Robust Detail E-FC-4

Robust Detail E-FC-4 is an acoustic insulation system used for soundproofing and noise reduction applications in precast plank floor constructions. It consists of 6mm Isorubber Base resilient acoustic insulation below a sand & cement or flow screed with Isoedge 6/260 perimeter separation strip and a Metal Frame or Isosonic ceiling treatment.

System Summary

Robust Detail E-FC-4 is an acoustic solution for precast plank floors. This system exceeds the requirements of Approved Document Part E and when registered with Robust Details Ltd removes the requirement for on-site sound testing.

Benefits

  • Exceeds Building Regulation requirements.
  • No need for sound testing if registered with Robust Details Ltd.
  • System uses Isorubber Base to reduce noise transfer, this is a tough, resilient acoustic mat that can withstand the rigours of the screeding process.
  • Purpose made Isoedge strip is used around the screed perimeter to eliminate flanking sound transfer.
  • No long term / short term deformation of acoustic layer.
  • Suitable for use with Under Floor Heating.
  • Tried and tested solution which has been widely used since 2004.

Components & Specifications

Acoustic Performance

As a Robust Detail the E-FC-4 system must consistently achieve a site test mean average:

Airborne Sound ≥ 50db (Dntw + Ctr)

Impact Sound ≤ 57db(Lntw)

This exceeds the Building Regulation (Approved Document Part E) requirements by 5dB in both cases.

Isorubber Base

Roll Size  6mm x 1m x 10m
Roll Weight  37kg (14 Rolls per pallet)
Density  635kg/m³
Isorubber Base is a 6mm thick acoustic insulation and vibration-reducing mat that can be laid beneath a screed or timber floating floor to reduce impact sound and vibration transmission to assist in sound proofing applications. A very durable product with a density of approximately 635Kg/m3, Isorubber Base does not suffer from any dete...

IsoEdge

Products Include:
Isoedge 6/75
Isoedge 6/260
Isoedge Ceiling Strip
Isoedge Stop End
Isoedge Door Stop
The Isoedge range of perimeter isolation and acoustic formwork are very important components of our acoustic systems that help to reduce flanking sound transmission. They can also be used to provide an expansion joint for timber floating floors. Installation is simple with features such as adhesive backing strip, break-out joints, and...

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About System

The ever-popular E-FC-4 system was the first ever proprietary Robust Detail for concrete floors and has been widely used since its approval in 2004. It provides high performance and excellent design flexibility, being compatible with all masonry external flanking wall types. This makes it the natural choice for under screed Approved Document Part E compliance.

The E-FC-4 system consists of 6mm Isorubber Base fitted below a minimum 65mm sand & cement or minimum 40mm proprietary screed with Isoedge 6/260 separating the screed from the wall. The structural floor must be a minimum 150mm precast plank with a minimum mass of 300Kg/m2 per unit area. The joints of the Isorubber Base are lapped by 50mm and taped using Isorubber Jointing Tape.

This system can be used with all masonry external flanking wall constructions, including aircrete blocks (450 – 800Kg/m3, 1350 – 1600Kg/m3 & 1850 – 2300Kg/m3).

A metal frame ceiling with a minimum void of 100mm or an Isosonic Ceiling is also required. Both ceiling details are under drawn with a layer of gypsum based board (minimum 8Kg/m2).

The extensive site testing carried out for Robust Detail classification and the subsequent monitoring tests show that the E-FC-4 system can achieve 3 Code for Sustainable Homes Credits, subject to pre-completion testing.

As part of the E-FC-4 registration Thermal Economics provide site training to Site Managers and Screeders by experienced industry professionals who will instruct on installation procedures and answer any questions regarding your specific project.

The E-FC-4 system can also be, and is frequently, used in non Robust Detail specifications, subject to pre-completion testing.

Aircrete Blocks

Aircrete Blocks

Compatible with all types of Screed

Compatible with all types of Screed

Compatible with UFH

Compatible with UFH

Easy Installation

Easy Installation

Global Warming Potential less than 5

Global Warming Potential less than 5

Made from Recycled Waste Rubber

Made from Recycled Waste Rubber

Ozone Depletion Potential Zero

Ozone Depletion Potential Zero

Robust Detail Compliant Construction

Robust Detail Compliant Construction

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Installation steps