The glass for windows and doors remains the key for your purchase of windows and doors.

The reason is the glass plays a critical part for the quality of windows and doors.

However, how many types of glass are there? And which one fits the best for our case?

Come read and find your answers here.

Types of glass for windows and doors

Not all windows are the same. If you want to install windows in your house, you may have noticed that they come in many styles and designs.

In addition to a wide selection of frames, you also need to choose the type of glass for windows and doors.

And we understand your situation as a customer, the options can seem unfamiliar and confusing.

Therefore, we will classify the most popular glass in the market for your convenience.

Today we are going to talk about four kinds of popular door and window glass. They are float window glass, obscured window glass, obscured window glass and double glazed windows. All three types of glass are widely used in industrial, architectural and residential applications.

Float glass

Float glass is actually very common. And many different industries have to use float glass. For example, the high-rise building industry, the automobile industry manufacturing windshield and solar panels.

Its name comes from a process created by Pilkington, a British glassmaker. The special feature of this process is that the product “floats” on the molten metal bed of large metal plates. Therefore, this is why the name of the float glass is like this.

The basic composition of float glass includes 60% sand, 20% dolomite lime and 20% sodium sulphate. However, the manufacturer added broken glass. Broken glass is also called cullet. The purpose of adding cullet is to further accelerate the melting process. This can reduce energy consumption in the production of float glass.

When production is complete, float glass becomes an ideal choice for smooth and low-cost window designs. Float glass can save energy, provide safety and security, and reduce external noise. Moreover, we can use float glass to decorate houses and protect privacy. Also, fire safety is very important in interior design. Float glass can meet your needs.

With so many advantages, it is obvious why the popularity of float glass can stand the test of time.

Laminated glass

Laminated glass is a kind of glass with high safety performance. In this way, it is often used in places where it is often hit or where glass may shatter when it falls. You can find it in the windscreens (which, together with the float glass, form part of its structure) storefronts and doors. After all, it’s dangerous if the glass breaks into pieces. Therefore, the main concern of laminated glass is to reduce the possibility of injury.

Interestingly, the use of interlayer makes laminated glass have high safety. The interlayer is made of polyvinyl butyral (PVB) or ethylene-vinyl acetate (EVA). And there’s no doubt that it’s crucial because it keeps the glass together. Even when the glass breaks, it doesn’t break everywhere. Besides, the interlayer also improves the sound insulation level of windows, especially when you use EVA. Also, EVA and PVB can block ultraviolet rays. The thermosetting EVA interlayer can block up to 99.9% UV.

Another important use of laminated glass is to prevent hurricane damage. Especially in areas that are geographically vulnerable to hurricanes. Also, laminated glass is a common choice of materials for skylights. This is because it reduces the risk of injury from falling from the ceiling or from any other damage.

Obscured glass

Letting light into the room is the main function of windows.

In some cases, how to protect privacy is an issue. Dark glass windows allow light to pass through. But the light has been processed, and the brightness is reduced. So that the light into the room is not enough for people to see things completely.

Therefore, it is very important to choose the appropriate finish. The choice of finishes includes sanding, etching, pattern or coating.

You can see the screened windows in the bathroom and the front door. Sunshade glass can sometimes be used to extend so that the window overlooks a neighbour’s window or is close to the street.

According to the specific use of the scene, people choose to use obscured window glass may be an architectural regulation. However, the most common use is the bathroom because it protects people’s privacy.

Generally speaking, the level of obscured window glass is 1-5. The higher the level, the higher the level of privacy protection. For example. A level 1 obscured window may not provide you with any privacy protection. But, level 5 provides maximum privacy.

Therefore, level 5 obscured glass window is most suitable for use in the bathroom. That’s because even if you’re shooting at close range, you can hardly see what’s in the bathroom.

Double glazed glass

At present, double glazed glass is a very popular choice for residential buildings.

The main advantage of double glazing is that they provide good thermal insulation. And this will make your home more energy-efficient and reduce your water and electricity bills.

Plus, double glazing also provides sound insulation to help block external noise, such as road traffic. Compared with single glass window, the double glass window is much better in heat insulation and noise reduction.

Double glass is actually a piece of glass separated by two gaps. In short, the gap contains air or pressurized gas, such as argon.

Besides, when you use argon, it prevents condensation on the windows.

The structure of the double glass window is similar to that of laminated glass.

However, the main difference is that the double glazing has a considerable gap between each pane. But laminated glass is bonded together with PVB or EVA interlayer.

When you buy double glazing, you should consider the energy level of the double glazing. The energy level is also called the U value.

The lower the value, the better the insulation of the window. Just as important as the energy level is to make sure your double glazing is well sealed.

Also, don’t forget to ask professionals to install double glass windows. This ensures the quality, service life and overall performance of the window.

There are times you might feel worried about the safety of the glass for windows and doors. It’s probably not the first time you read the burglaries from the news. Or you might hear the stories of the sharp glass pieces hurting the lovely children.

To prevent cases like those, you are going to need unbreakable glass.

glass for windows and doors_01

Unbreakable glass for windows and doors

What is unbreakable glass for windows and doors?

