Noise Between Floors — Complete UK Solution Guide

Noise between floors is one of the most disruptive problems in UK homes and flats. Whether it is footsteps from above, bass from a neighbour's music, or the thud of a child running, floor noise affects quality of life significantly. This guide covers every solution available — from simple acoustic underlay to full Part E compliance systems.

Why Floors Transmit Noise

Sound travels between floors in two ways. Impact noise — footsteps, dropped objects — travels through the physical structure of the floor itself. Airborne noise — voices, music — travels through the air before striking the floor and transmitting to the space below. Most floor noise complaints involve both types.

Solutions by Floor Type

Concrete Separating Floor

Concrete floors are excellent at blocking airborne noise but transmit impact noise effectively. The solution: a resilient acoustic layer between the concrete and the floor finish. Our 6mm rubber underlay (74dB) is ideal — lay it over the concrete, add a floating floor above, and impact noise is dramatically reduced.

Timber Joist Floor

Timber joist floors transmit both impact and airborne noise. A comprehensive solution requires treatment from above (acoustic underlay + floating floor) and below (resilient bars + plasterboard + mineral wool in joist void). Our 12mm acoustic flooring system addresses both noise types when used as part of a complete assembly.

Screeded Floor

Screed provides an excellent substrate for acoustic treatment. Our 6mm rubber underlay performs extremely well on screed — the rigid, flat surface allows the full ΔLw 74dB rating to be achieved in practice.

Part E Requirements

Building Regulations Approved Document E sets mandatory performance standards for separating floors. New builds: DnT,w ≥ 45dB / L'nT,w ≤ 62dB. Conversions: DnT,w ≥ 43dB / L'nT,w ≤ 64dB. These cannot be achieved with underlay alone — a complete system is required. See our Part E guide.

Product Recommendations

FAQ

Can I hear footsteps through a concrete floor?

Yes — concrete transmits impact vibration efficiently. Acoustic underlay directly above the concrete, with a floating floor finish, is the most effective solution.

What is the difference between ΔLw and L'nT,w?

ΔLw is a product improvement rating — higher is better. L'nT,w is the actual in-situ floor performance — lower is better. Part E is assessed against L'nT,w, not ΔLw.

Need advice for your specific situation? Contact our acoustic experts for a free recommendation. Browse our full acoustic insulation range.