Acoustic Liner Carpet Underlay - Stage 2

Thermal and Acoustic Modern Underlay
1.8 sq/m (20 sq/ft) Acoustic Liner with Application Roller
1.8 sq/m (20 sq/ft) Acoustic Liner with Application Roller


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Due to the impact of COVID-19 (Corona Virus), parts of our supply chain have been interrupted. We will be shipping packs out Acoustic Liner on 15th of April. 

Car Builders Acoustic Liner is a multi-layer open and closed cell foam with a peel and stick backing. It offers a high level of acoustic and thermal insulation superior to that of traditional jute underlay.

Our premium underlay is todays answer to predated jute and cotton mill scrap traditionally used under carpets.

Our Acoustic Liner will not rot, attract mold, is easy to cut and does not require the application of glue.

Our Acoustic Liner can also be used throughout your vehicle as a general purpose thermo acoustic barrier.


  • Light Weight
  • Easy installation - just peel off the release liner and adhere to surface.
  • Cuts with scissor and knife
  • Reduces heat transfer
  • Does not rot or deteriorate


  • Under carpets
  • Roof skins
  • Inside cavities
  • 1/4 panels
  • Doors
  • Firewalls


Sheet dimensions
Length: 1000mm
Width: 900mm
Thickness: 12mm
Total Weight: 1kg
Weight/Sqm: 0.55kg


Material temperature resistance:  

Cold Resistance: - 40°C
Heat Resistance: short term + 135°C, long term +110°C


Adhesive temperature resistance: 

Cold Resistance: -40°C
Heat Resistance: short term + 150°C, long term +135°C
Flame Retardant: Grade B2
Heat Conductivity Factor: <= 0.034 W/(M.K)    at 0°C
Customer Reviews

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HZ One Tonner

By: on 18 November 2019
Great stuff to use. Very noticeable difference in the cab. I plan to use car builders in my dad's car and other future builds. Can't recommend this stuff enough