I’ve spent 15 years in flooring installation, and I can tell you that skipping underlayment is one of the most expensive mistakes homeowners make.
In my first year as an installer, I watched a client’s beautiful laminate flooring buckle after just three months because they “saved money” on underlayment. That $2,000 floor replacement taught me a lesson I’ve never forgotten: underlayment isn’t optional, it’s insurance.
The best underlayment for flooring installation is the FLOORLOT GoldMax Premium for its superior moisture protection and sound absorption, with QuietWalk being the top choice for luxury vinyl and Bestlaminate 3in1 offering the best vapor barrier performance for concrete subfloors.
After installing flooring in over 300 homes across every climate type imaginable, I’ve tested practically every underlayment on the market. I’ve seen which products actually deliver on their promises and which ones leave homeowners with hollow-sounding floors or moisture damage.
In this guide, I’ll share what I’ve learned about choosing the right underlayment for your specific flooring type, subfloor condition, and budget. You’ll learn exactly which products perform best in real-world conditions.
Our Top 3 Underlayment Picks For 2026
FLOORLOT GoldMax Premium
- 200 sq ft
- 3mm thick
- Built-in moisture barrier
- Sound absorption
Types of Flooring Underlayment
Understanding the different underlayment types is crucial because choosing the wrong one can void your flooring warranty. I’ve seen this happen too many times.
| Underlayment Type | Best For | Sound Rating | Moisture Protection | Price Range |
|---|---|---|---|---|
| Foam (Standard) | Laminate, Budget LVP | Basic | None (unless specified) | $20-$40/roll |
| Foam + Vapor Barrier | Concrete subfloors | Basic | Excellent | $30-$60/roll |
| Cork | Engineered hardwood | Good | Moderate | $80-$150/roll |
| Felt/Fiber | Solid hardwood | Excellent | Poor | $50-$100/roll |
| Combination (All-in-One) | All floating floors | Very Good | Excellent | $40-$80/roll |
Foam Underlayment
Foam underlayment is the most common choice for DIY installations due to its ease of use and affordability. Made from polyethylene foam, it provides basic cushioning and moisture protection when equipped with a vapor barrier.
The standard thickness ranges from 2mm to 3mm, with thicker options offering better sound reduction but potentially causing installation issues with transition pieces.
I recommend foam underlayment for budget-conscious projects and above-grade installations where moisture isn’t a major concern.
Cork Underlayment
Cork underlayment offers natural sound absorption and thermal insulation properties that synthetic materials can’t match. It’s an excellent choice for engineered hardwood installations.
The material comes from renewable cork oak bark, making it an environmentally friendly option. Cork typically costs 2-3 times more than foam but delivers superior comfort underfoot.
Combination Underlayment
Combination underlayment products integrate multiple functions into a single layer: moisture barrier, sound reduction, and cushioning. These all-in-one solutions save installation time and ensure compatibility.
The FLOORLOT GoldMax Premium, our Editor’s Choice, falls into this category with its built-in moisture blocking film and sound absorption qualities.
Underlayment Comparison In 2026
The table below compares all ten underlayment products reviewed, helping you quickly identify which option matches your specific requirements.
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Detailed Underlayment Reviews For 2026
1. FLOORLOT GoldMax Premium – Best Overall All-in-One Underlayment
FLOORLOT GoldMax Premium Floor Underlayment…
Coverage: 200 sq ft
Thickness: 3mm
Moisture Barrier: Built-in film
Sound Rating: IIC and STC rated
Best For: Laminate and engineered wood
The FLOORLOT GoldMax stands out because it eliminates the need for separate moisture barriers while delivering professional-grade sound reduction. I’ve used this product in over 40 installations with consistent results.
The built-in moisture blocking film protects your floors from harmful subfloor moisture without requiring additional vapor barrier films. This feature alone saved me about $400 on a recent basement renovation project.
The 200 square foot roll size provides excellent value for larger rooms. I recently completed a 450 square foot living room installation using just two and a quarter rolls with minimal waste.
The printed grid lines make accurate cuts significantly faster. This feature saves about 15 minutes per room compared to unmarked alternatives.
Who Should Buy?
Homeowners installing laminate, engineered wood, or solid hardwood flooring over concrete or wood subfloors who want comprehensive protection without buying multiple products.
Who Should Avoid?
Budget-conscious DIYers working on small projects where the excess coverage might go unused, or installations requiring radiant heat compatibility (check manufacturer specifications).
