![]() ![]() But is the difference more pronounced with thicker pieces?Ī ½” sheet of regular glass will have an STC rating closer to 36. Plexiglass of the same ¼” thickness has an STC rating of just 29.Ī small difference in the STC rating of just two points isn’t going to make much audible difference. A single pane sheet of ¼” glass has an STC rating of 31. Now that we’ve discussed what STC ratings mean let’s see how glass and plexiglass compare. STC Ratings: Plexiglass vs Glass Soundproofing STC ratings of 50 and higher are used in professional studios and other applications where a quiet environment is a must. With a higher STC rating of 40, loud speech would be heard as little more than a murmur. With a low STC rating of 25, you would be able to easily hear and understand normal volume speech through your material. The higher a product’s STC rating, the more effective it is at soundproofing. ![]() It’s a measurement of how well different materials block sound from transferring. It will not ring the way glass will, so it’s the better choice when it comes to damping. Plexiglass, on the other hand, is not very resonant since it is soft. This will be more pronounced at certain frequencies. ![]() Glass is naturally very resonant, so a glass window will also be resonant. Resonance is the ringing sound you hear when you tap on a glass with a metal spoon. Dampingĭamping is about curbing resonance. Plexiglass is much softer and more flexible than glass though, so it has a slight edge in this department. Since neither glass or plexiglass is soft, neither provides much of an absorption effect. AbsorptionĪbsorption is when a soft medium can effectively negate the energy of a sound wave by absorbing it. This will result in better soundproofing since it’s harder to vibrate and so its harder to cause the sound transfer. Glass and plexiglass are both available in many thicknesses, and thicker panes will be better at blocking sound.īetween a piece of plexiglass and a piece of glass that are both the same thickness, the glass will be denser and weigh more. The more mass the solid medium has, the harder it is to move, thus reducing the amount of vibration and sound that is transferred. Sound waves transfer through solid mediums by causing vibration. Soundproofing Principles Applied to Glass and Plexiglass Mass Absorption Damping STC rating What is an STC rating? STC Ratings: Plexiglass vs Glass Soundproofing Price Durability Acoustic Glass and Plexiglass Is Plexiglass A Good Sound Barrier? How to Use Plexiglass for Soundproofing Soundproof Window Inserts Magnetic Acrylic Soundproof Windows Soundproof Storm Windows Plexiglass Alternatives Soundproof Curtains Window Blinds DIY Window Plug Conclusion Soundproofing Principles Applied to Glass and Plexiglass Mass ![]()
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