I'm in desperate need to build a soundproofing wall between my yard and my neighbours. I talked to different contractors and boiled it down to two options:
1. A standard "sandwich" insulated tin panel wall with "K-Flex Open Cell" rubber based panels glued to it facing the neighbours side.
2. A insulated wall made out of thin metal - filled with 8cm rock wool, with neighbours side being punctured with small holes to increase absorption (protected by a thin sheet of some kind of corse).
Now, first i want to know which material is better for absorption. Secondly i'd like to know what about degradation of the "K-Flex" panels from UV light from the sun.
Please share your opinions,