Flooring materials like hardwood, laminate, and vinyl aren't ready to install straight from the warehouse—they need time to adjust to your home's temperature and humidity. Skip acclimation, and you'll likely face buckling, cupping, or gaps within weeks. Understanding why and how to do it right saves thousands in callbacks and keeps your new floor looking pristine.
What Is Flooring Acclimation?
Acclimation is the process of letting flooring materials sit in your home before installation so they can adjust to the local climate. Wood and engineered wood expand and contract based on moisture levels in the air; if you install them without letting them stabilize first, they'll shift and move once they're locked in place. The same applies to laminate and some vinyl products. Your installer should insist on this step—it's not laziness, it's essential.
Why Your Home's Environment Matters
Every space has a specific humidity level and temperature. A home in Florida with 60% humidity is fundamentally different from one in Denver with 25% humidity. When flooring arrives from a warehouse or factory, it's been in a different environment. Placing it directly on your subfloor without adjustment means the material will continue absorbing or releasing moisture after installation, causing visible damage.
Common problems from skipping acclimation include:
- Cupping: Wood edges curl upward, creating a dish-like appearance
- Buckling: Planks actually lift off the subfloor in severe cases
- Gapping: Visible spaces appear between boards as they shrink
- Crowning: The reverse of cupping—the center of the plank becomes higher than the edges
All of these are expensive to repair and often require removal and reinstallation.
How Long Does Acclimation Take?
Most solid hardwood and engineered wood need 3–7 days minimum, though some manufacturers recommend up to 14 days depending on the wood species and your climate. Laminate typically requires 24–48 hours, while luxury vinyl plank (LVP) often needs just 24 hours but benefits from longer periods in extreme climates. Check your specific product's documentation—reputable manufacturers include acclimation guidelines on every box.
The timeline isn't arbitrary. It represents the time needed for the material's moisture content to reach equilibrium with your home.
How to Properly Acclimate Flooring
Timing: Schedule delivery at least a week before your installation date, longer if you live somewhere with notably high or low humidity.
Placement: Open all boxes and spread planks throughout the room where they'll be installed (or in a connected area). Don't stack them neatly—air needs to circulate around all sides of the material.
Climate control: Keep your home at a stable temperature and humidity level during acclimation and for at least a month after installation. Many manufacturers specify a range—typically between 60–80°F and 35–55% relative humidity. If you don't have a humidity meter, buy a basic one for $15–30 at any hardware store.
Avoid moisture: Don't expose the flooring to direct sunlight, moisture, or extreme temperature swings. Close exterior doors, avoid running water in adjacent bathrooms, and skip the humidifier during acclimation.
When Contractors Skip This Step
Some installers push back on acclimation to speed up jobs and tighter scheduling. A reputable flooring contractor—the kind you'll find when comparing providers through Mercoly—understands that skipping this step creates warranty issues and unhappy customers. Red flag: if someone tells you acclimation isn't necessary, reconsider hiring them. Most quality flooring comes with warranties that explicitly void coverage if materials weren't acclimated properly.
Cost and Planning Implications
Acclimation adds time but virtually no cost to your project beyond scheduling flexibility. The real cost comes from not doing it: repair or replacement can run $2–10 per square foot depending on severity. For a 400-square-foot room, that's potentially $800–4,000 in damage.
Build acclimation time into your timeline when requesting estimates. A responsible contractor will account for it automatically.
Frequently Asked Questions
Q: Can I acclimate flooring in an unheated garage or storage space? No—acclimation must happen in the space where it'll be installed so the material adjusts to that exact environment. Temperature and humidity fluctuate too much in garages or storage areas.
Q: What if my home humidity is outside the manufacturer's recommended range? Use a humidifier or dehumidifier to bring levels into the correct range before delivery, then maintain it throughout acclimation and installation. This is especially important in very dry or very humid climates.
Q: Does engineered wood acclimate the same way as solid hardwood? Engineered wood generally requires less time—often 24–48 hours—because of its plywood base, but always check the manufacturer's specs since products vary.
Ready to install flooring the right way? Find trusted contractors in your area who prioritize proper acclimation.