Hi all, what is the regulations with fitting smoke detectors to solid plasterboard ceilings, existing system has cables down through hole in ceiling, rawlplugs and screw to hole base in place. Is this acceptable. I know a steel u box and glands are the way to go on suspended ceilings , but what to do if the space above is not accessible ,can't fix U box to plasterboard from the top even if attic space can be accessed. Thanks
↧