Yes, laminate absolutely needs a moisture barrier when installed over concrete.
Concrete is naturally porous and constantly releases moisture vapor, even if it looks dry. This invisible moisture can rise into your flooring and cause swelling, warping, and mold.

Why Moisture Barriers Are Essential for Laminate Floors:

• Prevent Swelling & Warping
  Laminate is made from fiberboard layers that absorb moisture easily. Even small amounts of vapor from the concrete can distort planks over time.
• Protect Against Mold & Mildew
  Moisture trapped beneath laminate is an ideal environment for mold and mildew. This can lead to bad smells, reduced indoor air quality, health issues, and damaged flooring.
• Maintain Manufacturer Warranty
  Most flooring manufacturers require a moisture barrier when installing over concrete. Skipping it can void your warranty.

Summary

Moisture protection isn’t optional, it’s necessary when installing laminate over concrete. Without it, trapped moisture can lead to warping, mold, and expensive repairs.

SUPERSEAL Subfloor Pro goes beyond basic underlays. Its dual air-gap system provides airflow above and below the membrane, which allows your floor to breathe and dry naturally. This helps prevent moisture buildup before it becomes a problem.

SUPERSEAL Subfloor Pro is unmatched on the market today. It's specifically designed to protect your floors, your home, and give you peace of mind