reducing noise from chain driven garage door opener to apartment above. GDO is mounted to cement ceiling..need isolators

, when GDO is opened, the initial start causes a big bang , which abruptly  awakens  the people in the apartment  above. i  am not the garage user or apartment  resident. however it seems there is a relatively easy solution to isolate the noise.  When i had my GDO installed , i knew of these problems and opted for a belt driven since it is quieter, but for all i know the , a new resident could move in and i could be an annoyance. She had the installers return but , they just know how to follow the instructions. 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

Question by escapefromyonkers   |  last reply