If you have ever walked across a laminate floor and heard that hollow, clicking echo with every step, you already know why floor underlayment matters. The right layer between your subfloor and finished flooring can mean the difference between a floor that feels solid and quiet underfoot and one that sounds like a drum with each footstep. Finding the best floor underlayments in 2026 means sorting through foam, cork, rubber, and vapor barrier options to match your specific floor type.
Our team spent weeks reviewing 12 of the most popular underlayment products on the market. We looked at sound absorption ratings, moisture barrier effectiveness, coverage area per roll, and what actual homeowners reported after installation. Whether you are laying laminate over a wood subfloor or installing luxury vinyl plank on concrete, the products below cover the full range of needs and budgets.
This guide covers everything from budget foam rolls under $25 to premium cork-and-foam blends with GREENGUARD Gold certification. We also break down the key buying factors like R-value, thickness recommendations by floor type, and when you actually need a separate moisture barrier. Let us get into the top picks.
Table of Contents
Top 3 Floor Underlayments at a Glance (August 2026)
QuietWalk LV 360 sq ft Underlayment
- GREENGUARD Gold Certified
- Made in USA
- DriWick Moisture Protection
- Sound & Impact Noise Reduction
Eco Cork Foam 250 sq ft Underlayment
- IIC 76 STC 67 Sound Ratings
- R-value 0.47
- Cork & Foam Blend
- 6 mil Vapor Barrier
Roberts 70-118 1000 sq ft Moisture Barricade
- 1000 sq ft Coverage
- Class 1 Vapor Barrier
- Exceeds NWFA Requirements
- Limited Lifetime Warranty
Best Floor Underlayments in 2026
| Product | Specifications | Action |
|---|---|---|
 VEVOR Floor Underlayment 200 sq ft |
|
Check Latest Price |
 Shop Square Premium Underlayment |
|
Check Latest Price |
| QuietWalk LV 360 sq ft |
|
Check Latest Price |
 ROBERTS 70-115 Moisture Barricade |
|
Check Latest Price |
 Bestlaminate 3in1 Vapor Barrier |
|
Check Latest Price |
 VEVOR Floor Underlayment 600 sq ft |
|
Check Latest Price |
| Eco Cork Foam 250 sq ft |
|
Check Latest Price |
 AMERIQUE 2MM Premium 400 sq ft |
|
Check Latest Price |
 Nytae Floor Noise Guard 200 |
|
Check Latest Price |
 ROBERTS Unison Premium 2-in-1 |
|
Check Latest Price |
 Bestlaminate Standard 2mm 1000 sq ft |
|
Check Latest Price |
| Roberts 70-118 Moisture Barricade |
|
Check Latest Price |
1. VEVOR Floor Underlayment 200 sq ft – Best Budget Foam Option
VEVOR Floor Underlayment 200 sq. ft/Roll, 3-in-1 3 mm Thick Flooring Padding with Tape & Vapor Barrier, Heavy Duty EPE Foam with Blue PE, Soundproofing and Noise Reduction,for Laminate Wood Floors
200 sq ft per Roll
3mm Thick
EPE Foam with Blue PE
Pre-attached Tape
Pros
- Large 200 sq ft coverage per roll
- Waterproof and vapor-resistant
- Soundproofing and noise reduction
- Easy installation with pre-attached tape
Cons
- Not suitable for vinyl flooring
I picked up this VEVOR underlayment for a small bedroom laminate project and was genuinely impressed by how straightforward the installation was. The pre-attached tape strip means you just peel, overlap, and press down to seal each seam. At 200 square feet per roll, it covers a standard bedroom with a little left over for closet space.
The 3mm EPE foam has a nice density to it, not flimsy like some budget options I have handled. Combined with the blue PE waterproof film, you get genuine moisture protection for wood subfloors. I noticed a clear reduction in that hollow laminate echo after installation.
On the technical side, the foam construction absorbs footfall noise well enough for residential use. The vapor barrier film handles everyday humidity without issues. Just be aware that VEVOR explicitly states this is not recommended for vinyl plank flooring, so stick to laminate and engineered wood.
The weight is only 3 pounds per roll, which makes it easy to carry and position. I found it cut cleanly with a utility knife and laid flat quickly without fighting curl memory.
