• Regupol 3912 Acoustic Underlay
  • REgupol 3912 Acoustic Underlay Thickness
  • Regupol 3912 Acoustic Underlay Roll

Regupol 3912 Acoustic Underlay for Refurbishment

Now known as REGUPOL sonus 3912

Regupol 3912 (REGUPOL sonus 3912) is an acoustic underlayment which is tough durable and designed to attenuate impact sound at source.

Regupol 3912 (REGUPOL sonus 3912) can be bonded to all types of base floors and is supplied in 6mm thick rolls.

Being manufactured from PUR foam, Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment’s principle use is for the refurbishment market and is ideal for use beneath carpets hardwood floors battens T&G chipboard etc. It can also be used for new build but before making recommendations please contact CMS Danskin Acoustics Technical Support.

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  • Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlaymentbeen independently tested by a UKAS accredited laboratory to show compliance with the new building regulations in accordance with Approved Document E 2003.
  • Standard thickness 6mm thick although other thicknesses are available upon request.
  • Offers long term performance without collapse or “bottoming” out under highpoint loads.
  • Resistant to ageing and deformation.
  • Quick and easy to install. Simply bond to the subfloor beneath the final floor finish.
  • Reduces construction heights.
  • Primarily used for refurbishments although can be used for new build also.
  • High quality and exact material thickness guaranteed.
  • Suitable for use with under floor heating.
  • Very comfortable under foot.


Example 1

18mm T&G chipboard laid over Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment adhered to 18mm T&G chipboard, directly fixed to timber joists, 8” x 2”, with 75mm mineral wood between joists and two layers of 12.5mm thick plasterboard fixed to resilient bar.

Acoustic Performance of Regupol® 3912 (REGUPOL sonus 3912) Acoustic Underlayment - Example 1
Airbourne sound Insulation Rw (C;Ctr)
54dB (measured in accordance with BS EN ISO 140-3:1995
Impact Sound Insulation (Lntw)
43dB (measured in accordance with BS EN ISO 140-6:1998

Example 2

8mm T&G chipboard laid over 19mm plasterboard plank, over Regupol® 3912 (REGUPOL sonus 3912) Acoustic Underlayment adhered to 18mm T&G chipboard, directly fixed to timber joists, 8” x 2” and two layers of 12.5mm thick plasterboard fixed to the joists.

Acoustic Performance of Regupol® 3912 (REGUPOL sonus 3912) Acoustic Underlayment - Example 2
Airbourne sound Insulation Rw (C;Ctr)
49dB (measured in accordance with BS EN ISO 140-3:1995
Impact Sound Insulation (Lntw)
55dB (measured in accordance with BS EN ISO 140-6:1998

Example 3 Acoustic Batten System

Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment is a very versatile product within the refurbishment market and can also be used with batten floor systems, an example of which is detailed across.

18mm T&G chipboard fixed to timber battens laid on Regupol 3912 (REGUPOL sonus 3912) adhered to 18mm T&G chipboard.

  • Cut to suit a variety of different batten widths, giving greater flexibility when selecting the batten size.
  • Only 6mm thick, therefore minimises floor heights, which can often be the disadvantage in using standard “off the shelf” products.
  • Fix to the top or bottom of the battens.


Product Specification

Roll Width
Roll Lengths (standard)
Non standard lengths available on request

Regupol 3912 (REGUPOL sonus 3912) conforms to the following specifications:

Tensile strength
(DIN 53571)
Elongation at break
(DIN 53571)
Temperature resistance
370 kg/m3
0.4 N/mm2
Approx. 45%
-40 to +110°
Thermal resistance
(DIN 52612)
Impact sound insulation ΔLw
Approx. 0.12 W/mk
1/λ = 0.049 K/W
23dB (measured in accordance with BS EN 140-8:1998)


Subfloor preparation is essential for the correct installation of Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment. Subfloors must be sound, smooth, dry and free from any contaminants which could affect adhesion.

Please ensure each roll of Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment is completely unrolled, turned over and left in the area to which it is to be applied for a minimum of 6 hours or ideally overnight prior to cutting and installing.

Laying Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment

Bond Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment to the base floor. The Regupol 3912 Acoustic Underlayment  should be bonded to the subfloor using one of our  recommended adhesives – please contact CMS Danskin for a list.
Please ensure the adhesive guidelines are followed at all times.

Lay the Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment  into the adhesive and press from the centre outwards to exclude air and ensure overall contact with the adhesive.

Roll the Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment  with a 68kg flooring roller, from end to end and side to side to ensure overall contact.

Please leave a minimum gap of 3mm around the entire perimeter to allow for expansion and contraction. Do not butt the Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment  against the skirting boards and/or carpet grippers.

Use a craft knife and straight edge for cutting to size and please ensure that all edges are butt jointed.

After 30 minutes, when the floor has been completely covered, roll once again to ensure contact is maintained.

Please do not apply loads or move furniture on the Regupol 3912 (REGUPOL sonus 3912) Acoustic Underlayment until the adhesive has fully set. Please refer to the adhesive manufacturer’s installation guidelines for curing times.


CMS Bond 100 High Performance Acoustic Sealant for Use with Regupol® 3912 (REGUPOL sonus 3912) Acoustic Underlayment

CMS Bond 100 is a solvent free low VOC high performance water based acrylic dispersion with very good bond strength. It is suitable for plasticized vinyl floor coverings (including PVC tiles) together with high density foam backed carpets.


CMS Bond 100 is distributed in the UK by CMS Danskin Acoustics. The adhesive manufacturer will guarantee the performance and quality of products against manufacturing defects provided they are used in accordance with our relevant Technical Data Sheets at the time of installation and the appropriate sub floor preparation has been undertaken in accordance with the relevant British Standards.

