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Single Pane VS. Double Pane Windows: Learning The Difference?

Key Takeaways –

  • Gone are the days of single-pane windows.
  • Homeowners and commercial property owners alike prefer a double-pane window that is good for reducing energy bills.
  • Double-pane windows trump their former version in costs, energy efficiency, and insulation.
  • Replacing the single-paned windows at the right time can save you a considerable sum in the future.
  • Energy Advantage Roofing and Solar can help you with all your window installation needs.

Homeowners and commercial properties choose from two main window types – single and double pane. Both windows have their benefits and drawbacks, so it’s essential to know the difference between them before deciding. This blog takes a detailed look at both window types and breaks down the key differences to help you make an informed decision.

Before discussing the visible differences between the two glass window types, here’s a brief insight into what makes the two windows different.

Single-Pane Windows

Single-pane windows are the most basic window types – they consist of a single glass sheet. These conventional windows are not as energy efficient as their double-pane contemporaries because they don’t have two layers of glass to trap heat. As a result, single-pane windows tend to let more heat escape in the winter and let more heat in summer.

However, single-pane windows are less expensive than double-pane windows. So, if you’re on a budget, single-pane windows might be the way. Just be aware that you’ll likely see an increase in your energy bills.

Double-Pane Windows

Double pane windows include two glass sheets with an air space between them. The air space acts as an insulator, trapping heat during the winter and keeping heat out in summer. This makes double pane windows much more energy efficient than single pane windows – which means lower energy bills for you!

Of course, this increased energy efficiency comes at a cost – literally. Double-pane windows are generally more expensive than single-pane windows because they require more materials. But double-pane windows are definitely the way to go if you’re looking to save money in the long run.

Single Pane vs. Double Pane – What Are the Differences? –

Here’s how the two window panes differ from each other


When it comes to costs, double-pane windows require a higher up-front investment. However, they offer good returns by ensuring energy conservation and efficiency. So, you will save money by opting for double-pane windows.

On the other hand, single-pane windows are a more budget-friendly option for those who don’t want to spend as much upfront. But keep in mind that you’ll likely see higher energy bills with single-pane windows since they’re not as energy efficient.

Energy Efficiency

Double-pane windows have higher energy efficiency because they’re made with two glass layers. This creates an additional insulation layer keeping the heat in during the winter and out during the summer. Single-pane windows only have one layer of glass; they’re not as good at insulation as double-pane windows.


Additionally, being more energy efficient, double-pane windows also provide better insulation. This is because they have two layers of glass that work to keep heat in and cold out. Single-pane windows only have one layer of glass, so they’re not as effective at insulating your home against temperature extremes.

How to Know if You Need to Replace Your Single-Paned Windows?

Asking the right questions at the right time can make the decision to replace single-paned windows easier. 

  1. Temperatures Indoors – A considerable drop in temperatures indoors despite closed windows and heater presence is a sign you need to replace your windows. Old, single-paned windows are often responsible for drafts and temperature fluctuations that you might not realize. Upgrading to double-paned windows will help regulate indoor temperature, minimizing the effect of external agents on your home.
  2. External Noise and Climate – Another factor is the external noise and climate of where you live. If you live in areas with traffic noise, upgrading to double-paned windows can help reduce sound entering your home. Additionally, if your area is prone to extreme weather conditions (hot summers and cold winters), double-paned windows are the perfect insulator to protect your home from those extremes.
  3. The Money You Have – Of course, one of the most important considerations is the money you have available for the project. Windows can be pricey, so you’ll want to ensure you have a budget that can accommodate the cost. Additionally, if you’re planning on doing the work yourself, you’ll need to factor in the cost of materials and any tools you might need to purchase.
  4.  Your Home’s Age – Another thing to consider is your home’s age. If your home is older, it might not be worth replacing the windows unless they’re truly in bad shape. However, if your home is newer, it’s probably worth upgrading to double-paned windows to enjoy its benefits.

Also, Read – Is Your Home Losing Value Due to Low–Quality Old Windows?

How to Choose a Contractor for Window Installation?

Installing windows may seem like a daunting task, but with the help of a professional contractor, it can be a breeze!

  1. Make sure the contractor is licensed and insured. This protects you in case of any accidents or damage that might occur during the installation process.
  2. Get multiple quotes from different contractors. This allows you to compare prices and find the best deal for your budget.
  3. Ask for references from previous clients. This way, you can get an idea of the quality of work to expect from the contractor.
  4. Make sure the contractor has experience installing windows. This will ensure that the job is done correctly and efficiently.
  5. Once you’ve chosen a contractor, get everything in writing! This includes the cost of labor and materials, as well as the timeline for project completion.

Though seemingly insignificant, windows significantly affect your home’s energy efficiency. With the conventional one-pane windows, you could end up paying considerably higher energy bills than necessary. Upgrading to double-pane windows could save you hundreds of dollars each year.

Energy Advantage Roofing and Solar offers free estimates for those interested in learning more about how they can improve their home’s energy efficiency in Castle Rock, CO.

Give us a call today and let one of our experts help you make the best decision for your home and budget!