What Is the Best Underlayment for Laminate Flooring? (Expert Guide 2025)

Choosing the best underlayment for laminate flooring can feel confusing at first, so here is the simple answer most UK homeowners want right away: if you have a concrete subfloor, the safest option is an underlay with a built-in moisture barrier. If your subfloor is timber, a good foam or fibreboard underlay usually works best. And if noise, cold floors or comfort are your main concerns, an acoustic or thermal underlay is the more intelligent choice.

That quick overview covers the basics, but the right decision depends on a few key details inside your home. Things like subfloor condition, sound transfer between rooms, how warm the space feels underfoot and whether you have underfloor heating all influence which underlayment will perform well long-term. If you’re still comparing styles for your project, you can explore our laminate flooring collection while you’re choosing the right underlay. Many people only notice how crucial these points are after their laminate starts sounding hollow, feels uneven, or shows early signs of moisture problems.

This guide keeps everything clear and practical. You will learn how each type of underlay performs in real UK homes, how to compare options without getting lost in technical terms and how to match the product to your room so your laminate feels steady, warm and quiet for years. The goal is simple. By the time you finish this page, you should feel confident choosing the underlayment that genuinely fits your home, not just the one that looks good on a label.

Suppose you are planning a new laminate installation or upgrading an old one. In that case, this is where you can get a clear, straightforward explanation of what actually works in everyday UK conditions.

What Underlayment Actually Does for Laminate Flooring (And Why It Matters)

Laminate flooring underlay is one of those things you rarely see but always feel. It sits quietly under the boards, yet it has a significant effect on how your floor sounds, how warm it feels and how well it holds up over time. Many UK homeowners only realise its value after a hollow sound appears, a cold draught creeps through the room or moisture from a concrete subfloor begins to cause trouble. This section breaks down the four jobs underlayment handles in a simple, practical way so you can recognise what your home actually needs.

• Sound absorption

Laminate can be noisier than people expect, especially in flats or semi-detached homes where footsteps travel between rooms. A good underlay softens that impact and lowers the sharp, hollow sound that laminate sometimes makes. Acoustic and cork options perform best here because they absorb vibration rather than letting it bounce straight through the boards. If noise between floors has been a problem in your home, a sound-focused underlay can make your laminate feel noticeably more solid and quiet from day one.

• Moisture control

If you have a concrete subfloor, this is the part that truly matters. Concrete holds moisture longer than people think, and that moisture can slowly move up into the laminate. Underlays with a built-in DPM or foil-backed moisture barrier block moisture and protect the edges and joints of your flooring. Without this layer, the laminate can warp or swell long after the installation looks perfect. For ground-floor rooms or older UK homes with fluctuating humidity, moisture control is usually the deal-breaker between a trouble-free floor and an expensive repair.

• Comfort

Even the best laminate will feel slightly hard without the proper underlayment. A quality foam or fibreboard layer adds a bit of cushioning, making walking softer and more comfortable, especially in bedrooms or living areas where you spend more time barefoot. It also smooths minor subfloor imperfections, helping the boards lock together more securely. If your room feels cold underfoot or you want a gentler surface for everyday use, comfort-based underlay makes a clear, noticeable difference.

• Lifespan improvement

This part is often overlooked, but the underlay directly affects how long the laminate lasts. When the floor rests on a stable, cushioned and moisture-protected base, the locking system is under less stress, and the boards stay level for longer. A firmer underlay, like fibreboard, can also support heavy furniture and reduce pressure on the joints. Think of it as the foundation of a building. When the base is right, everything on top performs better. A well-chosen underlayment can extend the lifespan of a laminate by keeping the floor quieter, steadier and less prone to movement.

Key Factors You Must Consider Before Choosing an Underlay

Choosing the best underlayment for laminate flooring gets easier once you know which parts of your home actually matter. Most UK homeowners think the choice is all about price or thickness, but the real difference comes from the conditions under the floor: your subfloor type, moisture levels, noise levels, warmth, and whether you have underfloor heating. If you get these parts right from the start, your laminate will feel quieter, warmer and far more stable for years.

In this section, we explore the key checks you should make before buying anything. Think of it as the part that stops the common mistakes. I’ve worked with homeowners from Leeds to Croydon, and the same problems keep popping up when the underlay is chosen too quickly. Hollow sounds. Cold floors. Moisture is creeping into the joints. Most of those issues are avoidable with upfront clarity.

