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Underlay materials

Perfect Sub-Floor

Depending on the situation in the room, attention must be paid to the correct underlay material when laying the floorings. Different requirements with respect to thermal insulation, transmitted or reflected sound reduction require the correct insulating underlay to be chosen.

	PE foam 2 or 4 millimetre thick PE foam is the most inexpensive version. Average values for transmitted sound insulation and thermal insulation. The disadvantage is the low density and therefore pressure stability. Due to its small height, you can ideally use 2 millimetre foam for renovation work. PE foam is environmentally friendly, CFC-free and 100 percent recyclable. Available in different roll lengths Transmitted sound reduction: Around 16 decibels Unit weight: Approx. 20 kilograms per m³
		PE foil Especially when laying on new sub-floors (residual moisture) and if large temperature differences exist compared to the rooms below, PE foil must be used as a vapour barrier. It prevents damage to the laminate flooring caused by rising moisture. Rolls of material: 30 m², 0.12 millimetres thick Folded, self-service packaging: 10 m², 0,20 millimetres thick
	PE napped foam, blue PE napped foam combines the properties of lightweight foams with enormous pressure stability. It is therefore ideally suited for rooms with high usage (for example, commercial areas). These foams also support the Click laminate connections. Dimensions: 12.5 m² x 2 millimetres Transmitted sound reduction: Around 19 decibels Unit weight: 120 kilograms per m³ Pressure stability: Around 6.5 tonnes per m²
	PE parquet underlay, alu clad The ideal combination of insulation and moisture protection is the PE underlay with an aluminium clad. In addition the mat is overlapped and self-adhesive, so that it ensures absolutely reliable moisture protection but is very easy to lay. Dimensions: 12.5 m² x 2 millimetres Transmitted sound reduction: up to 16 decibels Unit weight: Around 20 kilograms per m³ Pressure stability: Around 0,8 tonnes per m²
	PS parquet underlay, alu clad The aluminium clad PS parquet underlay is ideal for laying on mineral sub-floors. It levels out unevenness and provides high thermal insulation. It is therefore not suitable for laying on hot water underfloor heating. The aluminium clad provides protection against residual moisture from the screed. Dimensions: 7 m² x 4 millimetres Unit weight: 40 kilograms per m³ Transmitted sound reduction: up to 20 decibels Very good pressure stability: Around 5 tonnes per m²
	Wooden fibre board The fibre board is made from wooden fibres and is especially suitable for thermal insulation, for example against colder rooms located under the floor (basement). It is therefore not suitable for laying on underfloor heating. Due to the high wood content it is imperative to lay PE foil moisture protection under the wooden board. Dimensions: 7 m² x 5.5 millimetres Reflected sound reduction: 4.7 sone Transmitted sound reduction: up to 19 decibels Very good pressure stability: Around 7 tonnes per m²
	Raw felt board This thin felt board can only be used on floors without any unevenness. An inexpensive and easy to lay solution. Its low thermal resistance enables it to be used on underfloor heating. Due to its high paper content, PE foil should be laid underneath it also to provide moisture protection. Dimensions: 20 m² mal 0.8 millimetre Unit weight: Etwa 400 grams per cubic metre Transmitted sound reduction: Around 12 decibels Thermal resistance: 0.05 m² K/W