My daughter has asked me to fix a Vogels wall mount bracket in her lounge and then attach her Sony 40" LCD box to the bracket. No problem but I am somewhat concerned about the fixings supplied. The wall is double skin brick/cavity/block. The blocks are very soft, Thermalite or similar I think, and 100mm thick. The fixings supplied are plastic plugs with 8mm screws, 80mm long. These fixings seem to be of decent quality. The fixing centres for the bracket are approx 220mm horizontally x 100mm vertical. The bracket has a single arm that allows the box to swing out up to 90 degrees from the wall. The tv box weighs about 30kgs I'm a bit worried that the weight of the box on the arm will be more than the 4 fixings can support. This is not the sort of thing where you get a second chance !
I was wondering about either more substantial fixings but wouldn't know what to go for (I suppose shield bolts might be an idea), longer screws/plugs like frame fixings or fixing timber to the wall an attaching the bracket but this is the least preferred option.
Any thoughts or ideas please?
Nick.