How to apply green glue to drywall

This video shows how to add a second layer of normal drywall to existing drywall using Green Glue. However, most people recommend that you use two tubes of Green Glue per 4x8 sheet of drywall, and the guy in this video used only one tube. So ...use two tubes and really slather it up!

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Combining QuietRock and Green Glue together

Two great products work great together. As I've mentioned before, I'm experimenting around with ways to reduce some of the noise problems in my apartment on a tight budget. I think I've found the best combination to date: adding a layer of QuietRock 510 over an existing layer of gypsum drywall with a layer of Green Glue inbetween. This was sort of the best of both worlds: taking a pre-made, sound-dampened drywall and then adding it over a powerful, viscous layer of glue....onto drywall that was already on the wall studs. No demo needed. In this project, I basically added two sound-dampening layers to the original 1950s drywall (one layer in the QuietRock and the other layer created by the Green Glue) to address " flanking noise ": feet, furniture, and shoes pounding on the bare floor of my downstairs neighbors' apartment. The amount of banging, bashing, and foot-stomping sounds coming from their very "wooden" apartment has been severe, and I...

How to measure decibels and frequency with the Decibel Meter app

Frequency matters When you're dealing with a noise issue, the frequency of that noise is just as important as the decibel level. A decibel is the loudness of the sound, and measuring decibels can alert you when a sound is more than just a nuisance, but dangerous to your health. However, decibel levels on their own don't tell the whole story. The frequency of the sound is also very important. The frequency is a measure of how many sound waves per second are produced by a sound, and determines its pitch. A low-frequency sound might be really annoying, but it might not be that loud. The lower frequencies are typically below 150 Hz, and often sound like a deep bass sound that's not necessarily loud, but the vibrations from that sound can travel through the entire frame of a building and disrupt sleep or cause stress. Knowing both the decibel level and the frequency of an unwanted sound can help you determine the right soundproofing solution. For example, a low-frequency nois...

Why a decoupled ceiling might not eliminate all noise

A decoupled ceiling might eliminate most of the noise between floors, but not all of it. If you're thinking of decoupling a ceiling in your home or apartment, you might not eliminate all the noise between two floors. This doesn't mean that it's not worth doing. It means that resolving noise issues in your home might be an iterative process. Because after you address one noise source, you might discover another one. Noise paths A noise path is how a noise enters another space. For example, this could be through the air or through a thin wall, through the joists and studs in a building frame, through a wall outlet, or through a vent. You might soundproof one noise source only to realize afterwards that there were other points of entry for that noise. So if you're thinking about removing your existing ceiling and decoupling it with soundproofing materials, keep in mind that some types of noise might be coming from different sources via different paths. You might reduce o...

soundproofing for urban people

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