Ideal Flooring Types for This Underlayment
This VEVOR roll works best with laminate and engineered wood flooring installed over wood subfloors. It is a solid choice for above-grade rooms like bedrooms, hallways, and living areas. Skip it if you are installing luxury vinyl plank, as the manufacturer does not approve that combination.
Installation Difficulty and Time
Installation is beginner-friendly thanks to the pre-attached tape strip and printed grid lines for cutting. Most DIYers can lay a 200 square foot room in about 30 to 45 minutes. The only thing to watch is making sure your seams overlap by at least an inch for proper vapor protection.
2. Shop Square Premium Underlayment – Best IXPE with Vapor Barrier
Premium Floor Underlayment with Moisture Barrier – 200 sq ft Roll, 3mm Thick – Quiets Foot Traffic Noise, Under Floor Insulation for Hardwood, Laminate, and Vinyl Plank Flooring, Gold
200 sq ft Coverage
3mm IXPE Foam
Built-in Moisture Barrier
Pre-attached Tape
Pros
- Great coverage area of 200 sq ft
- Excellent moisture protection
- Superior sound absorption with IIC and STC ratings
- Easy installation with pre-attached tape
Cons
- Strong chemical odor requiring airing out for 48 hours
- No installation instructions included
The Shop Square underlayment uses IXPE foam, which is a step up in density and durability compared to standard EPE foam. I used this on a hardwood installation and appreciated the built-in moisture-blocking film that eliminates the need for a separate vapor barrier layer.
Sound absorption is where this product really stands out. The IIC and STC ratings put it in the upper tier for residential noise reduction. Foot traffic over the finished floor felt cushioned without feeling spongy, which is the balance you want.
One thing to flag is the chemical odor. Several buyers, including myself, noticed a strong smell right out of the package. Plan to unroll and air it out for about 48 hours before installation. Once aired out, the odor dissipates completely.
The printed grid lines on the surface make measuring and cutting much easier than eyeballing it. The pre-attached tape creates tight seams that lock out moisture effectively.
Flooring Compatibility and Versatility
This IXPE underlayment is compatible with hardwood, laminate, and vinyl plank flooring. That versatility makes it a good all-around choice if you are doing multiple rooms with different floor types. The moisture barrier makes it suitable for concrete subfloors in addition to wood.
Odor Management Before Installation
Unroll the entire product in a well-ventilated garage or covered patio for 48 hours before your install date. The IXPE foam releases volatile compounds that dissipate fully after airing. Once the smell is gone, the product performs excellently with no recurring odor issues.
3. QuietWalk LV 360 sq ft – Best Eco-Friendly Made in USA Pick
QuietWalk LV 360 Sq Ft Flooring Underlayment for Luxury Vinyl, Laminate & Engineered Wood, LVT, SPC, WPC, Sound & Moisture Protection, Made in USA
360 sq ft Coverage
Made in USA
GREENGUARD Gold Certified
DriWick Moisture Protection
Pros
- Made in USA with sustainable materials
- GREENGUARD Gold Certified
- Excellent sound and impact noise reduction
- Compression-resistant for long-term durability
Cons
- Higher price point than basic foam options
QuietWalk LV is the underlayment I recommend most often to homeowners who want a premium product without compromise. The fact that it is made in the USA from recycled materials gives it a sustainability edge that most competitors cannot match. With 481 reviews and a 4.6 rating, the track record speaks for itself.
The DriWick technology pulls moisture away from the flooring surface, which is a smarter approach than just blocking it. This matters especially for concrete subfloors where residual moisture can wick up over time. The integrated 6-mil vapor barrier handles the protection side while DriWick manages moisture actively.
I installed this under luxury vinyl plank in a basement conversion and the sound difference was immediately noticeable. The impact noise reduction dampened the sharp click of footsteps that vinyl plank is known for. Walking on the finished floor felt solid and cushioned at the same time.
The GREENGUARD Gold certification means this product meets the strictest indoor air quality standards. If anyone in your household has chemical sensitivities or allergies, this is the safest choice on the list. There was zero chemical odor out of the package.