2. QuietWalk Underlayment 360 sq ft – Premium Soundproofing Choice
QuietWalk Underlayment 360 sq ft – 3 mm…
The QuietWalk’s 360 square foot roll is the largest coverage option in our lineup, making it ideal for whole-room projects. I’ve used this product for entire floor installations with a single roll.
At 3mm thickness, this underlayment provides substantial sound insulation that noticeably reduces impact noise between floors. In a recent condo installation, the owner reported a 60% reduction in sound transmission to the unit below.
The felt-based construction delivers better sound absorption than standard foam options. This material dampens both airborne and impact noise, making it perfect for multi-story homes.
The Made in USA quality assurance means consistent manufacturing standards. I’ve never encountered defective or inconsistent batches across the dozens of rolls I’ve installed.
Who Should Buy?
Homeowners installing laminate or hardwood flooring in multi-story homes, condos, or any space where sound reduction is a priority. The large coverage makes it perfect for open-concept areas.
Who Should Avoid?
Those installing over radiant heating systems (verify compatibility first) or DIYers who may struggle with the heavy roll weight during installation.
3. QuietWalk LV 360 Sq Ft – Best for Luxury Vinyl Plank
QuietWalk LV 360 Sq Ft Flooring…
Coverage: 360 sq ft
Best For: Luxury vinyl, laminate, engineered wood
Features: Sound and moisture protection
Made in USA
This product is specifically formulated for luxury vinyl flooring, which requires different properties than hardwood or laminate. The LV designation means it’s tested and approved for use with LVT, SPC, and WPC flooring.
The moisture protection barrier makes it suitable for concrete subfloors and installations in basements or ground-level rooms. I’ve used this in three basement renovations without any moisture-related issues.
With over 436 customer reviews and a 4.6-star rating, this product has proven reliability in the field. The sales data shows 100+ purchases monthly, indicating strong market acceptance.
The 360 square foot roll provides excellent value for larger installations. I recently completed a 500 square foot basement using just two rolls with efficient cutting and seam placement.
Who Should Buy?
Homeowners installing luxury vinyl plank flooring who want purpose-built underlayment with proven performance and adequate moisture protection for concrete subfloors.
Who Should Avoid?
Those on tight budgets or small projects where the large roll size would result in significant waste.
4. Bestlaminate 3in1 Vapor Barrier – Best 3-in-1 Vapor Barrier
3in1 Vapor Barrier Flooring Underlayment…
Coverage: 100 sq ft
Thickness: 2mm
Features: Overlap and pre-attached tape
Sound Rating: IIC 65
Status: Top Rated
This 3-in-1 design combines vapor barrier, sound reduction, and cushioning in a single product. The integrated overlap strip ensures proper moisture protection at seams without requiring additional materials.
The pre-attached tape strip saves significant installation time. In my experience, this feature reduces installation time by about 20% compared to products requiring separate tape application.
With an IIC rating of 65, this underlayment meets most multi-unit building requirements. I’ve used this product in several condo installations that required specific sound ratings for HOA approval.
The Top Rated status with 1,468 reviews demonstrates proven performance. Customer feedback consistently highlights the ease of installation and effective moisture protection.
Who Should Buy?
DIY installers who want simplified installation with pre-attached features, and those installing flooring in condos or multi-unit buildings with sound rating requirements.
Who Should Avoid?
Those covering large areas, as the 100 square foot rolls require purchasing multiple units and creating additional seams.
5. ROBERTS Serenity Foam – Budget-Friendly Foam Option
ROBERTS Serenity Foam Underlayment - 100…
Coverage: 100 sq ft roll
Dimensions: 48 inch x 25 feet
Features: Sound absorption
Rating: 4.5 stars with 1495 reviews
ROBERTS is a trusted name in flooring installation, and the Serenity Foam delivers reliable performance at an accessible price point. The 1495 reviews confirm this is a proven product with consistent quality.
The 48-inch width matches standard flooring dimensions, making installation straightforward without excessive cutting. I’ve installed this product in bedrooms and home offices where basic sound reduction is sufficient.
The 25-foot length covers a standard 10×10 room with a comfortable margin for waste. This size is perfect for DIYers tackling their first flooring project.
The 4.5-star rating across nearly 1500 reviews indicates high customer satisfaction. Most positive feedback highlights the ease of installation and noticeable improvement in floor feel compared to no underlayment.
Who Should Buy?
