Underlay for Quick-Step^®: why - when - which?

The purpose of an underlay floor is to level minor evenness in the sub-floor and provide acoustic (sound) and thermal insulation. To avoid problems caused by rising damp, you must always lay a plastic foil. If you choose a Quick-Step^® underlay, the correct moisture barrier is already attached to the underlay.

Acoustic insulation

A distinction is made between transit sound and reflection sound.

Transit sound: the sound you hear when someone walks across a floor in the room above you. The Quick-Step^® Transitsound underlay has been specially designed to minimise this noise. Recommended for multi-storey buildings.

Reflection sound: the sound you hear when you walk on the floor. The Quick-Step^® Unisound underlay has been specially designed to minimise (natural) reflection sound. Ideal for living rooms or office spaces where the tapping of high heels can be disturbing.

The thermal insulation of an underlay is important in the case of underfloor heating. More information can be found in the chapter "Can you use Quick-Step^® with underfloor heating?”.