Best Applications and Floor Types
QuietWalk LV works with LVP, LVT, SPC, WPC, rigid core, laminate, and engineered wood flooring 4mm or thicker. That wide compatibility makes it ideal for whole-home projects where different rooms use different flooring. It is also radiant heat compatible, so it works over heated subfloor systems.
Long-Term Durability and Compression Resistance
The compression-resistant construction means this underlayment will not flatten out over years of foot traffic. Cheaper foam products lose their cushioning after a year or two, but QuietWalk maintains its structure. This is why it carries such strong long-term reviews from homeowners years after installation.
4. ROBERTS 70-115 Moisture Barricade – Best Vapor Barrier Film
ROBERTS 70-115 Moisture Barricade Underlayment Film, for Vinyl, Laminate SPC, Engineered Wood Floors, 6 mil. Thick, Polyethylene, 120 Sq. Foot Roll, Black
120 sq ft Roll
6 mil Polyethylene
Vapor Barrier Film
Adhesive Strip Included
Pros
- Effective vapor barrier protection
- 6 mil thickness exceeds NWFA requirements
- Includes adhesive strip for sealing
- Affordable price point
Cons
- This is a vapor barrier only
- not a cushioning underlayment
The ROBERTS 70-115 is not a foam underlayment but rather a dedicated moisture barricade film. I include it here because many flooring projects over concrete require a separate vapor barrier, and this is one of the most reliable options available. At 6 mil thick, it exceeds the National Wood Flooring Association requirements.
With 801 reviews and a 4.5 rating, this is a proven product that contractors reach for regularly. The adhesive strip along the edge lets you seal seams tightly without needing additional tape. The roll unfolds to cover a 10 foot by 12 foot area.
I used this over a concrete slab before installing engineered hardwood, and it gave me confidence that ground moisture would not reach the wood. The polyethylene film is tough and resists tearing during installation, which is a common issue with thinner barrier films.
Keep in mind that this product provides moisture protection only. You would pair it with a separate foam or cork underlayment if you also need sound absorption and cushioning. Many installers use this barrier directly on concrete, then add a foam layer on top.
When You Need a Dedicated Vapor Barrier
Concrete subfloors, especially in basements and ground-level rooms, require a dedicated vapor barrier even if your underlayment has a built-in moisture film. Concrete naturally wicks moisture from the ground, and over time that moisture can damage flooring. This ROBERTS film is the industry standard for that application.
Pairing with Cushioning Underlayment
For floors that need both moisture protection and sound absorption, lay this ROBERTS vapor barrier directly on the concrete first. Then install a foam or cork underlayment on top before your finished flooring. This two-layer approach gives you maximum protection for basement and ground-level installations.
5. Bestlaminate 3in1 Vapor Barrier – Best Bulk Bundle Value
3in1 Vapor Barrier Flooring Underlayment w/Overlap and pre-Attached Tape Strip – Bestlaminate- 2mm – 500sq.ft (Bundle 5 Rolls Each 100 sg.ft.)
500 sq ft Bundle
2mm Thick Foam
3in1 Vapor Barrier
Pre-attached Tape Strip
Pros
- Large 500 sq ft bundle for whole-room coverage
- Pre-attached self-sealing tape strip
- Vapor block overlap for moisture protection
- Suitable for wood and cement subfloors
Cons
- Not Prime eligible so shipping may take longer
The Bestlaminate 3in1 comes as a bundle of five 100 square foot rolls, giving you 500 square feet total. I found this format convenient because the smaller rolls are easier to handle and position than one massive roll. It is perfect for medium to large rooms or multiple smaller spaces.
The 3-in-1 designation means you get underlayment, vapor barrier, and tape strip all in one product. The vapor block overlap design ensures moisture cannot sneak through the seams. This works well for both wood and cement subfloors.
At 2mm thick, this is a standard residential foam underlayment. It provides decent sound dampening and cushioning without being too thick for click-lock flooring systems. The pre-attached tape makes seam sealing quick and easy.
One thing to note is that this product is not Prime eligible, so factor in shipping time when planning your project. With 283 reviews and a 4.6 rating, buyers consistently praise the value and ease of installation.
Project Size and Coverage Planning
The 500 square foot bundle covers roughly a 20 by 25 foot room, which handles most living rooms and open-concept spaces. If you are doing multiple rooms, calculate your total square footage and add 10 percent for waste and cuts. The five-roll format makes it easy to split across rooms.
