Karma Visco 17 and Karma Visco 21 are shallow acoustic overlay boards designed to damp vibration and attenuate impact and airborne sound passing through floors with minimum loss of room height. They comprise substrate layers of moisture resistant MDF combined with either fibreboard (17) or cement particleboard (21) separated by sound damping strips. A resilient layer of acoustic felt is adhered to the underside.




  • Shallow construction – only 17 or 21mm
  • Acoustic felt contours over minor irregularities
  • BBA certificate 92/2826 applies
  • Can meet Part E with resilient bar ceiling
  • Can also be used on concrete floors

Karma Visco 17 & 21

  • Price Guide - £20.50+VAT (17mm)

    Price Guide - £26.25+VAT (21mm)


    Board dimensions: 1175 x 575 x 17 / 21mm
    Laid area per board: 0.675 m2
    Board weight: 9.1 kg/m2 – 18.0 kg/m

  • Quietstone Supplies products are normally available on a 2-3 working day turnaround once the order is processed, However please ensure to check with one of our technical team as turnaround times can vary.


    Please ensure that when ordering, the delivery location is accessible by large and articulated vehicles as some of our products will be delivered in this way, If you require additional information to be added to ensure the delivery is succesful, please ensure to tell one of our technical team on placing the order as Quietstone Supplies will not be held responsible for failed delivery attempts and additional fees for redelivery may be applied


    Due to insurance guidelines, delivery personnel are unable to enter private residences. Delivery will be as far as possible to the kerbside of the delivery address. The recipient of the products is responsible for any additional lifting once the delivery has been made. Please bear in mind that Insulation products can be bulky and / or heavy.

Quietstone (UK) Ltd

Nab Quarry, 

Pott Shrigley, 



SK10 5SD

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