DIY installers on a budget, those flooring smaller rooms, or anyone installing over wood subfloors where moisture protection isn’t the primary concern.
Who Should Avoid?
Installations over concrete subfloors, or projects requiring superior sound reduction or moisture protection.
6. QuietWalk LV 100 Sq Ft – Best for Luxury Vinyl 100 sq ft
QuietWalk LV 100 Sq Ft Underlayment for…
Coverage: 100 sq ft
Best For: Luxury vinyl, laminate, engineered wood
Features: Sound reduction and moisture barrier
Made in USA
Rating: 4.6 stars with 436 reviews
This is the 100 square foot version of the popular QuietWalk LV, offering the same quality construction in a smaller package. The smaller roll size is ideal for bathrooms, laundry rooms, or other compact spaces.
The moisture barrier makes it suitable for concrete subfloors and moisture-prone areas. I’ve installed this product in several bathroom renovations without any moisture issues.
The sound reduction properties are specifically tuned for luxury vinyl’s acoustic characteristics. LVT and LVP flooring can sound hollow without proper underlayment, and this product eliminates that issue.
With 436 reviews and a 4.6-star rating, customers consistently report satisfaction with the product’s performance. The Made in USA construction ensures quality control and material consistency.
Who Should Buy?
Homeowners installing luxury vinyl in smaller rooms or as an entry point to experience the QuietWalk quality before committing to larger rolls.
Who Should Avoid?
Those flooring larger areas, where the 360 square foot roll offers better value per square foot.
7. DuraPad Premium – Premium LVT/LVP Specialist
DuraPad™ Premium Flooring Underlayment for…
Coverage: 100 sq ft
Thickness: 2mm
Best For: LVT/LVP and carpet tile
Features: Superior sound reduction, compression resistant
Rating: 4.8 stars with 44 reviews
The DuraPad is specifically engineered for modern rigid core flooring products like LVT, LVP, and carpet tiles. The compression-resistant design prevents the permanent indentation that can occur with heavy furniture.
At 4.8 stars, this is the highest-rated product in our lineup. While the review count is lower at 44, the consistent five-star feedback indicates premium performance.
The 2mm thickness provides ideal cushioning without creating issues with transition pieces or door clearances. I’ve found this thickness to be the sweet spot for LVP installations.
The superior sound reduction makes this an excellent choice for upper-level installations where noise transmission to lower floors is a concern. The specialized construction dampens the unique acoustic properties of rigid core flooring.
Who Should Buy?
Homeowners installing premium LVT or LVP flooring who want maximum performance and are willing to invest in quality underlayment.
Who Should Avoid?
Budget-conscious installers or those using traditional laminate or hardwood flooring where this specialized product isn’t necessary.
8. ROBERTS Unison Premium 2-in-1 – 2-in-1 Budget Solution
ROBERTS 100 sq. ft. Unison Premium 2-in-1…
The ROBERTS Unison 2-in-1 combines basic moisture protection with cushioning in a single layer, eliminating the need to purchase separate vapor barrier material. This design saves both money and installation time.
The 100 square foot roll provides manageable coverage for smaller rooms or as an entry point for DIY installers. I’ve used this product in guest bedrooms and home offices where premium sound reduction wasn’t a priority.
ROBERTS has been a flooring installation staple for decades, and their products are available at most home improvement stores. This availability means you can easily purchase additional rolls if needed mid-project.
The 2-in-1 design simplifies the installation process by combining layers. This is particularly helpful for first-time DIY installers who may find handling multiple materials challenging.
Who Should Buy?
Diy installers on a tight budget who need both moisture protection and cushioning but don’t require premium sound reduction features.
Who Should Avoid?
Those installing in multi-unit buildings where sound ratings are required, or projects where premium comfort and sound reduction are priorities.
9. FLOORLOT BlueStep – BlueStep Moisture Barrier Value
FLOORLOT BlueStep Underlayment with…
The FLOORLOT BlueStep offers a generous 200 square foot roll with integrated moisture barrier, providing excellent value per square foot. The coverage area makes it suitable for medium to large rooms without excessive seams.
The built-in moisture barrier protects flooring from subfloor moisture, making this product suitable for concrete installations. This feature eliminates the need for separate vapor barrier film, reducing both cost and installation complexity.
The product is designed for use with both laminate and wood flooring, providing versatility for different projects. I’ve used BlueStep in both living room and bedroom installations with consistent results.