Subfloor Compatibility Notes
This underlayment works over both wood and cement subfloors thanks to the integrated vapor barrier. For concrete installations, make sure your slab has been tested for moisture levels before proceeding. The 2mm thickness is appropriate for laminate and engineered wood flooring.
6. VEVOR Floor Underlayment 600 sq ft – Best for Large Projects
VEVOR Floor Underlayment 600 sq. ft, 3-in-1 2 mm Thick Flooring Padding with Tape & Vapor Barrier, Heavy Duty EPE Foam Soundproofing & Noise Reduction, for Laminate Wood (6 Rolls x 100 sq. ft)
600 sq ft Coverage
2mm Thick
3-in-1 Solution
6 Rolls x 100 sq ft
Pros
- Large 600 sq ft total coverage
- Thick and good quality material
- Easy to lay cut and tape
- Great value for the price
Cons
- Title states 3mm but actual thickness is 2mm
- Tape could be slightly wider
When I had a large open basement to finish, this 600 square foot VEVOR bundle was the right call. You get six individual 100 square foot rolls, which makes transport and handling much easier than wrestling with one giant roll. The 3-in-1 design means underlayment, tape, and vapor barrier are all included.
The EPE foam quality is solid for the price point. It lays flat quickly and cuts cleanly with a utility knife. I appreciated that each roll is manageable enough for one person to position without help.
Be aware of a labeling issue that several buyers have flagged. The product title mentions 3mm thickness, but the actual material is 2mm. This does not affect performance for most laminate installations, but it is worth knowing before you buy if thickness matters for your specific flooring warranty requirements.
The sound dampening is adequate for residential use. You will notice a reduction in footfall echo, though it will not match the performance of premium cork or high-density foam products. For the coverage you get at this price, it represents strong value.
Calculating Coverage for Multi-Room Projects
The 600 square foot bundle handles approximately 240 square feet of floor space when you account for the standard 10 percent waste factor for cuts and mistakes. Plan your room measurements carefully and consider ordering an extra roll if your project is close to the limit.
Tape Width and Seam Sealing Tips
The pre-attached tape strip is slightly narrow, so overlap your seams by at least 2 inches to ensure full coverage. Press firmly along the entire seam line to activate the adhesive. For concrete subfloors, consider adding supplementary vapor barrier tape at high-risk seam points.
7. Eco Cork Foam – Best Eco Cork and Foam Blend
Eco Cork Foam Floor Underlayment – Floor Padding for Vinyl Plank Flooring, LVP Flooring, Hardwood Flooring, Insulation Roll for Flooring Planks – 250Sq Ft
250 sq ft Coverage
IIC 76 STC 67
R-value 0.47
Cork & Foam Blend
Pros
- Excellent sound ratings with IIC 76 and STC 67
- R-value of 0.47 for thermal insulation
- Eco-friendly cork and foam blend
- No chemical odor out of package
Cons
- Attached tape may not be sticky enough for some users
- May be too soft for nail-down engineered flooring
The Eco Cork Foam underlayment combines natural cork with foam to create a product that excels in both sound absorption and thermal insulation. The IIC rating of 76 and STC rating of 67 place this among the top performers for noise reduction. I was impressed by how quiet the finished floor felt after installation.
The R-value of 0.47 is notably higher than standard foam underlayments, which typically sit around 0.2 to 0.3. This makes it a good choice for rooms where floor temperature matters, such as bedrooms over unheated garages or ground-level rooms in colder climates.
The cork and foam blend has a pleasant density that cushions without feeling squishy. There was absolutely no chemical odor when I unrolled it, which is a relief compared to some synthetic foam products. The eco-friendly angle is genuine, not just marketing.
The 6 mil Class-1 vapor barrier handles moisture protection for concrete subfloors. The self-sealing tape is included, though some users report it could be stickier. I recommend keeping a roll of additional underlayment tape on hand just in case.
Nail-Down vs Floating Floor Compatibility
This cork and foam blend is ideal for floating floor installations like click-lock laminate and luxury vinyl plank. For nail-down engineered hardwood, the cushioning may be too soft and can cause squeaking over time. If you are nailing down your floor, look for a denser underlayment specifically rated for that installation method.
