £2,500
French £750 – £1,100
Bifold £1,500 – £3,000

Timber double glazed doors

Timber is a very desirable material for replacement doors. As well as holding a certain charm it also acts as a great insulator.

Style Average cost
Front door £300 – £700
Sliding £900 – £2,000
French £775 – £1,600
Bifold £1,500 – £2,250

Don’t forget about the installation costs. These will need to be added onto the cost of the door itself.

To get the best price for installation, we highly recommend comparing quotes from at least 3 different companies.

What about double glazed windows?

Double glazed windows have all the same benefits as doors with double glazing. And fitting double glazed windows, as well as doors, around your home will make your home even safer, quieter and help to reduce your heating bills further.

Find double glazing installers

Finding installers to fit double glazed doors doesn’t have to be a hassle. In fact, if you take a few moments to answer some quick questions then you can get free quotes from up to 3 installers in no time at all.

When you have your quotes, comparing them will give you the best chance of finding the most competitive price for installation.

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