reducing noise from chain driven garage door opener to apartment above. GDO is mounted to cement ceiling..need isolators
i looked into this a couple years ago, i saw in some GDO homeowner handyman site the same problem and i read that there was an isolation piece of hard rubber that would go between the cement ceiling and the GDO hardware that attached to the ceiling which would reduce the noise transmitted to the apartment above.
i looked a couple years back and couldn't find the supplier of this rubber noise dampener/ isolator.
Anyone have any ideas on how to quiet the problem, or is the chain too long and that is adding to the BANG when the GDO starts