Isocheck Re-Mat Base 3, 6 & 10

Under Screed Impact Improvement Systems
The isocheck Re-Mat Base 3, 6 & 10 under screed impact improvement systems are designed to reduce impact sound transmission through all types of structural concrete floors where a screed floor finish is also required. If installed correctly provides sufficient impact absorption to place it amongst the top performing systems available.


Isocheck Re-Mat Base 3, 6 & 10 comprises 3mm, 6mm and 10mm (for high load) reconstituted bonded rubber layer that has been designed to be placed within a masonry structural floor directly below the screed. Isocheck Re-Mat Base 3, 6 & 10 have been tested to BS EN 29052-1:1992 and satisfy the dynamic stiffness requirement with a figure of 10MN/m3.

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To be used on concrete beam and block, hollow core, in-situ and all other types of concrete structural subfloors, for conversions, refurbishments or new build. This isolates the screed from the structural sub floor. By ensuring that all the joints are taped, bridging will be eliminated which is the single greatest cause of failure of any system of this type.


(on the construction illustrated)

Construction complies with the latest version of Approved Doc E of the building regulations. Under separate UKAS laboratory tests it was also found to provide an impact improvement of 18dB ΔLw when placed below a 65mm sand/cement screed.

Re-Mat Base 3
Re-Mat Base 6
Re-Mat Base 10
1.00m x 20m x 3mm thick rolls
1.25m x 10m x 6mm thick rolls
1.25m x 6m x 10mm thick rolls
Composition:  Bonded rubber fibres
Density: 730kg/3 ±5%
Colour: Black

Compression test:
(DIN EN ISO 3386-2)

CC25₂₂ = 539kPa
CC40₂₂ = 1803kPa
CC50₂₂ = 4660kPa

Compression at 10% pressure:
(DIN 53421)

(E-Module) 2.9MPa

Thermal conductivity (DIN 52612):


Fire Classification (DIN 4102):


Isocheck Re-Mat Base 3, 6 or 10 under screed impact improvement system, supplied by Isomass Ltd. Units 10 & 11, Avenue Business Park, Off Brockley Road, Elsworth, Cambridgeshire, CB23 4EY and installed in accordance with manufacturer’s instructions / recommendations.

The floor surface should be swept free of any loose debris that may damage or bridge the system.
Butt joint and seal all roll edges of isocheck Re-Mat Base 3, 6 or 10. At perimeters butt Re-Mat Base 3, 6 or 10 onto a right angle flanking edge strip which should be turned up all vertical surfaces to allow a minimum 50mm to protrude above the intended FFL of the screed.
Perimeter butt joints should be sealed with a min. 100mm wide duct tape.
Services that penetrate the screed should be isolated by wrapping with Re-Mat Base 3, 6 or 10 which again would be taped.
Installation instructions is available to be used in conjunction with this information and/or information contained in the datasheet when laying these floor systems.

  • min 80kg/m2 – 65mm sand cement screed or 40mm liquid proprietary screed.
  • Optional plastic sheeting – to aid screed pouring and maintain joints in isocheck Re-Mat Base 3, 6 or 10.
  • Isocheck Re-Mat Base 3, 6 or 10.
  • ≥ 300kg/m2 minimum structural beam and block floor with optional levelling screed.
  • min. 75mm void formed by metal frame suspended ceiling system plus ≥10kg/m2 fire-rated board ceiling.
Isocheck Re-Mat

Isocheck Re-Mat Base 3, 6 or 10 product data sheet


Isomass have a large number of products available as BIM Components on the Bimstore website. These are digital files which contains information about a real-world physical building component or material that is used in the construction process.


The BIM file for Isocheck ReMat Base 3, 6 and 10 can either be downloaded directly from this page by clicking on the download button, or can be downloaded from the bimstore (link on the right), where other isomass products are also available and can be downloaded as a collection.

Note: all BIM Components are in the Revit (.rvt) file format.

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