Spray foam is great for air-sealing and insulating, but there are better options for making a building quieter.
It's a bit more complicated than planting a row of shrubs.
How do you make a downstairs apartment quieter when the apartment upstairs is inaccessible?
Options include screwing unglued subflooring down, acoustically sealing seams and gaps, and installing a sound-mitigating ceiling below.
Special mounts, acoustic blankets, and properly sized barriers are all part of the solution.
