How Long Does Flooring Need to Acclimate Before Installation?
New flooring can transform a home, but the work starts before the first plank goes down. Many types of flooring need time to adjust to the home's conditions. This process is called flooring acclimation.
Acclimation means letting flooring materials sit in the space where they will be installed. During this time, the material adjusts to the room's temperature and humidity. This helps it stay stable after installation.
Wood and some other flooring materials naturally expand and contract. When they absorb moisture from the air, they swell. When the air is dry, they shrink.
Flooring is often stored in warehouses, trucks, or garages before delivery. These spaces may be much warmer, cooler, drier, or more humid than a finished home. Installing flooring straight from these conditions can lead to problems later.
Skipping acclimation can cause floors to gap, cup, or buckle as the material adjusts after installation.
Gaps form when boards shrink after being installed in a swollen state. Cupping happens when the edges of boards rise higher than the centers, often due to moisture. Buckling is a more severe problem where boards lift away from the subfloor.
How long flooring needs to acclimate depends mostly on the type of material. Solid hardwood usually requires the most time. Many manufacturers suggest at least three to five days, though some installations take longer.
The most accurate approach for hardwood is not counting days but measuring moisture. Installers use a moisture meter to check both the flooring and the subfloor. Many manufacturers specify how close these readings should be before installation can begin.
Engineered hardwood is more stable than solid wood because of its layered construction. It often needs less acclimation time, sometimes around 24 to 72 hours. Some engineered products require no acclimation at all, depending on the manufacturer.
Laminate flooring typically needs about 48 hours to acclimate. Laminate has a fiberboard core that can react to humidity. Allowing time for adjustment helps reduce the risk of gaps or peaking at the seams.
Vinyl flooring varies widely. Some luxury vinyl plank products, especially flexible ones, recommend around 24 to 48 hours of acclimation. Many rigid core products, such as stone plastic composite, are designed to need little or no acclimation.
Because of these differences, the manufacturer's instructions are the most important guide. Flooring warranties often depend on following those instructions. Skipping a required step may void the warranty if problems appear later.
The room must be ready before acclimation begins. The home's heating or air conditioning should be running at normal living conditions. Many manufacturers recommend indoor temperatures between about 60 and 80 degrees Fahrenheit.
Humidity is equally important. For wood flooring, indoor relative humidity is often recommended to stay between about 30 and 50 percent, though ranges vary by product and region. A hygrometer can measure indoor humidity easily.
Acclimating flooring in a room that is not finished can defeat the purpose. If drywall is still drying, paint is fresh, or windows are not installed, moisture levels may be unstable. Flooring should acclimate only after these projects are complete.
The flooring should be placed in the same room where it will be installed. