What Is Glazing?

Glazing is the process of putting a coating over glass to protect it. It is commonly used for windows and doors, but can also be found in safety barriers, storefronts, and other commercial glass applications. There are a few key points to keep in mind when glazing. First, the right putty is essential. The wrong one can make the entire job a mess (and not in the good way).

There are many different types of putty and they all have their strengths and weaknesses. When it comes to window glazing you want something that will adhere to the glass and frame with little effort and then be easy to clean up afterward. It should be able to withstand the weather, sunlight, and moisture. It should also be pliable and able to be shaped easily with the putty knife.

Another important thing to consider is the thickness of the putty. A common mistake is to pick a putty that is too thin or stiff. You want it to be soft enough that you can work with but thick enough that it will stick to the glass and frame without letting go or falling off afterward. The best way to gauge this is by removing one of the window stops and sticking a skinny flat item between the glass and framing. This will let you see how thick the gap is and will help ensure you use the proper thickness of putty.

Finally, it is essential to use the right tool. A putty knife that is specifically designed for glazing will ensure the job goes as smoothly and quickly as possible. There are several different options for these, but we recommend picking a professional grade putty knife from a glazier supply store or online. This will give you the best control over your lines and precision.

One last note, it is recommended that you prime the rabbets before you glaze with oil-based primer or shellac. This will prevent the oils in the putty from sucking the wood dry and shortening it’s life considerably.

In conclusion, glazing is a delicate art that requires some practice to master. There are a lot of things to keep in mind and be aware of when working with this type of glass, but it is certainly worth the effort when you see the finished product. The right glazing can help your glass perform well, meet safety standards, and look great at the same time.

If you are looking for more information about Glazing or would like to speak with a USGA representative please feel free to contact us. We’d be happy to assist you in determining the proper glazing and glass for your application.

USGA Inc. is an industry leading manufacturer of a broad range of glass and aluminum products. USGA is committed to providing innovative solutions that balance aesthetics, functionality, and cost-effectiveness. For example, our frameless glass railing systems are supported by sturdy glass clamps that require a bit more thickness than standard glass to handle the load.

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