I suggest overboard it with 3mm ply first to level it all out, then underlay. Answer from Usual-Foundation8454 on reddit.com
🌐
Luxury Flooring
luxuryflooring.co.uk › home › what is the best underlay for laminate & wood flooring? | luxury flooring
What is the Best Underlay for Laminate & Wood Flooring? | Luxury Flooring
February 19, 2025 - If you’re wondering what’s the best underlay for laminate or wood flooring, Fibreboard is a brilliant choice. It helps smooth uneven floors, reduces noise and acts as an excellent thermal insulator.
🌐
Screwfix Community Forum
community.screwfix.com › forums › screwfix community forum › builders' talk
Best Underlay For Uneven floor | Screwfix Community Forum
September 3, 2018 - How uneven,if concrete,themn a thin layer of leveling compound might be a better solution. As to underlay,'Natura Sonic Gold' is among the best,using it here, do tape the joints with alumium tape. https://www.luxuryflooringandfurnis...ate-and-wood-flooring-underlay-5mm-thick.html
🌐
Floors Direct
floorsdirectltd.co.uk › accessories › underlay › fibreboard laminate underlay 5.5mm
Quality Fibreboard Underlay: The Solution to uneven Floors
Fibreboard Laminate Underlay 5.5mm
This 5.5 mm Fibreboard Underlay is ideal for flattening uneven floors with imperfections up to 2mm in height or depth.   Whether you have a problem with buldging under floor boards or cracked and scratched concrete with rough surfaces this underlay helps a great deal.   To get the best out of your Wood or laminate flooring you need to ensure it is laid on top of uneven / flat sub-floor. To acheive this Fibreboard is used as your most effective solution. Use with: Wood & Laminate Underlay Suitability: Domestic (not for industrial floors) Pack Size: 10m2 Thickness: 5.5mm Impact Sound Reducti
Price   £27.00
🌐
Reddit
reddit.com › r/diyuk › laying laminate over these floor boards…what’s the best underlay material to use?
r/DIYUK on Reddit: Laying laminate over these floor boards…what’s the best underlay material to use?
March 14, 2022 - I have done the same thing at my house a few weeks ago on a very similar floor. I used · 3mm underlay as anything thicker will allow too much flex for laminate (as it's too light) and can cause the boards to unclip over time and will leave ...
🌐
DIYnot
diynot.com › home › forums › how to... › floors, stairs and lofts
Best Underlay for Laminate on Suspended Timber Floor? | DIYnot Forums
December 19, 2023 - I'm sure I remember seeing something about if the floor has a DPM to get underlay without one? thanks · Click to expand... Duralay do the Timbermate XL for concrete floors and Multi Tex for wood floors although you are unlikely to have an issue ...
🌐
Eco Cork Foam
ecfunderlayment.com › home › blog › dealing with uneven subfloors? trust eco cork foam as your go-to flooring underlayment
Dealing With Uneven Subfloors? Trust ECF Underlayment
December 26, 2018 - Anyone planning on installing new floors can rely on Eco Cork Foam to serve as their best underlayment for both hardwood and laminate flooring applications. ECF consists of a perfected polyethylene and granulated cork blend to deliver the best ...
🌐
Best4Flooring
best4flooring.co.uk › blog › choosing-the-right-underlay-for-laminate-flooring
Choosing the Right Underlay for Laminate Flooring
November 6, 2025 - You’ll need it if you’re laying flooring over concrete, in basements, or anywhere prone to damp. Underlays like Royale Sonic Gold have this built in — just make sure to seal the joins with Barrier ProX Tape. ... Definitely — especially ...
🌐
Flooringunderlayment
flooringunderlayment.com › best-underlay-for-uneven-sub-floor
Best Underlay for Uneven Sub Floor - Flooring Underlayment
August 6, 2020 - We’ve found that QuietWalk is the best underlayment for uneven subfloors. Since QuietWalk is made from dense recycled fibers, it does an excellent job keeping your flooring safe from minor imperfections.
Find elsewhere
🌐
MyBuilder
mybuilder.com › question overview › question
Laminate on uneven floor - MyBuilder
March 1, 2024 - It is probably best, to try and flattern it out. Laminate has a habit of cracking along the joints, if the floor is uneven. It might take a few years though. Fibre board undelay isn't any good on screed (concrete), it will be ok on the timber part of your floor. Maybe try a slightly thinner moisture barrier underlay ...
🌐
Expert Reviews
expertreviews.co.uk › home › home & garden › best laminate underlay 2024: foam and fibreboard for under your floor
Best laminate underlay 2024: Foam and fibreboard for under your floor | Expert Reviews
January 3, 2024 - Made from high-density sponge rubber with a built-in vapour barrier, Duralay’s Timbermate Excel underlay is ideal. It will reduce sound by up to 23dB – or around 30% – so little ones can thunder around as much as they please.
