Isolmant D311

Isolmant D311

Isolmant D311

Isolmant D311

Resilient layer made of double-layer Isolmant polyethylene joined on the upper side to a high resistance aluminate embossed anti-tearing film. It provides excellent impact sound and airborne insulation for horizontal partitions.


Nominal thickness 22 mm.



Isolmant D311 is specific for the creation of “floating screeds” in accordance with UNI 11516:2013, in the presence of any type of floor, in particular on pilotis floors as, thanks to its thickness, it makes a significant contribution to the thermal insulation performance of the structure. This product is recommended for good sound and walking sound insulation as well as anti-tearing features.


It needs a finishing screed at least 7 cm thick.

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• Good sound insulation against impact noise and airborne noise.

• This product allows compliance with thermal transmittance limits for inter-floor slabs when properly combined with the floor and finishing screed.

• It can be used in both renovation and new construction.

• High mechanical and tear resistance.

• Low thermal conductivity.

• Inalterable in time.

• Unlimited duration.

• Contact with water does not affect performance or characteristics.

• Resistant to mould or insects.

• Easy installation.

Isolmant GreenPlanet

• Volatile Organic Compounds free (VOC A+).

• Environmentally friendly production.

• This product contributes to achieve credits for the environmental certification of a building according to LEED or ITACA standards.

• This product can be disposed of according to EWC n. 170604.


• This product complies with the requirements defined by Italian CAM Edilizia for acoustic and thermal insulation materials regarding the percentage of recycled material and the absence of hazardous substances.

Item Specifications

Resilient layer made of closed-cell, cross-linked polyethylene foam, laminated on the upper side with an aluminate, embossed film with an anti-tearfeature ( Isolmant D 311 type). To be installed with the aluminate-coated side facing upwards. Product with overlaps.

Nominal thickness 22 mm. Dynamic stiffness 37 MN/m3.

Item Specifications Copy item specification