85mm drywall screws

[andyandy2]

Could anyone point me in the right direction of a supplier of 85mm or 90mm drywall screws for fixing insulated plasterboard to 25mm battens Thanks

 

[Jasonb]

Screwfix do a 100mm one, #82072, not cheap though

Jason

 

[andyandy2]

Sorry I forgot to mention that I have tried usual sources including screwfix and local builders merchants, 100mm are to long they would hit the brickwork (can i use any other screws, or do they cause problems when skimmed over)

 

[^woody^]

90mm of insulation and plasterboard with a fixing of only a nominal 20mm

 

[Bucks]

I know this reply might be a bit late for the OP (I hope it is)

But I thought I would add this reply in case anyone else is in a similar situation & comes across this thread, just like I did.

Best screws I have managed to find are the Timberdeck 4.0 x 85mm decking screws from Screwfix.
I have just purchased a sample box & they seem ideal not much thicker that a proper drywall screw, I just hope the coating on them will be OK with the plaster.