Acoustic Overlay

Acoustic Floor Panels

Karma Overlay 28

Airborne Rating - N/A Impact Rating - N/A Panel Thickness - 28mm Size - 1.44m²
Actual Area (sq m) 1.44
Total Price £24.99

£24.99 (ex VAT) / £29.99 (inc VAT)

Perfect for new build apartments, hotels, student accommodation and houses with timber joists.

Karma overlay 28 is a high performance acoustic floor panel with an exceptionally high sound reduction performance to height ratio. The combination of P5 chipboard and cross linked polyolefin foam make the overlay 28 a complete sound proofing solution, tackling both impact and airborne noise.
The 18dB rating may not appear to be as good as some of the other Karma range products, but the overlay 28 will provide a substantial improvement in terms of impact and airborne noise reduction.
• Excellent impact and airborne noise reduction
• Minimal height increase
• Can be used with any floor finish
• Cost-effective solution
• Non-load bearing partitions and can be built off the finished floor surface
• Can be used on existing subfloors or concrete/screed floors
• Eliminates the requirement for a damp proof membrane
• Versatile – can be finished with all types of floor finish
• When tested in conjunction with an existing sub-floor the overlay 28 has been deemed fit to satisfy requirements of Approved Document E
• The T&G profile makes the installation process extremely easy
• The P5 chipboard has an exceptional fire rating

Product Specification

Additional Information

Dimensions 240 x 60 cm




Edge Detail

Square Edge


18mm P5 chipboard bonded to a 10mm cross linked polyolefin foam


2400 x 600 x 28mm

Airborne Noise Reduction (dB)


Impact Noise Reduction (dB)



Delivery Charges


Standard (3 Days) Next Day
£0 – £199 ex VAT £15 £40
£200+ ex VAT FREE £25

Soundproofing, Laminate, Real Wood & Carpet Tiles

Standard (3 Days)
£0 – £199 ex VAT £30
£200+ ex VAT FREE

Important Information

    • Standard delivery is 3-5 working days
    • Order with multiple product types will have compound delivery costs, please call for for more information.
    • Due to the bulky nature of certain products and insurance / liability issues, the couriers will only deliver to kerbside. (they cannot be expected to carry goods up to your flat for example)
    • The cost for soundproofing are higher as these must be delivered in pallets which is a higher cost.
    • There is a 40% restocking fee on all soundproofing products.

Underlay-Delivery-Info-RHS (1)Ordering

We aim to dispatch all orders between 3 to 5 working days. As your order is now with our courier network it is subject to adverse weather conditions and road networks, so please be patient.

We deliver from Monday to Friday between 9am and 6pm. We assume that access is available for vehicles for all deliveries and for HGV’S for larger orders. Deliveries are door-to-door and the driver can not be expected to take them inside the property. We request that someone is available to sign for the goods upon delivery.

It is imperative that you the customer are available to sign for the goods upon delivery. Please ensure that your goods are inspected, prior to signature for damage. Once the goods have been signed for in “Good Condition” the carrier and Flooring Warehouse Direct will reject any claim for damages or compensation. Any damage or short delivery should be reported to us within 24 hours of receipt of delivery.

We highly recommend that when booking fitters, more time is allowed for delivery as orders are subject to such things as credit checks, stock availability and delivery conditions which can mean the order may be delayed. If you have any questions, please contact us before making an order.


If you decide to return any good we recommend you do so within 14 days of receipt. Sadly, we have to exclude any products that have been altered in any way (cut-to-size, made-to-measure etc.)

If you do send the goods back for any reason, please let us know so we can send you our warehouse address. Upon receipt of the goods appropriate credit will be issued.

Is this right for me?

The list below details common noises and their average decibel (dB) level:

Decible (Unit)
Noise Type
Low threshold of hearing - the softest sound you can hear
Leaves rustling in the breeze / Quiet whisper
Average whisper
20 - 50
Quiet conversation
40 - 45
Hotel lobby conversation
50 - 65
Loud(ish) conversation
65 - 70
Moderate traffic / Hair dryer
65 - 90
75 - 80
Factory (medium) / Washing machine
Heavy traffic / Petrol lawn mower / Busy city
90 - 100
Thunder / Walkman / Traktor
Boom box on high volume / Chain saw / Leaf blower
Shouting / Symphony concert
Rock concert
Ambulance siren
Threshold of pain / Firework display / Gunshot
Airplane takeoff from short distance away
140 - 190
Space rocket takeoff

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