5 mm · 15 m² a roll
1 / 3Flooring underlay · For laminate and wood floors
5mm Sonicstep Premium Gold Underlay · 5 mm thick · covers 15 m² per roll
Excellent · 4.5 out of 5 · 143 reviews on TrustpilotPay withKlarna.
Courier delivery · £6.99 per order
Out of stock. Message us on WhatsApp for the next delivery date, or choose the other thickness above.
- Price match promise
- Sent from Birmingham
- UK-based help

Meet 5mm Sonicstep Premium Gold
5 mm premium underlay for extra warmth and quiet. Covers 15 m².
The 5mm Sonicstep Premium Gold Laminate and Wood Flooring Underlay is a quality underlay designed to enhance the performance and comfort of your laminate and engineered wood flooring. Each pack covers 15 square metres, making it ideal for both residential and commercial installations.
- Goes under laminate and engineered wood floors
- Cushions every step and cuts footfall noise
- Each roll covers 15 m²
Specification
The detail
- Underlay
- 5mm Sonicstep Premium Gold
- Thickness
- 5 mm
- Coverage
- 15 m² per roll
- Use with
- Laminate and engineered wood flooring
- Price
- £34.99 per roll£2.33 per m²
- Delivery
- Courier delivery · £6.99 per order
About 5mm Sonicstep Premium Gold Full product description
The 5mm Sonicstep Premium Gold Laminate and Wood Flooring Underlay is a quality underlay designed to enhance the performance and comfort of your laminate and engineered wood flooring. Each pack covers 15 square metres, making it ideal for both residential and commercial installations.
This high-performance underlay provides excellent acoustic insulation, reducing footfall noise and creating a quieter, more comfortable living environment. The 5mm thickness offers superior cushioning underfoot while maintaining the stability required for long-lasting flooring installations.
Two thicknesses
Which underlay?

3mm Sonicstep Premium Silver
3 mm underlay with a built-in vapour barrier. Covers 15 m².
- Thickness
- 3 mm
- Covers
- 15 m²
- Price
- £24.99
You're viewing5mm Sonicstep Premium Gold
5 mm premium underlay for extra warmth and quiet. Covers 15 m².
- Thickness
- 5 mm
- Covers
- 15 m²
- Price
- Sold out
Fitting
Four steps to a quieter floor
- 01Prepare the subfloor
It must be clean, flat and dry. On concrete, lay a damp-proof membrane first unless your underlay has one built in.
- 02Roll it out
Roll the underlay out wall to wall and trim it to size with a sharp knife or scissors.
- 03Butt and tape
Lay each strip tight against the last without overlapping, and tape the joins so nothing moves.
- 04Lay your floor
Fit the floor straight on top, following its fitting guide. Roll out the next strip as you go.
Reviews
Excellent
Rated 4.5 out of 5, based on 143 reviews on Trustpilot
Super service“The customer service was second to none – they have been fantastic and gone completely over and above.”
Wayne M.
Great product“The ordering experience was simple and straightforward, and the products arrived well packaged.”
David L.
Questions
Good to know
Which underlay, how much and how to lay it – we're happy to help.
WhatsAppCall 0121 387 8717Email usHow many rolls do I need?
Each roll covers 15 m². Work out the floor area (length × width), divide it by 15 and round up. The calculator above works it out for you.
Which thickness should I choose?
Both go under laminate and engineered wood. The thicker underlay gives more cushioning underfoot. Check your floor's fitting guide too, as some floors say which underlay to use.
Do I need underlay with every floor?
No. Floors with built-in underlay don't need another layer – the floor's product page says when it has one – and glue-down LVT is bonded straight to the subfloor. This underlay is for laminate and wood floors laid floating (not glued or nailed down) that don't have underlay built in.
Can I lay it on concrete?
Yes, on a clean, flat and dry concrete floor. Lay a damp-proof membrane first unless your underlay has one built in.
How is it delivered?
By courier, usually within 1–3 working days. Delivery is £6.99 per order. Delivery details.
5mm Sonicstep Premium Gold underlay