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Monarfloor Tri-Deck System

Monarfloor Tri-Batten System consists of a 5 mm layer of foam rubber, bonded to an 8 mm layer of LRAC foam Type III bonded to a 22 mm V313 P5 moisture resistant chipboard.

Features and benefits:

  • Designed to support floor loadings defined in BS 6399-1: 1996.
  • The system incorporates recycled Low Resonance Acoustic Chip foam, providing excellent impact improvement characteristics and superior stability.
  • All LRAC foam used in Monarfloor systems is flame retardant.
  • The Tri-Deck System is designed to reduce sound transmission through timber floors where the existing timber floor will be removed.
  • When installed as part of a complete sound reduction system, Tri-Battens enable a timber floor to meet the sound transmission regulations of Part E.


  • DnT,w (Part H): 55 dB.
  • DnT,w + Ctr (Approved Document E): 46 dB.
  • L,nt,W: 56 dB.
  • Board weight: 30.50 kg.
  • Weight per m²: 21.18 kg.

General information


2400 x 600 x 35 mm

Uniclass 2015

Pr_25_57_06_54 Mineral wool resilient layer sound insulationPrimary


K11/275 Acoustic separating floor system

K11/295 Floating floor system

Specification data - Mineral wool resilient layer sound insulation Enhanced data

Product Reference

Monarfloor Tri-Deck System



Monarfloor adhesive

Monarfloor flanking band

Isolation strip

Standard product features


2400 x 600 x 35 mm.

Third party certifications
  • Certificate Number: 99/3600
Similar products from Monarfloor Acoustic Systems, trading name of Icopal Ltd