Laminated windows and polycarbonate windows are two types of “unbreakable” glass:

Laminated window: a window in which a piece of transparent plastic is sandwiched between two pieces of ordinary glass

Polycarbonate window: a pure plastic “glass” window. It is made of thick, strong and flexible polycarbonate.

Both types of glass windows are strong. They are more durable and lighter than ordinary glass windows.

Besides, laminates and polycarbonate windows provide a good separation of the house.

So, how can “unbreakable” door and window glass ensure our safety?

Polycarbonate Unbreakable Glass

As mentioned earlier, polycarbonate windows are made of plastic.

But polycarbonate windows are harder to break than standard glass windows.

In fact, some people estimate that the impact resistance of polycarbonate windows is 200 times higher! Compared with standard glass windows, they provide better protection against theft and weather disasters.

Laminated Unbreakable Glass

The working principle of a laminated glass window is basically the same as that of a polycarbonate window.

If the laminated glass is hit big enough, the outer layer of glass will break. In some cases, it will shatter, but the plastic polycarbonate film stuck between the panes will remain intact. This helps to keep your home safe.

Although “unbreakable” glass helps prevent entry. However, they cannot prevent all thieves from entering houses or businesses.

Then you can upgrade your existing windows with unbreakable glass polycarbonate!

What if you want to improve the security of your existing windows? You can!

And some manufacturers now make polycarbonate products that can be attached to existing glass windows.

These sheets reinforce existing standard windows and prevent the glass from breaking.

Install the unbreakable glass for the home or for business?

For families and business owners, unbreakable glass windows are a good choice.

After all, laminated glass and polycarbonate plastics make homes or businesses safer and more energy-efficient.

Unbreakable glass products are very suitable for customers with the following demand:

  • Prevent glass from breaking or breaking
  • Want to improve security
  • Needs for energy efficiency
  • Improve sound insulation

These two types of unbreakable glass are also ideal for families and businesses in storm-prone areas.

For coastal homeowners affected by hurricane season and residents experiencing tornadoes in the Midwest and south, unbreakable glass windows are their best choice.

Can I replace just the glass for windows and doors?

There are many reasons for the broken windows, such as temperature fluctuations, natural disasters, human errors and so on. However, you paid for an energy-efficient three-layer window, and now one of them is broken.

As you stare at the broken window, you may wonder, can I just replace the broken piece of glass, or do I need to replace the entire window?

Find out the solutions below.

Replacement options of glass for windows and doors

Depending on the problem, you have several options for replacing the window glass.

There are several options for replacing glass, but windows perform best if broken glass is replaced with the same type of glass.

If there are cracks in the panes, the window company can remove the broken panes and replace them with insulated glass units or IGUs.

After replacing the IGU, remove the broken panel, clean the frame, eject the IGU and seal it in place. Stop the airflow with caulking or weatherstrips, and your Windows will be as good as new ones. This method requires only a fraction of the price of replacing a window.

If the budget is tight, you can dismantle and replace the broken glass yourself. But it’s tricky and dangerous. If you need a special type of glass (e.g. Low-E coated glass), you need to order it specifically from the manufacturer.

When a problem gets into your windows during the warranty period, contact the manufacturer. Replacing the window glass with IGU may inadvertently void the warranty.

What About Energy Saving?

Many homeowners have a common idea. They think it’s worth replacing windows completely because it’s more environmentally friendly and energy-efficient. However, the idea is wrong. Repairing structural problems and selecting insulated glass units (IGUs) are 70% more efficient than replacing entire windows.

Also, no matter which IGU you choose, your energy bill will be reduced, which can save you up to 50% of your energy costs.

Moreover, options such as Low-E IGUs provide excellent thermal insulation.

Is it cheaper to replace the glass for windows and doors than the whole thing?

In fact, replacing the entire window costs 50% more than simply replacing the glass.

So, replacing the glass for windows and doors is definitely cheaper than the whole thing.

Full Frame vs Insert Window Replacement

Replace the existing glass with transparent, professionally manufactured insulated glass units (IGUs). This is a faster, simpler and more economical solution than replacing full-frame windows.

This solution is used in many cases, which you might have thought impossible before:

Broken glass

Replacing glass to eliminate broken panes is a faster and cheaper option than full window frame replacement costs.

Weird windows

Remove dust, dirt and paint, and adjust hardware and components on stuck or insecure windows. However, it costs only a few cents to replace the windows completely.

Worn or rotten frames

You can repair and replace rotten window frames and upgrade glass quickly with new inserts. This can protect the atmosphere and value of historical houses.

Foggy windows

Cracked seals or “cracked” windows can cause coating oxidation or condensation between panes. You can solve this problem quickly and easily with a new insert.


Caulking and weatherstripping, installing IGUs is easy and cheap.

Glass-Only Replacement with IGUs Offers Clear Advantages:

glass for windows and doors_02


In this article, we discussed the types of glass for windows and doors, which are as follows:

  • Four types of door and window glass,
  • Two types of “unbreakable” glass for doors and windows,
  • Two ways to replace windows and doors glass,
  • It’s cheaper to replace the glass than the whole thing

If you find this article useful, don’t forget to share people with more people. And keep up with the latest articles. You will learn more about types of glass for windows and doors.