Here’s a simple way to think about it. Underlay isn’t just padding. It’s the layer that protects your laminate from whatever is happening underneath. The more closely you match the product to your home’s needs, the fewer surprises you’ll encounter later.

Before we look at each factor in detail, here’s a quick checklist you can skim. It helps you recognise what matters in your home and what doesn’t.

Quick homeowner checklist:

• Is your subfloor concrete or timber?
  
• Does the room feel cold underfoot?
  
• Do you hear footsteps on the floor?
  
• Any signs of damp or past moisture issues?
  
• Do you use underfloor heating?
  
• Is the floor slightly uneven?
• Do you want lower VOC options for better air quality?

Subfloor Type (Concrete vs Timber)

Your subfloor does half the job for you. Concrete and timber behave very differently under laminate, and the wrong underlay can create noise or moisture problems faster than you’d expect.

If you’re on concrete, you’ll usually need an underlay with a moisture barrier. Concrete in UK homes holds damp for far longer than people think, especially in older buildings or ground-floor rooms. A foil-backed or DPM underlay blocks that moisture and protects the laminate joints.

If your subfloor is timber, you’re dealing with movement rather than moisture. Foam or fibreboard underlay adds stability, reduces small dips and helps the floor feel firmer underfoot. People often tell me their laminate felt “too clicky” before switching to a firmer underlay. That upgrade usually fixes it within a day.

To help you spot your subfloor quickly:

• Concrete feels hard and cold, usually grey and smooth
  
• Timber subfloors look like boards or sheets of plywood.
  
• Suspended floors often come with a slight bounce.
  

Matching the underlay to this base is the simplest way to avoid long-term damage.

Moisture Levels and the Need for a Vapour Barrier (DPM)

Moisture is the silent problem under the laminate. You rarely see it early on, but it can lift boards or cause swelling around the edges months after installation. If you live in a ground-floor flat, an older terrace or a home with a history of damp patches, you should assume moisture is present.

A DPM underlay creates a protective layer that stops moisture from rising through concrete. It’s essential for kitchens, hallways and basements with concrete slabs. If you skip this step, no brand of laminate will save you from issues later.

For timber floors, moisture isn’t usually the main issue unless the house has poor ventilation or recent leaks. A breathable underlay is better in those cases.

Sound Reduction Ratings (dB Class)

If you live in a flat, a semi-detached home or a house with busy upstairs rooms, sound reduction should be high on your list. Laminate naturally creates more impact noise than carpet, so underlay plays a big role in how quiet a room feels. Look for dB ratings on the packaging. Higher numbers usually mean better acoustic performance. Cork and acoustic foam underlays are the top choices for reducing footstep noise. In places like Manchester city flats or London terraces, where neighbours are close, upgrading to an acoustic underlay makes a noticeable difference. If your room echoes or feels hollow, this is the factor that will fix it.

TOG Rating and Thermal Performance

TOG affects how warm the floor feels underfoot. Bedrooms, lofts and north-facing rooms often benefit from an underlay with a slightly higher TOG. It adds gentle insulation and removes that cold shock you sometimes get with laminate on winter mornings.

If a room feels consistently cold or you’re working on a ground-floor concrete slab, thermal underlay is worth the upgrade. On the other hand, if you have underfloor heating, look for a low-TOG product so the heat passes through efficiently. We’ll cover that part next.

Underfloor Heating Compatibility

Not all underlays work with underfloor heating. If you choose one that traps heat, the system becomes less efficient and can cause expansion issues in the laminate.

You’ll want an underlay with low TOG, good breathability and a firm structure so the boards stay stable. Homes across the south of England, especially new builds, often use underfloor heating in living spaces. Choosing the wrong underlay in those homes creates warm spots or slow heating times. Look for a product clearly marked for underfloor heating and always check the maximum TOG recommended by your flooring brand.

Compression Strength and Durability

Every day, pressure from furniture or heavy footfall affects how the laminate behaves over time. A quality underlay supports the locking system and reduces strain on the joints, especially in busy rooms like living areas and hallways.

Fibreboard underlay offers the best support for slightly uneven timber floors. For concrete, foam with high compression strength works well. This is one of those areas where paying a little more upfront protects the whole floor long-term. If you’ve ever seen laminate start to dip near a sofa or dining table, weak underlay is often the reason.

Eco-Friendly and Low-VOC Underlay Options

If you prefer lower-VOC materials or want a more eco-conscious choice, cork and recycled-fibre underlays are your best options. They offer good sound absorption and comfort without strong chemical smells.

