Party Wall DPC

Party Wall DPC Party Wall DPC Party Wall DPC
Fire product

ARC Party Wall DPC

  • Up to 4 hours fire integrity
  • Vertical, horizontal and staggered options
  • Integral DPC
  • Specified in terraced, semi-detached, apartments and major projects
  • Meets requirements of Robust Detail Part E and Approved Document B
  • Maximum cavity width available: 300mm
  • Easily installed with a friction fit
  • Third-party certificated by IFC


ARC Party Wall DPC enables the closing of an external cavity at either party wall or party floor junctions where building regulations require the use of mineral wool closer for acoustic insulation purposes.

Manufactured from non-combustible rockfibre mineral wool insulation and sleeved in colour coded polythene for on-site identification and protection. The ARC Party Wall DPC includes an integral DPC, satisfying any requirement for a DPC to be installed between the barrier and external brickwork.

Key stats

Length supplied 1.2m
Third-party certification IFC certificate number: IFCC 1728
Insulation Non-combustible rockfibre mineral wool
Thermal conductivity 0.037W/mK
Fire rating Up to 4 hours
Insulation performance Up to 2 hours
Test standard EN1366-4
Construction type Masonry
Orientation Vertical or horizontal
Integral DPC Yes

Frequently asked questions about this product

Can this product be used horizontally?

A horizontal version of ARC Party Wall DPC is available, which includes additional width of DPC which can be lapped back to the inner leaf, negating the requirement to install a separate cavity tray above.

Can this product be used with an SFS internal leaf?

ARC Party Wall DPC is fire rated and certified for use in a traditional masonry construction.

Industry awards and accreditations for this product

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