Footfall sound
Impact sound refers to the sound created by walking in a room and is perceived within the room itself (also known as room sound). The higher the reduction in impact sound value (%), the better the room acoustics.
Impact sound
Impact sound refers to the perceived sound in other, usually lower, rooms. This is particularly important in multi-family houses to reduce the sound transmission to the lower floor. The higher the value of the impact sound insulation, the better the underlayment can reduce the transmission of impact sound.
Thermal insulation
Rooms located above a cellar or garage require underlays with a high thermal resistance to ensure thermal insulation. The greater the thermal resistance, the more pronounced the thermal insulation.
Underfloor heating
In rooms with underfloor heating, the thermal resistance of an underlay should be as low as possible (e.g., 0.01 m²K/W) to allow for good heat distribution. The lower the thermal resistance, the better the underlay is suited for use with underfloor heating.
Moisture protection
A floor must be protected from moisture whenever it is installed on a mineral substrate (e.g., screed), as this may contain some residual moisture. The higher the SD value, the better the underlay protects the floor from damage caused by rising moisture. TIP: Optimal protection by using the vapor barrier 1021 Aqua Protect and the sealing tape 1022 Alu Tape.
Dynamic load
Dynamic loads are generated, for example, by walking. The higher the value (measured in cycles), the longer the impact sound insulation withstands the loads without changing its properties.
Pressure load
To relieve the floor and its connection system, attention must be paid to high compressive strength. The higher the pressure load, the better the impact sound insulation protects the connection system and the longevity of a floor.
Compensation of unevenness
If the floor, for example, is uneven due to grains in the screed, small localized unevenness can be compensated for by using impact sound insulation. The higher the PC value, the better the ability to compensate for localized floor unevenness.
Fire behavior
Impact sound insulation can be marked with various fire protection certificates. The higher the fire protection certificate (e.g., Bfl - s1), the less flammable the material. This is particularly important for use in public areas such as events, trade fair construction, exhibition construction, and for use in theaters.