Many families in the UK, especially those with children or pets, prefer these materials because they avoid the sharper scent that some foam underlays can emit during installation. Look for products labelled low-VOC or made from recycled content.

Types of Laminate Underlay (Pros, Cons and Best Uses)

Once you know what your home needs, choosing the right laminate flooring underlay becomes much simpler. If you want to compare products quickly, you can browse the different types of underlay available and match them to the options explained below.  Each type has its own strengths, limitations, and ideal scenarios, and understanding these differences helps you avoid the common mistakes many UK homeowners make. Below, we break down the main options in a straightforward way so you can match the product to your room, subfloor and comfort expectations without overthinking it.

Foam Underlay

Foam underlay is the go-to choice for many DIY homeowners because it’s light, affordable and easy to install. If your subfloor is timber and fairly even, foam delivers good comfort underfoot and enough support for everyday rooms.

Pros:

• Soft feel and great for bedrooms or living spaces
  
• Simple to cut and fit
  
• Works well over clean, stable timber floors
  

Cons:

• Not suitable for concrete without a moisture barrier
  
• Limited sound reduction compared to cork
  
• Can lose shape in heavy traffic areas
  

Best for: Timber subfloors, guest rooms, rented homes and light daily use.

Foam and Foil Underlay (DPM Layer)

This is the standard solution for concrete subfloors across the UK. The foil backing or built-in DPM protects your laminate flooring from rising moisture, which is one of the biggest threats in ground-floor rooms. It still delivers cushioning but adds the safety layer that concrete requires.

Pros:

• Strong moisture protection
  
• Helps stabilise the laminate over concrete
  
• Still comfortable underfoot
  

Cons:

• Slightly more expensive than plain foam
  
• Not the best choice for principal sound reduction
  

Best for: Kitchens, hallways, basements and any room sitting on concrete. A must-have if your home has even a mild damp history.

Fibreboard Underlay (Strength and Levelling)

Fibreboard underlay is perfect when you need structure rather than softness. It’s ideal for timber floors that have small dips or minor uneven spots. Each board adds firmness and reduces bounce, which helps your laminate flooring lock together more securely.

Pros:

• Excellent levelling ability
  
• Strong support for high-traffic rooms
  
• Reduces movement and hollow sounds
  

Cons:

• Not moisture-resistant
  
• Takes longer to install
  
• Feels firmer and less cushioned
  

Best for: Older UK homes with slightly uneven timber floors, dining rooms or hallways with heavy furniture and busy footfall.

Cork Underlay (Acoustic Performance)

If noise is your main issue, cork is the standout option. It naturally absorbs vibration, making it ideal for flats, upstairs bedrooms and shared walls in semi-detached homes. The sound improvement is often noticeable within the first few steps.

Pros:

• Best acoustic performance
  
• Eco-friendly, low-VOC material
  
• Long-lasting and supportive
  

Cons:

• Higher cost
  
• Not ideal for rooms with potential moisture
  

Best for: Flats in busy cities, upstairs spaces, music rooms or any UK home where footstep noise has caused problems in the past.

Thermal Underlay for Cold Rooms

Thermal underlay is designed for warmth, making it a strong choice for north-facing rooms, loft conversions, and ground floors that always feel chilly. It adds insulation and prevents heat loss through the subfloor.

Pros:

• Warmer feel underfoot
  
• Great for bedrooms and colder rooms
  
• Adds comfort while improving energy efficiency
  

Cons:

• Higher TOG may not suit underfloor heating
  
• Not moisture-resistant unless paired with foil
  

Best for: Homes with cold laminate floors, older properties and winter-prone areas across the UK.

Budget vs Premium Underlay Options

Budget underlay is tempting, especially for quick rentals or small projects, but it often lacks proper moisture control or long-term support. It works fine when the subfloor is perfect, and the room gets light use. Premium underlay, on the other hand, adds measurable improvements in sound reduction, comfort and lifespan.

To help you compare:

Budget underlay is ideal when:

• You’re working on a secondary room
  
• Your subfloor is already level and dry.
  
• Long-term noise and comfort aren’t priorities.
  

Premium underlay is worth it when:

• You want quieter floors
  
• You’re installing laminate in a high-traffic area.
  
• You have concrete and need a built-in DPM
  
• You want more substantial support to protect the laminate joints.
  

Here’s a simple table to show the difference.

