instalay q50 low grab
Instalay Application Guide

Instalay Q50 Low-Grab

Non-Permanent Peel and Stick Underlay

Density (Airborne) - 2kg/m² Roll Weight - 20kg Thickness - 5mm Roll Size - 10m² Impact Noise Reduction - 26dB Material - Recycled Crumb Rubber

£90.75 (ex VAT) / £108.90 (inc VAT)

Self-Adhesive and Perfect for Soundproofing and Underfloor Heating under Carpet tiles, Engineered Wood, Laminate installations and Luxury Vinyl Tiles.

The revolutionary 5mm Q50 low-grab combines a patented peel and stick system with recycled crumb rubber delivering a superb acoustic performance. The revolutionary underlay hs changed the way floors are installed, removing the need for any glues or nails and has significantly reduces the mess and labour times linked with flooring installations.

Ideal for:

  • Carpet tiles
  • Engineered wood (click joint)
  • Laminate (click joint)
  • Luxury Vinyl tiles

It delivers excellent acoustic insulation, outstanding comfort and stability, high durability, with anti-microbial and anti-allergy properties plus its low tog rating makes it ideal for underfloor heating systems. The Q50 low-grab has the benefit of being supported internally by recycled vulcanised rubber crumb granules; when the granules are compressed the granules provide an excellent cushioning performance, once the pressure is released the granules immediately return to their original form.


It’s recommended that on all concrete sub-floor applications a damp-proof membrane is applied prior to installation, because some floors are susceptible to water damage (wood, laminate or vinyl). The joints should overlap by a minimum of 150mm and should be taped and sealed with a waterproof adhesive tape. To expel the water vapour above the finished floor the damp-proof membrane should be allowed to extend up the perimeter of the wall by 50mm, the membrane can be later trimmed level with the surface of the finished floor.
Click here to view the Instalay Application guide

Additional Information




1000 x 100cm




Wood, Laminate

Roll Area


Impact Noise



Crumb Rubber

Heat Insulation





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?

This product reduces impact noise by 26dB.

The table below demonstrates the level of decibels (dB) experienced from common everyday noises:

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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