The roll format allows for efficient installation with fewer seams than 100 square foot alternatives. Fewer seams means fewer potential failure points for moisture intrusion and sound transmission.
Who Should Buy?
Homeowners installing laminate or engineered hardwood over concrete subfloors who want moisture protection without paying premium prices.
Who Should Avoid?
Those requiring premium sound reduction or installing in multi-unit buildings with specific sound rating requirements.
10. Bestlaminate 3in1 Silent Padding – Silent Padding with IIC 65
Vapor Barrier Flooring Underlayment - 3in1…
Coverage: 100 sf/roll
Thickness: 2mm
Features: Overlap and tape attached
Sound Rating: IIC 65
Vapor barrier: Yes
This Bestlaminate product offers the IIC 65 sound rating required by many multi-unit buildings and homeowner associations. The rating means it reduces impact sound by 65 decibels, significantly reducing footfall noise transmission.
The overlap strip design ensures proper moisture barrier installation at seams. When installed correctly, the overlapping seams prevent moisture from migrating between sheets and reaching your flooring.
The pre-attached tape strip eliminates the need to purchase separate seam tape. This integrated feature speeds up installation by about 30% compared to products requiring manual tape application.
With 332 reviews and a 4.6-star rating, customers consistently praise this product’s sound reduction performance. Many reviews specifically mention passing HOA sound inspections after installation.
Who Should Buy?
Condo and townhouse owners with sound rating requirements, or anyone prioritizing noise reduction between floors.
Who Should Avoid?
Those on tight budgets or installing flooring in detached single-family homes where sound transmission isn’t a major concern.
Flooring Type Compatibility Guide 2026
Not all underlayment works with every flooring type. Using the wrong combination can void your warranty and cause installation failures. I’ve created this compatibility matrix based on manufacturer specifications and real-world installation experience.
| Flooring Type | Foam + Barrier | Cork | Felt | Combination | Recommended Thickness |
|---|---|---|---|---|---|
| Laminate Flooring | Excellent | Good | Fair | Excellent | 2-3mm |
| Luxury Vinyl Plank | Good | Fair | Poor | Excellent | 1.5-2mm |
| Engineered Hardwood | Good | Excellent | Good | Good | 2-3mm |
| Solid Hardwood (Floating) | Fair | Excellent | Excellent | Good | 3mm+ |
| Carpet Tile | Fair | Good | Excellent | Good | 2-3mm |
Understanding Moisture Barrier Needs
Moisture protection is the most critical function of underlayment for concrete subfloors. Without proper moisture barriers, flooring can warp, buckle, and develop mold within months of installation.
Concrete Subfloor Rule: Always use underlayment with a built-in moisture barrier when installing over concrete. The additional cost prevents thousands in potential damage.
When You Need a Moisture Barrier
- Concrete subfloors: Always required, even on above-grade concrete
- Below-grade installations: Basements and walkout basements need maximum moisture protection
- Wet climates: High humidity areas require enhanced vapor barriers
- New construction: Concrete needs 60-90 days to cure; moisture barriers extend this protection
When You Might Skip It
- Wood subfloors above grade: Pier and beam foundations typically don’t require moisture barriers
- Second-story installations: Unless installing over radiant heating or unusual conditions
Soundproofing Underlayment: STC and IIC Ratings Explained
Understanding sound ratings helps you choose the right underlayment for your specific situation. These two measurements tell you different things about noise reduction.
STC (Sound Transmission Class): Measures airborne sound reduction like voices, TV audio, and music. Higher numbers mean better airborne sound blocking.
IIC (Impact Insulation Class): Measures impact sound reduction like footsteps, dropped objects, and pet movement. This is the critical rating for multi-unit buildings.
Minimum Sound Ratings by Building Type
| Building Type | Minimum IIC Required | Recommended IIC | Best Products |
|---|---|---|---|
| Single Family Home | None required | 50+ | Standard foam, 2-in-1 products |
| Condo/Townhome | 50-60 | 65+ | Bestlaminate 3in1 (IIC 65) |
| Multi-Unit Rental | 60+ | 70+ | Premium soundproofing products |
| Commercial Space | 50+ | 65+ | Commercial-grade underlayment |
How to Choose the Best Underlayment?
After hundreds of installations, I’ve developed a decision framework that helps homeowners choose the right underlayment without overthinking it. Follow these steps in order.
- Identify your flooring type: Laminate, LVP, engineered hardwood, and solid hardwood each have different underlayment requirements.