Underlay Comparison Table

Type	Comfort	Sound Reduction	Moisture Protection	Durability	Cost Level
Budget Foam	Good	Low	Very low	Medium	Low
Foam + DPM	Medium	Medium	Very high	High	Medium
Fibreboard	Medium	Medium	Low	Very high	Medium
Cork	Medium	Very high	Low	High	High
Thermal	High	Medium	Medium	Medium	Medium to High

Best Underlayment Recommendations for Real Scenarios

Choosing underlayment becomes much clearer once you match it to a real situation in your home. Most UK homeowners run into the same issues again and again: concrete that holds moisture, timber floors that creak, upstairs rooms that echo, cold bedrooms, or underfloor heating that doesn’t work well with the wrong TOG rating. Below, you’ll find the straightforward recommendations that usually solve these problems without guesswork. Everything here is based on how the underlay performs in everyday UK homes, not just what the packaging claims.

Best Underlayment for Laminate Flooring on Concrete

Concrete is the most demanding subfloor because it pulls moisture up from the ground, even when it appears dry. This is why the safest and most reliable option is foam underlay with a built-in DPM or foil backing. You can compare different moisture barrier underlay options to find the level of DPM protection that best fits your concrete subfloor. The moisture barrier is what protects the laminate joints long-term.

Why it works:

• Blocks moisture rising from the concrete slab
  
• Helps laminate sit level and stable
  
• Adds a comfortable amount of cushioning
  

Recommended for: Ground-floor rooms, kitchens, hallways, basements and older UK homes with any history of damp patches.

Avoid: Plain foam or fibreboard underlay on concrete. Both leave the laminate exposed to moisture and can cause swelling.

Best Underlay for Laminate Flooring Over Wooden Subfloors

Timber floors don’t need a moisture barrier, but they do need support. Timber moves, bounces, and sometimes dips in places, especially in older homes. The best match is foam or fibreboard underlay, depending on what the floor feels like underfoot.

Foam is best when:

• The timber is level and stable
  
• You want a softer feel underfoot.
  
• You’re working in bedrooms or quiet spaces.
  

Fibreboard is best when:

• The subfloor has small, uneven spots
  
• You want more substantial support for heavy furniture.
  
• You need a firmer, more stable laminate surface.
  

Homes in areas like Sheffield, Bristol and Manchester with older timber floors generally benefit from fibreboard because it firms up the room immediately.

Best Soundproof Underlay for Laminate Flooring

If noise is your biggest concern, go straight to cork underlay or a specialised acoustic foam. These options absorb vibration better than any standard foam layer, and they noticeably reduce footstep sounds.

Why these perform best:

• Cork has natural sound-absorbing properties
  
• Acoustic foam dampens impact noise.
  
• Both reduce the hollow echo of the laminate, which can create
  

Great for: Flats in busy UK cities, upstairs bedrooms, offices and any home where neighbours have complained about noise.

If your floor sounds like a drum when you walk on it, this is the upgrade that fixes it.

Best Underlayment Flooring for Warmth

Cold rooms need a bit of help, especially north-facing spaces, ground floors and older properties. The best choice is thermal underlay, which improves insulation and makes the laminate feel noticeably warmer.

What it improves:

• Heat retention
  
• Underfoot comfort
  
• Energy efficiency in colder rooms
  

Top situations:
Loft conversions, bedrooms, living rooms and draughty ground-floor areas.

Just make sure you’re not using this over underfloor heating. Higher TOG stops heat flow.

Best Underlay for Underfloor Heating

Underfloor heating works best with an underlay that lets heat pass through easily. Look for low-TOG underlays specifically labelled for underfloor heating. These are usually thin, firm and breathable.

What matters most:

• A TOG low enough for your heating system
  
• A structure that won’t trap heat
  
• Good stability to support the laminate joints
  

This combination prevents hot spots and helps the room warm up evenly. Many new builds in the south of England use this system, and choosing the wrong underlay often leads to slow heating times and flooring movement.

What Thickness Underlay Is Best for Laminate?

Thickness is often misunderstood. A thicker underlay is not always better. The goal is to support the laminate, not make it bouncy.

Recommended thickness for most UK homes:

• 2–3 mm for laminate on underfloor heating
  
• 3–5 mm for standard foam or foil-backed underlay
  
• 5–7 mm for fibreboard when levelling is needed
  

Too thick an underlay can cause:

• Movement in the locking system
  
• Soft spots under furniture
  
• Hollow or unstable flooring
  

If you want better comfort, choose a better material rather than extra thickness.