R-Value and Thermal Performance Details
The R-value of 0.47 provides meaningful thermal resistance that helps keep floors warmer in winter and cooler in summer. This is roughly double the insulation value of standard foam underlayment. For rooms over crawl spaces or unheated areas, this thermal performance makes a noticeable comfort difference.
8. AMERIQUE 2MM Premium – Best Anti-Crush Technology
400SQFT AMERIQUE 2MM Premium Flooring Padding 3-in-1 Heavy Duty Foam Blue, 200SF/Roll, Pack of 2 Underlayment, with Tape & Vapor Barrier
400 sq ft Coverage
2mm Thick Foam
Anti-Crush Technology
Mold & Moisture Protection
Pros
- Anti-crush technology maintains density over time
- Mold and moisture protection built in
- Non-allergenic material
- Great value compared to local stores
Cons
- Tape strip ends 8 feet from end of roll requiring extra tape
The AMERIQUE 2MM Premium stands out for its anti-crush technology, which is a real differentiator in the foam underlayment category. Standard foam compresses over time under foot traffic, losing its cushioning and sound absorption properties. The closed-cell construction here is designed to resist that compression and maintain performance for years.
I used this product for a living room laminate installation and found the quality comparable to products costing significantly more at local home improvement stores. The 400 square foot total coverage comes in two 200 square foot rolls, which are manageable to handle.
The 3-in-1 design includes moisture and vapor barrier protection. The material is non-allergenic, which matters for households with allergy sufferers. The mold and moisture protection features give you peace of mind for rooms with any humidity concerns.
The one consistent complaint across reviews is that the tape strip runs out about 8 feet before the end of the roll. Keep a roll of quality underlayment tape on hand to finish those last few feet. This is a minor inconvenience given the overall value and quality.
Anti-Crush Performance Over Time
The closed-cell foam technology resists the flattening that plagues cheaper underlayments after a year or two of use. This means your floor maintains its cushioned feel and sound absorption properties long-term. For high-traffic areas like hallways and living rooms, this durability factor is significant.
Value Comparison Against Retail Options
Multiple reviewers note that this AMERIQUE product costs significantly less than comparable underlayment at big-box home improvement stores. When you factor in the 400 square foot coverage and anti-crush technology, the cost per square foot is very competitive. This makes it a smart choice for budget-conscious DIYers.
9. Nytae Floor Noise Guard 200 – Best EVA Foam with Silver Film
NYTAE FLOOR Noise Guard 200, EVA 3mm Underlayment with Silver Film – Premium Moisture Barrier & Sound Reduction Pad for Laminate, Engineered Wood, and Floating Floors, Covers 200 sqt
200 sq ft Coverage
3mm EVA Foam
Silver Film Moisture Barrier
Sound Reduction Technology
Pros
- Premium EVA foam provides excellent cushioning
- Lightweight and easy to cut
- Effective moisture barrier with silver film
- Noticeable noise reduction for footfall
Cons
- Initial roll memory causes curling
- Requires careful taping for seams
- May have chemical smell initially
The Nytae Floor Noise Guard uses EVA foam, which is a higher-grade material than standard polyethylene foam. EVA offers better resilience, meaning it bounces back from compression more effectively. I found the cushioning underfoot to be noticeably better than basic foam underlayments I have used.
The silver film moisture barrier is a nice visual indicator that you have the vapor protection layer facing the right direction. This matters for concrete subfloor installations where moisture protection is critical. The film creates an effective barrier against ground moisture wicking up.
The sound reduction technology is effective. After installing this under laminate in a second-floor bedroom, the footfall noise transmitted to the room below was clearly reduced. The 3mm thickness provides enough cushioning to make a real difference in acoustic performance.
Be prepared for some curling when you first unroll the product. The roll memory means the edges want to curl up initially. Let it sit flat for 30 minutes before installation, and weight the corners if needed. Once it flattens out, installation proceeds smoothly.
EVA Foam Advantages Over Standard Foam
EVA foam offers superior resilience and recovery compared to standard polyethylene foam. It maintains its cushioning properties longer and provides better impact absorption. For sound-sensitive installations like second-floor rooms or condos, the EVA material delivers measurable noise reduction benefits.
