Hi all, About to mount my pio 436 onto my wall. Since discovered there is a 25mm gap from the front of the plaster to the thermal blocks. the plaster is 10mm of this. there dont appear to be any wooden battons, so i assume theres dabs of plaster which i can percuss out. A colleague suggested chemical anchors, but homebase dont sell them, and given the 25mm gap, id feel better with a 120mm screw to stop the leverage. I also plan to move house in the next year so dont want to use the mdf/plywood panel direct onto the thermal block routine. Even putting battons in would destroy some plasterboard. Which fixings have people used successfully, or more interestingly unsuccessfuly in this situation.