Is It Safe To Use Cold Glass In The Oven?

Can You Put A Cold Glass In The Oven?

Using cold glass or really any other form of glass in the oven stirs up a bit of a conversation whenever it comes up, it’s not a hot topic but it does come up, let’s help clear the air.

Trying out kitchen appliances can be fun, especially for people who love cooking. Apart from being fun, kitchen appliances were made to make work easier for you in the kitchen and a lot of people can testify that this has been true.

No, you should not put a cold glass directly into the oven; it is advised that you allow the glass to rise to room temperature first before placing it into the oven.

Every kitchen appliance comes with safety caution notes, this is why it is advised that you read the manual that comes with your appliance before using it.

An oven is a common appliance in many homes and although a lot of people use it, it has been discovered that a lot of people still have questions about what to put in the oven and what not. A common question relating to this is can you put a cold glass in the oven? We did some research and here is what we found.

Putting Glass In The Oven

Glass is made of sand and some other particles; the process of making glass includes heating sand (maybe not the usual one) to a high temperature. Regardless of what glass is made up of, there are many things to note when it comes to using glass in the fridge and the oven.

The answer to the common question of can glass be used in the oven is yes, glass can be used in the oven, however not all glass can be.

The type of glass that can go into the oven is tempered, borosilicate, and Pyrex glasses, these glasses are considered safe for oven use. How then can you identify them? Glass that can be used in the oven usually carries the label, “oven-safe”. If the glass you intend to purchase does not have this label, then it is not oven safe.

woman opening oven
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Moving your glass from the fridge to the oven is dangerous. This is because when you do this, your glass, experiences thermal shock, as a result of the sudden temperature changes.

Regardless of how thick your glass is, if it is exposed to sudden extreme temperature changes, it can shatter. It is commonly advised that when you bring your glass out of the oven, you let it sit until it moves from cold to room temperature, then you can place it in the oven.

Safer Glass Alternative to Use In The Oven

Here are some tried and tested materials that can go in your oven without issues.

1. Silicone

Silicone pans can be used at high temperatures, they can stay safe for up to 450 degrees F. where glass is not an option, and we recommend you try silicone products.

2. Tempered Glass

Tempered glass is also, commonly known as toughened glass. This glass can be used in the oven, alongside a few others. Although tempered glass is safe for oven use, it also has its cautions.

3. Stoneware

Apart from glass, another alternative to be used in the oven is ceramic. Ceramic is safe in the oven, as long as the oven is within the range of 350 to 400 degrees F. 

Before purchasing a ceramic for oven use, ensure they are without adhesive designs, not glazed and you see the “oven-safe” label on them.

Can You Put A Cold Glass In The Oven?
Image: Envato Elements

4. Metal

Although not all metals are oven safe, this is because they react chemically when placed at high temperatures. However stainless steel and cast iron are known to be ideal for oven use, they are also known to not alter food flavor.

Why Did My Glass Break In The Oven? 

Glass breaking is one thing a lot of people have experienced, but not many are aware of why this happened. Although there are a lot of reasons your glass is breaking in the oven, here are our top three reasons.

1. The Wrong Type Of Glass

A common mistake made by most people is forgetting to check if their glass is safe enough for oven use. If your glass shatters after being placed in the oven, chances are that it is not safe for the oven and shouldn’t be used there. Only tempered glass is allowed in the oven, do not place non-tempered glassware in the oven.

2. Temperature Range

Reading the manual of your glassware is important because you get to find out what temperature range your glassware can stay in. temperature range may differ for different brands.

3. Shock

Humans are not the only ones who experience shock as a result of the temperature, your glassware does too. Placing your glassware from the fridge into the oven or from the oven into cold water can give it thermal shock, which will result in the breakage of the glass.

Frequently Asked Questions

How Can You Tell If The Glass Is Oven-Safe?

Most oven-safe glassware has a symbol or label right at the bottom of the glass. If you do not find this label on your glassware, then it is properly not oven safe.

Does Glass Explode In Heat?

Yes, although glass can be safe when exposed to heat for a while, over time, it may thermal break when it becomes too hot.

Can I Put A Cold Glass Dish In The Microwave?

No, you cannot place your cold glass dish in the microwave; the same rule applies to both microwave and oven. The cold glass will shatter as a result of thermal shock.

What Do You Do When Glass Break In The Oven?

If you have shattered glasses in the oven, the best way to do a thorough cleaning is to clean with very soft bread. The glasses will cling to the bread and this way, you can be sure everything is out.

What Temperature Does Glass Break In The Oven?

When placed in the oven, it is common that thin glass will break at 302 to 392 degrees F. some glassware can endure heat up to 500 degrees C. Oftentimes, the glass loses its shape after a long time, it is recommended that you do not place your glass in the oven for too long.

Final Thoughts

The oven is one of the best kitchen appliances to be in existence; however, it is also one that should be used with caution.

Although glass is beautiful and you can be sure it won’t have any chemical reaction on your food, it is not so safe for the oven, except, of course, it is tempered.

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