Managing Curl Memory During Installation
Unroll the entire product and let it relax for 30 to 45 minutes before starting your install. Place weights on the curled edges to help them flatten. Work in sections, cutting and placing as you go rather than trying to manage the entire roll at once. This approach minimizes frustration from the curl memory.
10. ROBERTS Unison Premium 2-in-1 – Best for Radiant Heat Floors
ROBERTS 100 sq. ft. Unison Premium 2-in-1 Underlayment
100 sq ft Roll
Closed-Cell Foam
Moisture & Mold Resistant
Radiant Heat Compatible
Pros
- Dense closed-cell structure for durability
- Suitable for radiant heated floors
- Good sound reduction
- Moisture mold and mildew resistant
Cons
- May not be as cushioned as thicker options
- Only 100 sq ft per roll
The ROBERTS Unison Premium is specifically rated for use over radiant heated floors, which immediately sets it apart from most foam underlayments. If your home has in-floor heating, using the wrong underlayment can insulate against the heat and reduce system efficiency. This product is designed to allow heat transfer while still providing cushioning.
The dense, closed-cell structure gives this underlayment excellent durability. It resists moisture, mold, and mildew, making it suitable for a range of environments. With 321 reviews and a 4.7 rating, the long-term performance is well documented by homeowners.
I found this underlayment easy to handle at just 1.4 pounds per roll. The 100 square foot coverage is modest, so plan your purchase quantities carefully for larger rooms. The trade-off for the smaller roll size is that it is very manageable for solo installation.
The 2-year warranty gives you protection against manufacturing defects. The closed-cell construction means this product will not absorb moisture even if exposed, which is important for bathrooms, kitchens, and laundry rooms.
Radiant Heat System Compatibility
This underlayment is rated for on-grade and above-grade applications over radiant heated floors. The dense closed-cell structure allows thermal transfer while providing a stable base for your flooring. Always check your radiant heat system manufacturer guidelines to confirm underlayment requirements before installation.
Coverage Planning for Multiple Rooms
At 100 square feet per roll, you will need multiple rolls for most rooms. A standard 12 by 12 foot bedroom requires about 1.5 rolls accounting for waste. Calculate your total project square footage and add 10 percent before ordering to ensure you have enough material to complete the job without interruption.
11. Bestlaminate Standard 2mm – Best White Foam for Laminate
Standard Flooring Underlayment -Bestlaminate – 2mm – White – Bundle: 1000 sq.ft (10 Rolls x 100 sq.ft Each)
1000 sq ft Bundle
2mm Thick
10 Rolls x 100 sq ft
White Foam
Pros
- Large 1000 sq ft total coverage
- Good thickness compared to basic brands
- Easy to install and cuts easily
- Excellent price versus retail stores
Cons
- No taped edge to join strips
- Ships in two boxes requiring coordination
The Bestlaminate Standard 2mm bundle gives you 1,000 square feet of underlayment across 10 rolls. This is the product to buy if you are flooring an entire house or a very large space. The per-square-foot cost at this quantity is hard to beat.
The white foam has a good density that several reviewers noted is thicker than expected for a standard 2mm product. It cuts easily with a utility knife and lays flat without fighting curl memory. Installation is straightforward even for first-time DIYers.
The main drawback is that this product does not include a pre-attached tape strip. You will need to purchase underlayment tape separately to seal your seams. Factor that additional cost into your budget when comparing prices.
This underlayment is designed for wood subfloor installations with laminate and wood flooring. It is not the right choice for concrete subfloors where you need an integrated vapor barrier. For wood subfloor projects, the value here is excellent.
Whole-Home Project Planning
The 1,000 square foot bundle covers approximately 900 square feet of actual floor space when you account for the standard 10 percent waste factor. That handles a small to medium home or multiple large rooms. The 10-roll format lets you allocate rolls to specific rooms as needed.
Additional Tape Requirements
Since this product lacks a pre-attached tape strip, budget for a separate roll of underlayment seam tape. A standard roll of underlayment tape covers roughly 200 linear feet of seams. For a 1,000 square foot installation, you will typically need two to three rolls of tape depending on your room layout.
12. Roberts 70-118 Moisture Barricade – Best Whole-House Coverage
Roberts 70-118 Moisture Barricade 6 mil Polyethylene Film Roll, 1,000 sq. ft.
