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Membrana Acústica Danosa M.A.D.4   
Danosa Acoustic Membrane

Data Sheet Certificates Safety Data Sheet
Membrana Acústica Danosa M.A.D.4 is a high density bitumen modified membrane specifically designed to behave as an anti resonant material.

It is an efficient substitute for lead sheets. Between porous absorbers materials works like a panel absorbers (most efficient at absorbing low frequencies).

 Technical Data

Thickness tolerance< 10%EN 823
Length and width tolerance< 5%EN 822
Nominal mass> 7,2%Kg/m2EN 1849-1
Mass tolerance10%EN 1849-1
Young's module 70kPaEN ISO 527-2
Poisson coefficient0,48--
Resistance to tearing (nail shank)180±50NEN 12310-1
Reaction to fireD s3 d0EuroclaseEN 13501-1
Sound reduction index improvement between plasterboard, ΔR5dBEN 140-16
Insulation improvement to 125 Hz (rigid elements)> 8dBEN 140-16
Insulation improvement to 125 Hz (like panel absorber)> 9,5dBEN 140-16

 Información Medioambiental

Environmental InformationDeclared ValueUnitsNorm
Content of recycled raw material15%-
Pre-consumer Recycled Content0%-
Post-consumer Recycled Content60%-
Manufacturing LocationFontanar, Guadalajara (España)--
Volatile organic compounds (VOCs)50µg/m3ISO 16000-6:2006.
Decree No. 2011-321 of 23 March 2011 the Ministry French Ecology, Sustainable Development, Transportation and Housing

 Standards and Certification

Acoustic certifications resulting from approved laboratory tests.

LaboratoryTest (EN 140-3) NoResult (EN 717-1)
AudiotecCAM19080072/AERRw = 58 dB
L.G.A.I98.012.316Rw= 49 dB
L.G.A.I.98.012.317Rw= 57 dB
L.G.A.I.98.012.318Rw= 68 dB
LABEINB130-134-H91Rw= 65 dB
LABEINB130-134-H94Rw= 66 dB
DANOSA95/MAD/008Rw= 39 dB


- It is used between rigid elements such as laminated plasterboard to improve insulation at low frequencies, both on vertical and horizontal walls.
- Used between spring elements (fibers, rock wool) to increase the overall insulation of the treatment, significantly improving low frequencies through the membrane effect within mass-spring-mass systems.
- It is used in industrial insulation as an anti-resonant material, providing acoustic mass to galvanized steel sheets.


Total thickness4mm
Nº rolls per pallet28ud
m2 per pallet168m2
Product Code610034-
  1. polyethylene film
  2. modified bitumen
  3. fibreglass (60 g/m2)

 Instruction for use

An installation of the Membrana Acústica Danosa M.A.D.4 is shown in the following pictures:

  1. Staple on 1st plate (wall)
  2. Place the second plate (wall)
  3. Staple on 1st plate (floating ceiling)
  4. Set the 2nd plate (floating ceiling)

 Indications and Important Recommendations

It is recommended that the Membrana Acústica Danosa M.A.D.4 is fixed by staples on plasterboard or wooden board, spikes between porous materials and adhesive to metallic surfaces.
- Check the product’s technical sheet on safety.
- For further information, please contact our technical staff.


The information contained in this document and any other advice provided, are given in good faith, based on DANOSA's current knowledge and experience when products are properly stored, handled and applied, in normal situations and in accordance with the recommendations of DANOSA. The information applies only to the application (s) and the product (s) to which reference is expressly made. In case of changes in the parameters of the application, or in case of a different application, consult the DANOSA Technical Service before using the DANOSA products. The information contained herein does not exonerate the responsibility of the building agents to test the products for the application and intended use, as well as their correct application in accordance with current legal regulations. The product images used in our communications are indicative and may differ slightly in color and aesthetic appearance in relation to the final product.
Orders are accepted in accordance with the terms of our current General Sales Conditions.
DANOSA reserves the right to modify, without prior notice, the data reflected in this documentation.

Website: www.danosa.com E-mail: info@danosa.com Telephone: +34 949 88 82 10