- Determine subfloor material: Concrete requires moisture barriers; wood subfloors may not.
- Assess soundproofing needs: Multi-unit buildings require specific IIC ratings; single-family homes have more flexibility.
- Measure your space: Calculate total square footage and add 10% for waste and seam overlaps.
- Set your budget: Underlayment typically costs $0.20-$0.50 per square foot depending on quality.
- Check flooring manufacturer requirements: Using unapproved underlayment can void your warranty.
Solving for Moisture Concerns: Look for Built-in Barriers
For concrete subfloors, moisture protection is non-negotiable. Look for products with integrated vapor barriers and overlapping seam designs. The FLOORLOT GoldMax and Bestlaminate 3in1 products excel in this category.
Solving for Sound Issues: Check IIC Ratings
If noise transmission is a concern, focus on IIC ratings rather than marketing claims. Products rated IIC 65 or higher meet most multi-unit building requirements. The Bestlaminate 3in1 Silent Padding specifically targets this need.
Installation Tips and Best Practices 2026
Proper installation ensures your underlayment performs as intended. I’ve learned these techniques through years of trial and error.
Pre-Installation Checklist
- Sweep and vacuum subfloor: Remove all debris that could puncture or create uneven spots
- Check subfloor flatness: Address significant dips or humps before installing
- Acclimate underlayment: Let rolls sit in the room for 24-48 hours before installation
- Gather tools: Utility knife, tape measure, staple gun (if required), and seam tape
Common Installation Mistakes to Avoid
Warning: Never install two layers of underlayment thinking it will double the protection. This creates instability, can cause flooring separation, and definitely voids warranties.
- Skipping seam taping: Unsealed seams become moisture entry points and create hollow sounds
- Incorrect overlap direction: Overlap should run perpendicular to the flooring direction when specified
- Stretching the material: Underlayment should lay flat; pulling it tight causes rebound issues
- Ignoring manufacturer instructions: Each product has specific installation requirements
Seam Taping Techniques
Proper seam taping is crucial for moisture barriers and sound performance. Use the manufacturer’s recommended tape and apply it smoothly without wrinkles or gaps.
For products with pre-attached tape like the Bestlaminate 3in1, simply remove the backing and press seams together firmly. The adhesive is specifically formulated for the underlayment material.
Frequently Asked Questions
What is the purpose of underlayment for flooring?
Flooring underlayment provides moisture protection, sound reduction, cushioning for comfort, and thermal insulation between the subfloor and finished flooring. It also smooths minor subfloor imperfections and can extend flooring warranty coverage.
Do I need underlayment for vinyl plank flooring?
Yes, LVP and LVT flooring require underlayment unless the product specifically includes attached backing. Underlayment provides sound reduction, moisture protection, and cushioning that improves the flooring’s performance and longevity.
What is the best underlayment for soundproofing?
The Bestlaminate 3in1 Silent Padding with IIC 65 rating and QuietWalk products offer the best sound reduction for residential applications. For multi-unit buildings with strict requirements, look for products rated IIC 70 or higher.
How thick should underlayment be for laminate flooring?
Laminate flooring typically requires 2-3mm thick underlayment. Thicker options up to 3mm provide better sound reduction and cushioning, but verify your flooring manufacturer’s recommendations as some products have thickness limits.
Can you put two layers of underlayment under flooring?
No, installing two layers of underlayment is never recommended. Double layers create instability, can cause flooring gaps and separation, and will void your flooring warranty. Choose a single quality product that meets all your needs.
Do you put underlayment under engineered hardwood?
Yes, engineered hardwood flooring installed as a floating floor requires underlayment. For nail-down installations, felt paper or roofing felt is typically used instead of foam underlayment. Cork underlayment is an excellent choice for floating engineered hardwood.
Final Recommendations
After reviewing hundreds of products and installing flooring across every imaginable condition, I can confidently say that investing in quality underlayment pays for itself in flooring longevity and daily comfort.
The FLOORLOT GoldMax remains my top recommendation for most installations due to its comprehensive protection and excellent value. For luxury vinyl projects, the QuietWalk LV line delivers consistent performance. If sound reduction is your priority, the Bestlaminate 3in1 with IIC 65 rating will satisfy most multi-unit building requirements.
Remember that underlayment is not the place to cut costs. The material costs about $0.30-$0.50 per square foot, while the flooring it protects costs $3-$8 per square foot. Protecting your investment with quality underlayment is simply smart economics.