Dot Dab Celotex, then bond plasterboard

[visionset]

I'm about to start one of several room insulation projects. Having done a little in the past, my preferred system is to dot and dab rather than batten Celotex or similar. However, in order to keep the costs down I'd like to use separate insulation and plasterboard (ie not plasterboard backed all in one). It seems easier to get hold of seconds insulation this way, and lessens the risk of warped boards.

So my question is simply, how do you bond the plasterboard to the celotex in a reliable and professional manner?

thanks

 

[cjard]

er.. Good luck with that. I've ordered a fair bit of seconds insulation over the time and less than 30% of it was regular enough to consider bonding to plasterboard..

Urethane glue, or maybe a reasonably liberal amount of expanding foam, suitably weighted