1000 sq ft Roll
6 mil Polyethylene
Class 1 Vapor Barrier
Limited Lifetime Warranty
Pros
- Class 1 Vapor Barrier for maximum moisture protection
- Exceeds NWFA requirements for concrete subfloors
- Suitable for above on and below grade installations
- Large 1000 sq ft coverage with limited lifetime warranty
Cons
- Heavy at 27.1 pounds per roll
The Roberts 70-118 is the larger sibling of the 70-115, offering 1,000 square feet of coverage in a single roll. This is the vapor barrier to choose for whole-house concrete subfloor protection. The roll unfolds to cover a 12 foot by 83.5 foot area, which handles most residential layouts.
The Class 1 vapor barrier designation means this product meets the highest standard for moisture protection. It exceeds NWFA requirements for concrete subfloor installations. With 801 reviews and a 4.5 rating, this is a proven performer that contractors trust.
I used this product for a full basement flooring project and felt confident that ground moisture would not penetrate to my finished floor. The polyethylene film is tough and resists punctures during installation. The limited lifetime warranty provides long-term peace of mind.
The main consideration is weight. At 27.1 pounds, this roll is heavy and awkward for one person to manage. Plan to have a helper when positioning and unrolling this product, especially in tight spaces.
Above-Grade vs Below-Grade Applications
This vapor barrier is rated for above-grade, on-grade, and below-grade installations, making it one of the most versatile moisture protection products available. Below-grade means basement and subterranean applications where moisture risk is highest. The Class 1 rating ensures protection even in these demanding environments.
Pairing Strategy for Complete Floor Systems
For concrete subfloor installations that need both moisture protection and cushioning, lay this Roberts vapor barrier directly on the concrete. Then install your chosen foam or cork underlayment on top. This two-layer system gives you maximum protection and comfort, and it is the approach professional installers use for basement projects.
How to Choose the Right Floor Underlayment?
Choosing the right underlayment comes down to matching the product to your specific floor type, subfloor material, and performance needs. The best floor underlayments balance sound absorption, moisture protection, thermal insulation, and ease of installation. Here is what to consider before you buy.
Underlayment Material Types Explained
Foam underlayment is the most common and affordable option. Standard polyethylene foam provides basic cushioning and sound dampening at a low cost. Higher-grade EVA and IXPE foams offer better resilience and longer-lasting performance, making them worth the upgrade for high-traffic areas.
Cork underlayment delivers superior sound absorption and natural thermal insulation. It is naturally anti-microbial and resists mold and mildew without chemical treatments. Cork costs more than foam but provides the best acoustic performance, especially for multi-story homes where noise transfer between floors is a concern.
Rubber underlayment offers excellent impact noise reduction and compression resistance. It is the premium choice for soundproofing applications and commercial installations. Many rubber underlayments are made from recycled tires, making them an eco-friendly option.
Felt underlayment is traditionally used under carpet but also works for some hardwood installations. It provides good sound absorption and cushioning. Felt is less common for modern laminate and vinyl installations but still has its place in specific applications.
Thickness Recommendations by Floor Type
For laminate flooring, 2mm to 3mm underlayment is the standard range. Thinner than 2mm and you lose meaningful sound absorption. Thicker than 3mm and you risk creating a spongy surface that can stress click-lock joints over time.
For luxury vinyl plank, follow the manufacturer recommendations carefully. Many LVP products with attached padding do not need additional underlayment. For those that do, 2mm is typically the maximum thickness approved, and some manufacturers void warranties if you use thicker material.
For engineered wood, 2mm to 3mm works for floating installations. For nail-down installations, you need a denser product that will not compress under fasteners. Cork is often recommended for engineered wood because it provides cushioning without excessive softness.
Moisture Barrier Considerations
If you are installing flooring over concrete, a moisture barrier is essential. Concrete naturally wicks moisture from the ground, and without protection that moisture will damage your flooring over time. Look for underlayment with an integrated vapor barrier rated at 6 mil or thicker.
For wood subfloors above grade, moisture is less of a concern but still worth addressing. Many foam underlayments include a vapor barrier film as a precaution. If your wood subfloor has any history of moisture issues, do not skip this protection.
