I wish to isolate all the walls (external and internal) with single brick veneer construction by pumping foam down the wall cavities.

I want the best possible acoustic (under Perth airport's flight paths on take-off for the 5-6am mining fly-in/fly-out flights) and thermal isolation. Just like an esky I would like to pump dense setting foam (polystyrene foam??) into the wall cavities from the roof space as I assume that foam is the easiest and cheapest way of doing it if I can source the appropriate equipment and materials. I do not want to have to pull off all the internal wall cladding to put bats in.

Any suggestions as to where I can source info on how to best do this and how to find the right equipment and materials would be much appreciated! Similarly if there is a better way of getting the best possible acoustic and thermal insulation please let me know.


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