The document discusses reasons for shower door glass explosions. Three experiments show that temperature differences alone do not cause explosions, but rather poor glass quality with impurities like nickel sulfide which can introduce micro-cracks. Improper installation can also increase stress and risk of breakage. The document advises consumers to carefully check glass quality, frame materials, hardware and installation when purchasing a shower door to reduce safety risks.

1. QINGDAO MORN BUILDING MATERIALS CO.,LTD
Your turnkey China tempered glass/laminated glass/insulated glass supplier
Add:Room A304,Shengxifu Road,NO.209 Weihai Road,Shibei District,Qingdao,China,266024 MARKETING@CNMORN.COM
1
Why your shower door glass exploded?
The shower room is loved by consumers for its advantages such as small space, but it is disturbing that the
shower door glass has a spontaneous explosion rate of 3‰,whether it’s frameless shower door or framed ones.
If you are not careful, your personal safety will be threatened. "Why does shower door glass explode?" The
quality and safety of the shower room has become the most concerned issue for consumers
CASE STUDY :People get hurt for glass explosion.
Two days ago, Ms. Wong gave the child a bath at home, but the family were all injured.
Ms. Wong "I was about to close the door and found that the door magnet didn’t work.Unexpectedly, just after
Ms. Pei’s husband’s hand was placed on the tempered glass door ,the glass exploded.The glass exploded
from the middle and all hit my back.
Ms. Wong’s back, legs and hands were all scratched by glass, and there were obvious wounds on her
husband's arms.
What caused shower door glass explosion?

2. QINGDAO MORN BUILDING MATERIALS CO.,LTD
Your turnkey China tempered glass/laminated glass/insulated glass supplier
Add:Room A304,Shengxifu Road,NO.209 Weihai Road,Shibei District,Qingdao,China,266024 MARKETING@CNMORN.COM
2
Why does the shower room explode? Many people naturally associate the shower room with the temperature
difference? Is it really? Next, use three experiments to prove, everyone pay attention to it~
Test 1:Is the shower room explosion caused by uneven heating?
In the hot summer, the highest temperature of the glass surface is about 65℃.
When hitting the tempered glass with a hammer a few times, and the glass was intact.
Next, start to heating the glass with a spray gun for 10 minutes until the glass temperature reaches 300°C, but
there is no problem.

3. QINGDAO MORN BUILDING MATERIALS CO.,LTD
Your turnkey China tempered glass/laminated glass/insulated glass supplier
Add:Room A304,Shengxifu Road,NO.209 Weihai Road,Shibei District,Qingdao,China,266024 MARKETING@CNMORN.COM
3
This also means that the temperature will not leading to tempered glass spontaneous explosion.
Now let’s see if the shower room bursts due to the alternating cold and hot in the bathroom?
We use cold water to pour directly on the glass in the high temperature of 300 ℃. the tempered glass
suddenly encountered cold water but smoked a little, but did not burst.
In fact, high-quality tempered glass encountered a heating process (650-700 degrees) and fast cooling
process,After a special process, the general temperature will not cause the tempered glass to explode.
Test 2:Is the shower room explosion caused by float glass quality?
The deciding reason for glass spontaneous explosion is the float glass used, because the float itself contains
impurities—nickel sulfide. The more impurities and bubbles, the higher the rate of spontaneous explosion.
Next, use low-quality tempered glass that is cheaper and has obvious impurities to continue the experiment.

4. QINGDAO MORN BUILDING MATERIALS CO.,LTD
Your turnkey China tempered glass/laminated glass/insulated glass supplier
Add:Room A304,Shengxifu Road,NO.209 Weihai Road,Shibei District,Qingdao,China,266024 MARKETING@CNMORN.COM
4
The tempered glass temperature has increased by 200℃, and pour cold water on the glass.
When cold water touched the glass, the glass broke and collapsed in less than 2 seconds.
There are sulfide stones in this glass. After the experiment, the sulfide stones cause micro-cracks in the glass,
which causes the glass to explode spontaneously.
Uneven heat and cold is the inducement of the glass explosion, and the fundamental reason is bad glass
quality. There are impurities in the float glass, which will change the stress of the whole glass and cause
spontaneous explosion when affected by the temperature difference. Therefore, do not buy cheap shower
room.
Test 3:Improper installation also leading to glass explosion.
Two pieces quality tempered glass, the same size and the same thickness,.
One piece without any processing.
The other one is reinforced at 4 corners, 3 loose and 1 tight, let’s see if there is any glass firmness
difference.When installing reinforced tempered glass, it is required to to have even force around it. But testers
deliberately tightened the screw in one of the corners to simulate improper installation.

