When choosing underlayment for laminate floors, select products with a built-in moisture barrier that work well with floating installations. The top options below are designed to protect against subfloor moisture, reduce noise, and improve comfort. This guide highlights five underlayments suited for homes, apartments, and remodeling projects, with clear notes on who benefits most and where to avoid tradeoffs.
Summary of chosen products
| Product | Coverage | Thickness | Moisture Barrier |
|---|---|---|---|
| QuietWalk Underlayment 360 sq ft | 360 sq ft | 3 mm | Yes |
| ROBERTS 70-116 Moisture Barricade | 300 sq ft | 6 mil | Yes |
| Premium Floor Underlayment with Moisture Barrier – 200 sq ft | 200 sq ft | 3 mm | Yes |
| Floorlot GoldMax Premium Floor Underlayment | 200 sq ft | 3 mm | Yes |
| QuietWalk Underlayment 100 sq ft | 100 sq ft | 3 mm | Yes |
QuietWalk Underlayment 360 sq ft – 3 mm Thick
Brand: Quiet Walk. For use under laminate and hardwood floors, with an option approved for floors that have a pre-attached pad. Integrated moisture barrier protects against subfloor vapor. Best for larger rooms or open-plan spaces where a single roll minimizes seams.
Best for: Homeowners needing broad coverage and a compatible option for pre-attached pad laminates. Caution: Ensure compatibility with your specific underlayment requirements and subfloor conditions.
ROBERTS 70-116 Moisture Barricade
Brand: ROBERTS. 6 mil polyethylene film designed as a moisture barrier for vinyl, laminate, SPC, and engineered wood floors. Ideal when installing laminate over concrete slabs or with pre-attached underlayment. Helps meet moisture-control needs on challenging subfloors.
Best for: Projects needing a strong vapor barrier under floating floors; better for concrete slabs. Caution: A thicker barrier may affect roll handling and cutting on tight sites.
ROBERTS 70-115 Moisture Barricade Underlayment Film
Brand: ROBERTS. 6 mil thick, designed for vinyl, laminate, SPC, and engineered wood floors. 120 sq ft roll that unfolds to a 10 ft by 12 ft area. Suitable for smaller projects or controlled installations where roll size matters.
Best for: Small areas or quick replacements; better for minimizing waste on petite rooms. Caution: Smaller rolls may increase the number of seams in larger rooms.
AMERIQUE 800SQFT 4TH Generation Blue 2MM Underlayment
Brand: AMERIQUE. 2 mm thick 4th generation underlayment with 3-in-1 features, including tape and vapor barrier. Anti-crush technology provides durable performance for long-term use. Suitable for large projects with consistent layering.
Best for: Large-area installations seeking integrated features; better for crews prioritizing durability. Caution: Thinner core may provide less insulating effect than thicker options in very noisy environments.
Shop Square Premium Underlayment With Moisture Barrier
Brand: Shop Square. 200 sq ft roll, 3 mm thick with built-in moisture barrier and enhanced sound dampening for quiet spaces. Claims to block subfloor moisture without needing an extra vapor barrier. Best for mid-to-large rooms and HOA-compliant installations.
Best for: Those who want proven moisture protection with a single, simple installation. Caution: Coverage is mid-range; larger spaces may require multiple rolls and careful seaming.
Floorlot GoldMax Premium Underlayment
Brand: Floorlot. 200 sq ft roll, 3 mm thick with built-in moisture barrier. Designed to block subfloor moisture and improve floor stability. Suitable for laminate, engineered wood, and solid hardwood floor systems. Best for comprehensive moisture control in mid-sized projects.
Best for: Buyers needing a reliable, all-around underlayment with moisture protection. Caution: Specific compatibility with thin or ultra-thick laminate may require validation with the product’s installation guidelines.
Buying Guide: Key Considerations and Comparisons
What should I look for in a moisture barrier underlayment?
- Moisture barrier type and thickness: Thicker barriers often provide stronger vapor protection but may be stiffer to work with in tight spaces.
- Coverage and roll size: Choose a roll size that minimizes seams for your room dimensions.
- Compatibility: Verify that the underlayment is suitable for floating installations and pre-attached pads if required by your laminate.
- Acoustic performance: If noise is a concern, look for underlayments with sound-dampening features and IIC/STC ratings where applicable.
- Installation simplicity: Some models include tape or integrated vapor barriers to reduce extra steps during setup.
Which product is best for different buyers?
- Best for large rooms: QuietWalk Underlayment 360 sq ft offers broad coverage with integrated moisture protection, reducing seams across expansive areas.
- Best for concrete slabs: ROBERTS 70-116 Moisture Barricade provides a robust 6 mil barrier, ideal for slab-on-grade installations.
- Best for small to mid-sized rooms: Floorlot GoldMax or the Premium Shop Square underlayment provide reliable moisture blocking with manageable roll sizes.
- Best for budget-aware projects: QuietWalk 100 sq ft delivers the same moisture protection and fit-with-pre-attached-pad capability in a smaller package.
Frequently Asked Questions
- Q: Do I need a moisture barrier under laminate flooring?
- A: Yes, a moisture barrier helps protect subfloors from vapor, especially over concrete or damp subfloors, and can improve long-term stability.
- Q: Can I install laminate directly over an existing underlayment?
- A: Many laminates require a new underlayment with a moisture barrier to meet warranty and performance expectations; check your product’s guidelines.
- Q: Is 3 mm thickness enough for sound reduction?
- A: In many cases, 3 mm provides noticeable sound dampening, but thicker options or combined layers may offer better acoustic performance in busy spaces.
- Q: What’s the advantage of thicker moisture barriers?
- A: Thicker barriers typically offer greater resistance to subfloor moisture, which is valuable on damp or irregular substrates.
- Q: How important is roll size?
- A: Roll size affects seams and installation speed; larger rooms benefit from bigger rolls to minimize joints.