When choosing windows for a building project — whether it’s a shed, cabin, or home — the type of glass you select plays a major role in performance, comfort, and efficiency.
Two of the most common options are single pane and double pane glass. While they may look similar from the outside, the difference in how they’re built and how they perform is significant.
What Is Single Pane Glass?
Single pane glass is made from one solid sheet of glass within the window frame. This style was once the standard for all windows, but today it’s mainly used for non-insulated or seasonal structures.
Key Features:
- One layer of glass
- No insulating air space
- Allows direct transfer of heat and cold
Advantages:
- Lower cost
- Lightweight and easy to install
- Suitable for Outbuildings, Sheds, Garages, Storage Spaces
Limitations:
- Very poor energy efficiency
- Minimal noise reduction
- Susceptible to condensation and temperature swings
Best For:
Sheds, garages, barns, or unheated buildings where insulation isn’t needed.
What Is Double Pane Glass?
Double pane glass, also known as an Insulated Glass Unit (IGU), features two panes of glass separated by a sealed space filled with air or gas (often Argon). This design dramatically improves thermal insulation and overall comfort.
Key Features:
- Two panes of glass with a spacer in between
- Sealed air or gas layer acts as an insulator
- Available with energy-efficient upgrades like Low-E coatings and Argon gas fills
Advantages:
- Significantly better insulation
- Reduces heat transfer and outside noise
- Helps prevent condensation
- Can lower heating and cooling costs
Limitations:
- Slightly higher cost upfront
- Heavier than single pane units
- Requires professional sealing during manufacturing
Best For:
Cabins, homes, offices, and any building where energy efficiency and comfort matter.
How They Compare
| Feature | Single Pane | Double Pane |
|---|---|---|
| Glass Layers | 1 | 2 |
| Insulation | Low | Med-High |
| Energy Efficiency | Poor | Good-Excellent |
| Sound Reduction | Minimal | Good |
| Condensation Control | Low | High |
| Cost | $-$$ | $$-$$$ |
| Best Use | Unheated sheds, garages, storage spaces | Homes, cabins, year-round spaces |
Why the Difference Matters
The space between the panes in a double pane window acts like a thermal blanket — slowing the movement of heat and cold. In summer, it helps keep cool air inside; in winter, it holds warm air in.
For builders and homeowners, this translates into:
- Lower energy costs
- More stable interior temperatures
- Better comfort year-round
Single pane glass simply can’t provide that level of performance — but it still has a place in budget builds or non-climate-controlled structures.
Choosing What’s Right for Your Project
If you’re working on a basic shed or storage building, single pane glass can be a practical, affordable choice.
If you’re building a living space, cabin, or any climate-controlled structure, double pane glass is the smart investment for long-term comfort and energy savings.
At W.E.H. Supply, Inc., we offer both single and double pane window options in aluminum and vinyl frames — along with performance upgrades like Low-E coatings and Argon gas insulation for maximum efficiency.
Need Help Choosing the Right Window?
Our team is here to help builders, dealers, and contractors find the ideal products for any project — from backyard studios to luxury cabins.
Contact us today to learn more about our window options and see how service meets quality at W.E.H. Supply, Inc.