5. QINGDAO MORN BUILDING MATERIALS CO.,LTD
Your turnkey China tempered glass/laminated glass/insulated glass supplier
Add:Room A304,Shengxifu Road,NO.209 Weihai Road,Shibei District,Qingdao,China,266024 MARKETING@CNMORN.COM
5
The tempered glass that has not been treated has been smashed a lot and no broken.
The reinforced toughened glass broke very soon.
Therefore, toughened glass that looks very durable will become very fragile as long as the stress structure
changes.

6. QINGDAO MORN BUILDING MATERIALS CO.,LTD
Your turnkey China tempered glass/laminated glass/insulated glass supplier
Add:Room A304,Shengxifu Road,NO.209 Weihai Road,Shibei District,Qingdao,China,266024 MARKETING@CNMORN.COM
6
This shows how important shower room installation is. Therefore, everyone must go to the physical store to buy the
shower room. Not only can you intuitively see the quality , but also the physical store can give you professional services.
Below is the full process of the test: https://www.youtube.com/watch?v=A8NsTLHvI1w
Learn more about glass spontaneous breakage:The reason of tempered glass self explosion
How shall we purchase the right shower door?
1. Check glass quality.
 A good shower room has transparent glass and no defects such as dots and bubbles.
 There is tempering logo on the glass corner.
2. Check aluminium profiles

7. QINGDAO MORN BUILDING MATERIALS CO.,LTD
Your turnkey China tempered glass/laminated glass/insulated glass supplier
Add:Room A304,Shengxifu Road,NO.209 Weihai Road,Shibei District,Qingdao,China,266024 MARKETING@CNMORN.COM
7
 Look at the hardness of aluminum
The thickness of the qualified shower room aluminum profile is above 1.2mm,The hardness of aluminum can be tested by
pressing the aluminum frame by hand. Aluminum with a hardness of 13 degrees or more is difficult for an adult to deform
by pressing it by hand.
 A good shower room has a smooth surface, no chromatic aberration and perfect surface treatment.
3. Check the hardware
The slider and the track should be closely matched, with a small gap, and not easy to fall off when impacted by
external forces to avoid safety accidents. Use 304 and even 316 stainless steel hardware to ensure quality.
4. Check shower door water tightness
The main checking points of the water tightness of the shower room are
 The connection between the shower room and the wall
 The joint between the door and the door
 The connection between the shower room and the stone base and the bottom basin
 Check the sealability of the rubber strip and the rubber strip

8. QINGDAO MORN BUILDING MATERIALS CO.,LTD
Your turnkey China tempered glass/laminated glass/insulated glass supplier
Add:Room A304,Shengxifu Road,NO.209 Weihai Road,Shibei District,Qingdao,China,266024 MARKETING@CNMORN.COM
8
More details ,please refer to our post:How to select the right bathroom shower door
Morn is your quality shower door glass manufacturer and supplier in China,we work with CSG,XYG high
quality raw materials and precise processing to avoid crackles,scratches,or any other defects that causing
possible glass breakage,contact us if any requirement.
Contact us:
Qingdao Morn Building Materials Co.,Ltd
China HQ: Room A304,Shengxifu Road,NO.209 Weihai Road,Shibei
District,Qingdao,China,266024
Sales Email: marketing@cnmorn.com
Technical support: han@cnmorn.com Mobile/Wechat: 0086-17705464660
Website:https://www.cnmorn.com/ https://www.mornglass.com/