🌐
Tapi Carpets
tapi.co.uk › the-ideas-hub › care-guides › best-underlay-for-laminate-flooring
What is the Best Underlay for Laminate Flooring? | Tapi Carpets
For typical laminate flooring, choose an all-purpose underlay that offers basic sound reduction and comfort. If the subfloor you’re working with is uneven, it’s worth considering a good quality underlay that is able to help smooth out minor irregularities to provide a sturdy base for the ...
🌐
floorMuffler
floormuffler.com › choosing-the-best-underlayment-for-laminate-flooring
Choosing The Best Underlayment For Laminate Flooring - floorMuffler
February 14, 2024 - A concrete subfloor provides a strong surface for installing underlayment and laminate. Its advantages include durability and affordability. Concrete is also not susceptible to wood-eating insects or pests. The cons of working with this material for subflooring include: Moisture: Concrete can absorb moisture in a humid or damp environment and wreak havoc on laminate flooring. Unevenness: Bumps or uneven areas of the concrete can complicate the installation process and lead to damaged flooring planks.
🌐
BuildDirect
builddirect.com › blogs › expert-advice-on-flooring › choosing-the-best-laminate-flooring-underlay
Choosing the Best Laminate Flooring Underlay – BuildDirect
Learn how to choose the right laminate flooring underlay for your home. Explore types, uses, and tips for durability, comfort, and moisture protection.
🌐
Mersey Flooring
merseyflooring.co.uk › flooring suppliers › news › best underlay for laminate flooring: a complete guide
Best Underlay for Laminate Flooring: A Complete Guide – Mersey Flooring
Cork underlay: Cork is an excellent insulator and has natural antimicrobial properties, which makes it a great choice for homes that are prone to dampness. Fibreboard underlay: This is a great choice for those who need to level out unevenness ...
🌐
Classen
showroom.classen.pl › en › poradniki › podklad-pod-panele-na-nierowna-podloge-jaki-bedzie-najlepszy
Underlay for uneven floors – which is the best?
In addition, water-resistant laminate flooring is easy to install and very difficult to distinguish from wooden boards. The underlay for the flooring in this case is also important, as it should be resistant to mechanical damage and moisture. Its thickness is also important, as up to 4 millimetres of unevenness in the substrate can be levelled out with the right underlay.
🌐
Bob Vila
bobvila.com › reviews › tools & materials › the best laminate underlayment for flooring
The Best Laminate Underlayments for Home Flooring
April 28, 2024 - Get the Roberts Serenity laminate underlayment at Amazon or The Home Depot. ... Extra thick (3mm) to provide great sound absorption from foot traffic and improve small inconsistencies in flooring · Designed with grid lines, tape, and adhesive ...
🌐
Floorlot LLC
floorlot.com › blogs › help › choosing-the-best-underlayment-for-laminate-flooring
Choosing The Best Underlayment For Laminate Flooring – Floorlot LLC
November 12, 2024 - To prepare a concrete subfloor for laminate installation, test for moisture and fix any uneven or damaged areas. Select an underlayment with a moisture barrier that also provides a soft, comfortable walking surface. When preparing your subfloor for a laminate flooring project, there are several key factors to keep in mind, regardless of the subfloor material:
🌐
Underlay 4u
underlay4u.co.uk › blog › 2017 › 11 › 22 › what-is-the-best-underlay-for-laminate-flooring
What is the best underlay for laminate flooring or engineered wood floor
February 23, 2023 - For engineered or solid wood flooring, you’ll need a product that is 5mm or less. Any thicker than 5mm, then your new floor is likely to become unstable – that’s the big difference between carpet and laminate underlays.
🌐
Lowe's
lowes.com › home › diy projects & ideas › buying guides › flooring
The Complete Guide to Floor Underlayment
July 14, 2025 - While it is durable, it may break down faster than other materials. High-density foam is the best choice for laminate flooring. Foam underlayment allows for the expansion and contraction of laminate floors, which helps prevent damage.
🌐
Interfloor
interfloor.com › do-you-need-underlay-for-laminate-flooring
Laminate Underlay | Underlay for Laminate Flooring | Interfloor
November 6, 2020 - Laminate is a floating floor, meaning it lays loosely over your subfloor. The laminate panels need to be evenly distributed and fixed securely in place, so they don’t move or warp. A lot of subfloors are slightly uneven or bumpy, which can affect the quality of the laminate installation. Installing an underlay ...