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Question:

Which is better sound insulation material, melamine foam or polyurethane foam?

how they differ? and their advantages and disadvantages with each other? is there any better sound insulation material other than the two mentioned above?

Answer:

Two questions about rolling joints in the DIY section?You are clearly underage!and no,they wil taste horrible!
Be careful hereCheck to see exactly where the paper comes fromIf it came from China, I wouldn't even try it.
No, writing paper is bleached and chemically treatedYou really don't want to breath all that into your lungs.
You can, but I wouldn'tIf you do, write a legal disclaimer on the paper indicating that you are not responsible for any injuries or harm incurred by doing soWho wants to go through some leagal battle suing yourselfOnly the lawyers win that one.
Melamine foam? That's a neat trickAre we making cabinets and shelving out of foam now? Sure would make them easier to transport and install!! Polyurethane foam is a very good sound insulator, because of its closed cell natureBut make sure you are using polyurethane (the pink or blue stuff) and not polystyrene (the white stuff that crumbles easily)In fact, you can seal the joints in the poly sheets with the foam insulation that comes in a can and have a really soundproof environmentHowever, if you are considering starting up a punk rock band in your garage, please be considerate of your neighbors.

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