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PostPosted: Mon Jul 23, 2018 10:55 pm 
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Hello all,

Helping some younger friends out here, they have added some party wall soundproofing using resilient bars and two layers of plasterboard etc.

They now want to add a small flush mounted electric fire but as they weigh around 10 -15 kg they are not sure if that will cause any problem with overloading the bars ?

The location they want is right in the middle of a board so they cannot screw onto the timber stud and they do not really want to open up the wall to reinforce things for the fire.

(doubt it would be a problem for the plasterboard itself as we have radiators hung on them ok. )


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PostPosted: Tue Jul 24, 2018 7:31 pm 
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Ideally you should have a patress (12mm OSB or plywood) in the wall behind where the fire is required. Failing that as the boarding is newish and in good order (?) I'd suggest that you use "umbrella fixings":

Attachment:
Rawlplug hollow wall anchior 001_01.jpg
Rawlplug hollow wall anchior 001_01.jpg [ 9.76 KiB | Viewed 371 times ]


making sure that the holes they are inserted into are a good tight fit and that you use the appropriate setting tool to get the maximum fix strength:

Attachment:
Rawlplug AT-88 setting tool 001_01.png
Rawlplug AT-88 setting tool 001_01.png [ 76.31 KiB | Viewed 371 times ]


Two of those should handle the weight you are talking about as it should not project too far out from the wall - for anything heavier I'd maybe suggest alternatives, but I've hung Spur shelves carrying a well over 100kg on those things (on 20 fixings, it has to be said) and they do work providing you don't want to come too far out from the wall. The 5 x 51mm size should be right for 2 x 12mm boards and I'd recommend paying slightly more and getting either Rawl or Fischer ones as opposed to the no-name ones that Toolstation sell (they also do the good ones). If you want a countersunk head screw rather than the flat/round head supplied with the fixing, then countersunk head machine screws are readily available in the appropriate lengths from Screwfix, etc

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For this message the author Job and Knock has received gratitude : george29
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