The ARC Fire and Acoustic Party Wall DPC is manufactured from lengths of rockfibre mineral wool bonded to a polyethylene DPC. 


  • Up to four hours fire integrity
  • Part E Robust Detail compliant
  • Vertical and horizontal applications
  • Available to fit cavity widths from 50 to 300mm

It is designed to enable the closing of an external cavity both vertically a the junction with a party wall, and horizontally at separating floor levels, where building regulations require the use of a mineral wool closer for acoustic insulation purposes.