Fixing to insulated plasterboard?

[jjcd]

Hi,

I have a new extension which has 70mm dot and dabbed insulated plasterboard. I need to attach two fairly heavy (900mm and 1000mm wide) kitchen wall cupboards.

What is the best fixing for this? I assumed Fischer Corefix but they say only for depths of a maximum of 45mm between the plasterboard and block wall behind.

I wondered if i could make my own longer Corefix by cutting down some tube and buying longer screws but thought there must be a product for this..

Any suggestions? Thank you!

[pghstochaj]

Assuming no timber joists to fix to and masonry behind the insulated plasterboard, I would core out some of it and put some wooden packers into the cores fixed to the masonry.

[wolfracesonic]

Assuming the cupboards hang on two short metal hanging brackets, scrap them and buy some continuous rail.



This will allow you to use a lot more fastenings, something like these, nylon frame fixings. If possible fix a bearer for the bottom of the unit to sit on, taking some of the weight, if you can do so unobtrusively.

[BigRickus]

Drill through and resin some studs in?