Floor covering manufacturers are constantly introducing new backings and improving their current products. Certain backings may have unique characteristics which may influence the choice of adhesive used. Whilst every effort has been made to ensure the information is correct at the time of publication it is the responsibility of the user to ensure that the product is suitable for the particular installation.
If there is any doubt as to the use of our adhesives the installer should contact CMS Danskin Acoustics for advice or carry out their own tests to ensure compatibility.

Important steps before you lay CMS Bond 100 – Surface Preparation

Suitable sub-flooring substrates include concrete, flooring grade hardboard, plywood, chipboard, sand/cement screed, proprietary good quality self-smoothing underlayments. Asphalt and surface membranes should be treated with at least a 3mm coating of the latter before applying the adhesive.

Site conditions should comply with the latest British Standards editions: BS 8102 (Code of Practice for protection against moisture from the ground), BS 8203 (Code of Practice for installation of resilient floor coverings), BS 5325 (Code of Practice for installation of textile floor coverings), BS 8204 part 1 (Code of Practice for installation of self levelling screeding compounds), and supplementary specifications.

Surfaces must be level, firm and clean, free of loose material, mould, oil, grease, organic growth and surface moisture (under 75% RH).

Uneven, dusty or friable surfaces should be treated with the appropriate universal primer and screed.*

It is essential that suitable damp proof membranes be in place to prevent rising damp.*

Under floor heating should be turned off for at least 48 hours prior to and after application.

Particular attention must be paid to the floor covering manufacturer’s instructions. i.e. any pre storage conditions prior to fitting.

*Please contact CMS Danskin for further information.


CMS Bond 100 is a ready to use versatile product and should not be diluted or adulterated in any way.


Use a notched trowel of dimensions 1.5mm x 5mm or as CFA guidelines.

Heavy textured floor coverings may require a larger towel.

Apply adhesive evenly to the substrate and depending on the substrates lay the floor covering while still wet. It is best to allow the freshly applied adhesive to stand for 15-45 minutes depending on the ambient conditions, to build tack before embedding the floor covering.

Press firmly into place and rill using a 60/70Kg roller or glider depending on material used. Roll again approximately 1 hour after application.

Wait at least 24 hours before welding vinyl seams.

Removal of adhesive from tools

Clean tools with water if adhesive is still wet or use white spirits if it has dried.

Product Specification
ColourOff White
ConsistencyTrowelable Mastic
Open Time15 minutes plus depending on site conditions: Temp, humid & surfaces to be treated
Specific Gravity1.2
Shelf Life12 months if stored between 5-30°C in a dry area, in original unopened containers.
Protect from frost.
Product Technical Information
CuringHigh humidity, a low temperature and poor ventilation will retard the drying speed
Coverage3m2/kg depending on the porosity of the substrate and thickness of the adhesive film.

Adhesive and DPM

REGUPOL adhesive 46-101 Acoustic Adhesive


REGUPOL adhesive 46-101 represents the very latest development in Hybrid Polymer technology and has been formulated to give the highest levels of performance in terms of bond strength, versatility across many combinations of materials, improved acoustic performance in acoustic installations, resistance to stresses, fast curing speed and ease and cleanliness of use.

Download Our Technical Data Sheet

REGUPOL adhesive 43-105 Acrylic Adhesive for Vinyl and Linoleum


REGUPOL adhesive 43-105 is a solvent free acrylic emulsion-based adhesive, for bonding many sound insulation materials to common sub-floors and many floor finishes to the insulation. This easy to spread adhesive, with a long open time, provides early tack and minimum slip, quickly building to a strong permanent bond. It is non-staining and has excellent resistance to plasticiser migration.

Download Our Technical Data Sheet

More Regupol Products

Regupol® 7210C

Now known as REGUPOL sonus core 5

Regupol 7210c Acoustic Under Screed Material
Regupol® 7210C (REGUPOL sonus core 5) Acoustic Resilient Layer is a cost-effective rubber bound product manufactured from recycled materials.

Regupol 4515 Multi

Now known as REGUPOL sonus multi

Regupol 4515 Multi Acoustic Underlay
Regupol 4515 Multi (REGUPOL sonus multi) 3-4.5mm acoustic underlay for concrete floors with light-coloured finishes.

Regupol 4515 Eco

Now known as REGUPOL sonus eco

Regupol 4515 Eco Resilient Underlay
Regupol 4515 Eco (REGUPOL sonus eco) 3-4.5mm acoustic underlay for concrete floors.

Regupol High-Impact Mat

Regupol High Impact Mat
Regupol High-Impact Mat 4-12mm non-slip final floor finish for heavy footfall areas.

Regupol® 6010BA

Now known as REGUPOL sonus curve 17

Regupol 6010BA Acoustic Underscreed Material
Regupol 6010BA (REGUPOL sonus curve 17) 10mm underscreed with 50KN/m2 load-bearing capacity.

Regupol 6010SH

Now known as REGUPOL sonus core 10-S and REGUPOL sonus core 15-S

Regupol 6010SH Under Screed Sound Insulation
Regupol 6010SH (REGUPOL sonus core 10-S and REGUPOL sonus core 15-S) 10-15mm underscreed with 100KN/m2 load-bearing capacity.

Regupol E48

Now known as REGUPOL sonus curve 8

Regupol E48 Robust Detail Underscreed
Regupol E48 (REGUPOL sonus curve 8) 8mm underscreed. Robust Detail for Beam & Block floor E-FC-6.

Regupol Quietlay

Now known as REGUPOL sonus quietlay

Regupol Quietlay Robust Detail E-FC-15
Regupol Quietlay (REGUPOL sonus quietlay) 5mm underscreed. Robust Detail for pre-cast concrete plank E-FC-15.

Acoustic Lagging for Technical Applications