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Heat insulation

With resources needing to be conserved more than ever, heat insulation is an important criterion. A properly insulated floor feels warm, even when it is not heated.
Minimum underlay requirement: R ≥ 0,075 m2 K/W


Underfloor Heating

If the floor is to be laid on top of an underfloor heating system, the underlay must have the correct level of heat permeability. Heat transfer resistance should not exceed a value of 0.15 m² K/W in the entire structure (i.e. underlay and top layer).
High thermal conductivity ensures that your rooms are heated efficiently.
Maximum permitted EPLF value of the of the total floor: R ≤ 0,15 m2 K/W


Walking sound reduction

‘Walking sound’ refers to the noises which are audible within the room. The unpleasant click-clack effect can be greatly reduced by selecting the correct underlay. Depending on the material chosen.



Impact sound insulation

‘Impact sound’ describes the noises that are heard in rooms below or adjacent. Depending on the material compound used in the underlay, impact sound can be reduced by up to 22 dB.
Minimum EPLF requirement: IS ≥ 14 dB



Loading capacity

Adequate pressure stability of the underlay is very important, particularly when laying click laminate floors.
Minimum EPLF requirement: CS ≥ 10 kPa


Suitable for uneven floor

In renovation projects involving older buildings, the rooms will often turn out to have uneven floors. These irregularities can be levelled out with the right add2 parquet underlay.
Minimum EPLF requirement: PC ≥ 0.5 mm



Moisture protection

In the case of subfloors containing mineral compounds, flooring manufacturers stipulate the installation of a vapour barrier (PE foil). When using our add2 products with their integrated vapour barrier, there is no need for an additional PE foil.
Minimum EPLF requirement: SD ≥ 75 m