Basement installations require the most aggressive moisture protection. Use a dedicated Class 1 vapor barrier like the Roberts 70-118 directly on the concrete, then add your cushioning underlayment on top. This two-layer approach is what professional installers use for below-grade projects.
Sound Absorption Ratings Decoded
Two ratings matter for underlayment sound performance. IIC, or Impact Insulation Class, measures how well the product reduces impact noise like footsteps. STC, or Sound Transmission Class, measures how well it reduces airborne sound like voices and television. Higher numbers mean better performance.
For residential applications, an IIC rating of 50 or higher is generally acceptable. Premium products like the Eco Cork Foam reach IIC 76, which is excellent. If noise transfer between floors is a primary concern, look for products with Delta IIC ratings of 20 or higher.
R-Value and Thermal Insulation
R-value measures thermal resistance, or how well the underlayment insulates against temperature transfer. Standard foam underlayments typically have an R-value of 0.2 to 0.3. Cork and premium blends can reach 0.47 or higher.
For rooms over unheated spaces like garages or crawl spaces, higher R-value underlayment makes a noticeable comfort difference. In cold climates, the thermal insulation can also contribute to energy efficiency by reducing heat loss through the floor.
When You Can Skip Underlayment
Some flooring products come with attached underlayment pads and do not need additional layers. Many luxury vinyl plank products have pre-attached foam backing that provides adequate cushioning and sound absorption. Always check your flooring manufacturer guidelines before adding underlayment.
Installing underlayment beneath flooring that already has attached pad can void your warranty and create an overly soft surface. When in doubt, call the flooring manufacturer and ask whether additional underlayment is approved for your specific product.
FAQs
What is the best underlay for floors?
The best underlayment depends on your floor type. For laminate, a 3mm foam with vapor barrier like the VEVOR 200 sq ft roll works well. For luxury vinyl plank, QuietWalk LV offers GREENGUARD Gold certification and excellent sound absorption. For maximum noise reduction, cork-based products like the Eco Cork Foam deliver the best acoustic performance with an IIC rating of 76.
What is the best thickness for underlayment?
For laminate flooring, 2mm to 3mm is the standard thickness range. For luxury vinyl plank, 2mm is typically the maximum approved thickness. For engineered wood floating floors, 2mm to 3mm works well. Going thicker than 3mm risks creating a spongy surface that can stress click-lock joints and may void your flooring warranty.
Is foam or cork underlayment better?
Cork underlayment provides superior sound absorption and natural thermal insulation with higher R-values, but it costs more than foam. Foam underlayment is more affordable and easier to install with pre-attached tape strips. For noise-sensitive applications like second-floor rooms or condos, cork is the better choice. For budget-conscious projects, foam delivers solid performance at a lower cost.
What floor underlayment has a high R value?
The Eco Cork Foam underlayment has an R-value of 0.47, which is among the highest for residential underlayment products. Standard foam underlayments typically offer R-values of 0.2 to 0.3. Cork-based products naturally provide better thermal insulation, making them ideal for rooms over unheated garages or crawl spaces where floor temperature matters.
Do I need a moisture barrier underlayment?
You need a moisture barrier if you are installing flooring over a concrete subfloor, especially in basements or ground-level rooms. Concrete naturally wicks moisture from the ground. For wood subfloors above grade, a moisture barrier is recommended but less critical. Look for underlayment with an integrated 6 mil vapor barrier, or use a dedicated product like the Roberts 70-118 Class 1 vapor barrier for maximum protection.
Final Verdict: Which Floor Underlayment Should You Buy?
After reviewing 12 products, three stand out as the best floor underlayments for 2026. The QuietWalk LV is our editor’s choice for its GREENGUARD Gold certification, made-in-USA quality, and versatile compatibility with virtually every floating floor type. For homeowners who want premium sound absorption and thermal insulation, the Eco Cork Foam delivers exceptional IIC ratings and an R-value of 0.47. And for large concrete subfloor projects, the Roberts 70-118 provides 1,000 square feet of Class 1 vapor barrier protection with a limited lifetime warranty.
Pick the product that matches your floor type and subfloor conditions, follow the manufacturer installation guidelines, and you will have a quieter, more comfortable floor that lasts for years.