Can You Put Acoustic Underlay Under Carpet? Yes — Here's How

Written by our acoustic insulation specialist — 15+ years experience supplying soundproofing to UK homeowners, developers and contractors. About our experts.

From our acoustic insulation specialist.

Yes — acoustic underlay works excellently under carpet and is one of the easiest ways to add meaningful noise reduction to a carpeted floor.

Which Products Work Under Carpet

Our 6mm recycled rubber underlay performs excellently under carpet — 74dB impact reduction plus cushioned comfort. Key: use closed-structure rubber, not open-cell foam.

Installation Steps

1. Lay acoustic underlay loose over clean, dry subfloor
2. Tape all joins with acoustic tape
3. Turn up at perimeters by 10mm
4. Lay carpet over the top

Do I Need Separate Carpet Underlay Too?

Usually not — our rubber underlay provides both acoustic and comfort performance. For maximum softness in bedrooms, a thin felt layer can be added over the top without significantly affecting performance.