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Double Glazed Windows: Are They Really Worth the Expense?

double glazed windows pros and cons

Perhaps you’re in the process of building a new house? Maybe you’re looking to make some updates to the home that you currently live in. In any case, you’re most likely considering installing double-glazed windows.

The only problem is that you’re not sure they’re worth the investment. After all, a double-glazed window costs quite a bit more than a single-glazed window. Is it worth the extra cost?

For some, the answer is “yes”. For others, the answer is “no”. The only way you can know for sure is by doing your research.

What Are Double-Glazed Windows?

Double glazed windows are designed with two layers of glass separated by a gap filled with air or gas, creating a barrier that reduces heat transfer. This design provides better insulation compared to single-pane windows, which can result in several benefits including improving insulation and adding value to a home.

What Are The Advantages of Double-Glazed Windows?

If you’re wondering how to choose windows for your home remodelling project, this profile could be helpful. Here are the advantages of double-glazing windows.

Improves Insulation

One of the purposes of windows is to provide insulation to the home upon which they’re installed. While all windows do this to an extent, no type of window does it to a greater extent than the double-glazing window.

Whereas single-glazed windows will lose between 50% and 70% of the heat and cold they contain, double-glazed windows will lose only between 30% and 50% of the heat and cold they have. This makes them highly effective during the summer and winter, as they eliminate most cold drafts and heat waves.

Provides Greater Energy Efficiency

Because they provide such terrific insulation, double-glazing windows are extremely energy efficient. Why is this? Because they keep heat and cold trapped within their corresponding homes, allowing those homes’ air conditioners and heating systems to use less energy than they would have to otherwise.

So, while double glazing can be expensive in the short term, it can save you money (through reduced energy bills costs) in the long run.

Staves Off Condensation

Do you regularly deal with condensation on your windows? If so, you could benefit from installing double-glazed glass panels. These panels do a terrific job of staving off condensation, fighting it off on their interiors and exteriors.

Not only will a reduction in condensation increase the visibility of your windows, but it will also reduce the amount of mould and mildew that build up on your windows. This equals less maintenance in the long run.

Cuts Down on UV Light Damage

Did you know that the UV rays emitted by the sun can cause damage to the things with which they come into contact? This means that the possessions next to your windows are all in positions of vulnerability. Colour fading, in particular, is an imminent danger to these possessions.


Fortunately, double glazing is a way to cut down on the number of UV rays that shine through your windows. Double-glazed windows will reduce the fading of your carpet, furniture, and other possessions, allowing you to let the sun illuminate through your windows regularly.

Reduces Sound

Do you live in a noisy area? Can you hear miscellaneous sounds creeping into your home at all hours of the day? If so, double glazing is for you.

Doubled glazed panels are sealed airtight, allowing them to block the majority of soundwaves which come floating their way. They’ll make you feel like you’re living in a peaceful area.

Increases Strength

While they’re not indestructible, double-glazed windows are much stronger than their single-glazed brethren. This protects them from incidental physical trauma, such as the force of an overthrown baseball and purposeful physical trauma, such as the force of a burglar’s crowbar.

Double glazing won’t be a bad idea if you want to beef up the security and protection of your home.

Ups Home Resale Value

One last advantage of the double-glazing window is an increase in the resale value of the home upon which it’s installed. This means that if you install double-glazing windows on your home, you can sell it in the future for a more excellent price than you would if it were to have single-glazing windows instead.

This is a crucial point to remember when debating whether or not the extra cost is worthwhile. You may pay more money for these windows initially. However, you may save money over time.

The Disadvantages of Double-Glazed Windows

There are far more advantages to double-glazed windows than there are disadvantages. Nonetheless, drawbacks do exist. They are as follows.

Can’t Always Be Repaired

As was noted above, double-glazed windows are designed to be exceedingly tricky. Nonetheless, on rare occasions, they can experience deterioration, particularly in the spots where they seal to their corresponding frames.

Unfortunately, if this happens, they can’t be repaired. This will result in condensation between their two panes, making them more and more residue-ridden over time. At some point, your only option will be to replace them with all-new windows.

Note, however, that many of the double-glazing windows on the market come with warranties. You won’t have to worry about new-purchase costs if your windows are warrantied.

High Cost

As we’ve repeatedly stated, double-glazed panels are more expensive than single-glazed panels. In fact, in some cases, they can be as much as double the price of single-glazed windows.


Note, however, that because they’re so durable and because they’re so energy efficient, they are reasonably inexpensive over time. They can sometimes end up being cheaper than single glazed windows in the long run.

Final Words

Double-glazed windows improve thermal efficiency, energy savings, noise reduction and enhance security. Plus as homeowners appreciate them, double-glazed windows and doors increase the attractiveness to homebuyers.

While double glazed windows can contribute positively to a home’s value, other factors such as the overall condition of the property, location, and the quality of the windows themselves also play a role.