Acoustic Glass
Acoustic Glass
High sound transmission loss will decrease the noise significantly and create silent and quite environment.The concrete wall,floors in buildings are thick and have good sound transmission loss in buildings.As the thinnest part of the building ,glass is usually only several milimeter thick,some insulated glass are 24mm thick,glass has been the weakest point of the building overall acoustic performance，MORN offer acoustic glass & soundproof glass solutions.
FACTORS AFFECT GLASS ACOUSTIC PERFORMANCE
Glass thickness,PVB thickness,Spacer thickness in IGU affect the overall glass acoustic performance.
Glass thickness,or glass unit weight per square meter is the deciding factor that affect the overall soundproof performance.
Whether it’s single piece monolithic glass,laminated glass,or insulated glass,the thicker total glass thickness,the better sound transmission loss.Sample STC:
| Glass Configuration | 3 | 10 | 33.1 | 55.1 | 4-16-4 | 10-16-4 |
|---|---|---|---|---|---|---|
| STC /Db | 28 | 36 | 28 | 32 | 30 | 36 |
| OITC /Db | 22 | 21 | 28 | 32 | 24 | 31 |
PVB or SGP,EVA, these materials used in laminated glass are soft materials with uneven surface,it can decrease the vibration and work as good barrier for sound transmission.
| Glass Configuration | 10mm | 55.2 Lami | 55.2 Acoustic PVB | 12mm | 66.2 Lami | 66.2 Acoustic PVB |
|---|---|---|---|---|---|---|
| STC /Db | 34 | 35 | 39 | 36 | 36 | 39 |
| OITC /Db | 32 | 32 | 34 | 33 | 32 | 34 |
Normal laminated glass or insulated glass,the glass panels used are always the same,while unequal thickness glass used in these combinations will change the glass sound transmittance loss even though the effect is not good as expection.
| Glass Configuration | 64.4 | 55.4 | 46.4 | 4-16-6 | 5-16-5 | 6-16-4 |
|---|---|---|---|---|---|---|
| STC /Db | 36 | 35 | 36 | 34 | 33 | 33 |
| OITC /Db | 32 | 32 | 32 | 28 | 28 | 28 |
The spacer thickness used in insulated glass will also affect the STC,bigger spacer will have better STC.That’s the reason why many theaters need thicker insulated glass to get better noise control effect.
| Glass Configuration | 6-12-6 | 6-16-6 | 6-20-6 | 6-24-6 |
|---|---|---|---|---|
| STC /Db | 34 | 35 | 34 | 33 |
| OITC /Db | 29 | 29 | 28 | 28 |
Argon used in the insulated glass not only protect the glass coatings,increase the thermal insulation perfromance,but also decrease the glass STC.As argon is inert gas,the sound conductivity is also lower than normal air filled insulated glass.
ACOUSTIC SOLUTIONS
Create Silence With Morn Acoustic Glass Solution
After knowing the detailed factors that affect glass acoustic performance,here is Morn ‘s acoustic Solutions.
Increase the glass thickness if possible.
Whether it’s heat treated glass,laminated glass,or insulated glass,increase the glass total thickness to get better acoustic performance.
- Even though the interlayer thickness don’t affect the glass STC, laminated glass is still the priority option in enhancing the glass acoustic and safety performance.
- Try to use un-equal glass panels in laminated glass,this will bring difficulty into glass processing.
- Taking advantage of professional acoustic PVB products.Acoustic PVB from EASTMAN is highly recommended.
- The Insulated glass include 2 or more pieces glass panels,the spacer also works in reducing glass STC,12A and 16A is highly recommended.
- Argon is recommended to increase glass life time,but also defend the noise outside.
Combining different glass configurations,laminated insulated glass,insulated laminated glass, and even double laminated insulated glass to get the best soundproof effect.
RESOURCES
Check our acoustic related Blogs
The quite pleasant cooperation with Morn BM helps us winning more and more projects,Morn BM’s professional response is faster than light,they can always find the right materials we need with good price and good service,Morn makes continuous fast growing possible.
We have being working with Morn BM for several years,whether it’s glass,aluminium ,hardware,steel products,Morn BM has being our only supplier in China.I love the mutual benefit work with Morn,always high quality,always best service,always my best friend.