NBS Source
List your products
Monarfloor Bridgestop System

Acoustic isolation system designed to isolate masonry party walls on raft foundations or on a continuous concrete slab.

Features and benefits:

  • The system is used to isolate the two leaves of a party wall, reducing the acoustic bridge.
  • The product can be used as an isolator for steel where a party or flanking wall is to be built.
  • Exceeds the requirements of Approved Document E of the Building Regulations.
  • Specified within Robust Details Appendix A (August 2008).
  • Bridgestop can be used as part of a number of Robust Detail walls without affecting the credits already available.
  • Four cost-neutral credits for the code for Sustainable Homes (based on PCT test evidence).

General information
Uniclass 2015
Pr_25_57_06_71 Resilient layer insulationPrimary

F30/155 Partial fill cavity insulation

Specification data - Resilient layer insulation
Product Reference

Monarfloor Bridgestop System

Monarfloor flanking band


Not required

Standard product features

The Bridgestop system kit comprises:

  • 1 x roll of Bridgestop high performance acoustic membrane – 3 mm thick.
  • 2 x rolls of reconstituted polyetherpolyurethane Bridgestop quilt – 10 mm thick.
  • 40 Bridgestop ties.


– Membrane:

500 x 8000 x 3 mm.

– Quilt:

300 x 8000 x 10 mm.