Monarfloor Wall Cap 100 Timber

Acoustic isolation and energy insulating system for timber flanking walls within multi-rise developments.

Monarfloor Wall Cap 100 Timber isolates the timber stud from the separating floor joists, reducing the acoustic flanking sound transmission within the structure. Monarfloor Wall Cap 100 Timber also ensures the integrity of acoustic floating floor treatments for party floors. 

Wall Cap 100 System

Features & Benefits

  • Isolates the separating timber floor from the timber flanking wall.
  • Reduces the flanking sound transmission energy within the structure.
  • Improves air tightness at wall/floor junction (Approved Document L).
  • Superior acoustic isolation and damping performance.
  • Can be used as an isolator/innovative flanking detail with any acoustic flooring treatment.
  • Easily on or off site installed within timber wall constructions.
  • Significantly improves the acoustic isolation of the building when used in conjunction with other Monarfloor acoustic systems for party walls and floors.
  • Ensures the robustness of acoustic systems for party walls and party floors.
  • Demonstrates a significant cost saving and flexibility in the design and build of the building.
  • Surpasses performance requirements of Approved Document E of the Building Regulations.
  • Can be used to improve the acoustic performance and gain credits towards The Code for Sustainable Homes.
  • 3-4 cost-neutral credits for the Code for Sustainable Homes or Home Quality Mark HQM when used with other Monarfloor acoustic systems based on PCT test evidence (independent ceiling required for 4 credit floors). 
  • Product Range

    Product Code Description Dimension Weight (approx) Unit of Sale
    3007363 Monarfloor Wall Cap 100 Timber 3.8mm x 100mm x 8m 3.8 Kg Per Box
  • Product Data & Performance

    Performance Data:
    Composition: Bitumen composite membrane with acoustically rated fillers and a fire retardant finish
    Thickness: 3.8mm (nominal)
    Weight/Kit: 3.8kg
  • Installation Video

  • Installation Guide

    Typical timber flanking wall with timber ‘I’ joist party floor.

    Wall Cap 100 Typical timber flanking wall with timber ‘I’ joist party floor 

    1 Monarfloor® Wall Cap 100 Membrane   3 Monarfloor® Acoustic Tri-Batten System
    2 Monarfloor® Flanking Band   4 Monarfloor® Wall Cap 100 Membrane


    Installation at a glance

    • Roll out the Wall Cap membrane as a continual layer to both the head and sole plate. (This may be done in the manufacturing premises or on-site).
    • Centre the membrane and form a return.
    • Once centred and located staple the membrane to the timber frame with an industrial staple gun.
    • Trim any excess membrane using a sharp utility knife ensuring the integrity of the membrane is not damaged.
    • The panels can then be constructed on-site in the normal manner.

    For optimum acoustic isolation, Wall Cap 100 should be installed at every party wall and floor junction.

  • Downloads - Datasheets & Product Information Sheets

    On this page you can download our information and documentation in one place. Click on any of the acrobat icons below and the brochure will start to download.


    download pdf Monarfloor Acoustic Systems - Product Guide (ICO2833)
    download pdf Monarfloor Acoustic Systems - Product Guide - Republic of Ireland & Northern Ireland - (ICO3036)
    download pdf  Monarfloor Acoustic Systems - Mini Guide (ICO2833)
    download pdf Monarfloor Acoustic Systems - Price List
    download pdf Monarfloor 4 Credits Solutions (ICO1890)


    Product Information Sheets

    download pdf Wall Cap 100 Timber (ICO2031)


    CAD Library

    download pdf Wall Cap within a typical Timber Frame Flanking Wall & Party Floor (ICO1997)
  • Related Products

  • Contact Us - Technical & Specification Support - CPD's

    Icopal Monarfloor has a dedicated field service, with a network of technical advisers throughout the UK & Ireland, available to provide technical support and bespoke specifications to meet your exact project requirements.

    Our advisory service for specifiers and contractors is free of charge. Our technical advisers are available at any time during working hours to answer queries on any aspect of building acoustics design.

    Click here to find a local Icopal Technical Adviser

    Click here to request a bespoke specification for your project 

    Want to know everything about soundproofing?
    Our CPD seminars provide an insight into the world of acoustics and more.

    Click here to find out more about the CPD's available

    Alternatively our head office technical support team can be contacted on:

    0161 865 4444


Contact Us

To discuss your project in more detail please;

Contact your local area manager
Want to know everything about soundproofing?
Book a Monarfloor Acoustics CPD

Or contact us

Technical Support


0330 123 4585



Sales Enquiries & Orders


0843 224 7400


0843 224 7401


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Monarfloor Acoustic Flanking & Acoustic Floating Floor Systems