Best Underlay for Laminate Flooring Based on Common Problems

Most homeowners don’t search for laminate flooring underlay by material. They search because something feels wrong: the floor sounds hollow, the room feels cold, the noise is annoying, or the subfloor isn’t perfect. This section gives you the quickest way to find the best underlay for laminate flooring based on the exact problem you’re dealing with. It skips the technical noise and focuses on real, everyday issues in UK homes.

If Your Floor Sounds Hollow

A hollow or echoey laminate floor usually means the underlay isn’t absorbing impact properly. This is one of the most common complaints after fitting laminate flooring on both timber and concrete subfloors.

Best fix: Cork underlay or acoustic foam underlay
Both are widely considered the best soundproof underlay for laminate flooring because they absorb vibration and reduce that empty, tapping sound under your steps.

Why it works:

• Helps laminate flooring feel more solid
  
• Reduces sound transfer between rooms
  
• Improves the acoustic feel instantly
  

Great for: Flats, upstairs landings and semi-detached homes where footsteps travel easily.

If Your Room Is Cold

Laminate is warmer than tiles, but it still loses heat quickly without the proper support. If you step onto the floor and feel a sharp coldness, your underlay isn’t providing enough insulation.

Best fix: A thermal underlay designed to boost warmth under laminate flooring.

What it improves:

• Heat retention
  
• Underfoot comfort
  
• Energy use in cold rooms
  

Best for: Loft conversions, north-facing bedrooms and ground-floor concrete areas where laminate often feels cold even after installation.

If You Want Maximum Soundproofing

If noise is the main issue, don’t gamble with basic foam. You need an option explicitly designed to reduce impact and airborne sound.

Best fix:
Cork underlay for natural acoustic performance
or
Premium acoustic foam for substantial impact reduction

These materials consistently show better results than standard laminate underlay when soundproofing is the priority.

Ideal for: Flats in London or Manchester, shared households, home offices and anyone who wants quieter laminate flooring without changing the boards.

If Your Subfloor Is Slightly Uneven

Uneven timber floors are prevalent across the UK, especially in older homes. Even a few dips can prevent laminate boards from locking properly, leading to movement and noise. If the timber beneath your laminate already creaks or shifts, it’s worth checking our guide on how to fix a squeaky floor before installing your underlay.

Best fix: Fibreboard underlay
It adds structure, helps level minor imperfections and supports the locking system far better than foam.

Why it works:

• Levels small dips and bumps
  
• Prevents laminate movement
  
• Helps the floor feel firmer and more professional
  

Best for: Victorian terraces, older semis and any room with a slightly uneven timber subfloor.

If You Need the Cheapest Working Solution

If you’re working with a tight budget but still want something that performs reliably, the safest pick is the simplest one.

Best fix: Standard foam underlay (but only on dry timber subfloors)

Why it works:

• Lowest cost option
  
• Quick to install for DIY projects
  
• Adds enough comfort for spare rooms or rentals
  

Important: Avoid using plain foam on concrete. If you’re installing laminate flooring on concrete, you must choose foam and foil underlay with a built-in DPM. It’s the minimum safe option to protect the boards from rising moisture.

Best for: Guest rooms, rentals, utility areas and short-term refurbishments.

Step-by-Step: How to Install Laminate Underlay Properly

Fitting underlay isn’t complicated, but a few minor details make the difference between a quiet, stable laminate floor and one that creaks, shifts or wears out early. The idea is simple: lay each sheet tight and flat, tape every joint so the underlay can’t move, and always leave proper expansion gaps around the edges. Most problems start when homeowners overlap the underlay (you should never overlap unless it’s a foil DPM layer designed for it), skip tapelines, or push the material right against the wall. These mistakes trap moisture, cause hollow spots, and make the laminate click system work harder than it should, leading to noise and long-term damage. Whether you’re working on concrete with a foil-backed DPM or on timber with foam or fibreboard, the rules are the same: keep the layout smooth, secure the joins, and leave space for the boards to breathe.

If you’ve read this far, you already know that choosing the best underlay for laminate flooring depends on your subfloor, your room, and what problems you’re trying to solve. Whether you want warmth, better soundproofing, help with uneven floors or the simplest budget option, the right underlay does more for your laminate than most people realise. If you’d like tailored guidance for your home, or want a quick check before you buy, you can get a free quote from Flooring Surgeons, and we’ll point you to the safest choice for your floor.

Haniye Ayanmanesh

As an expert writer for Flooring Surgeons, I combine technical SEO knowledge with a practical understanding of flooring, producing content that helps users make confident decisions while supporting long-term organic growth.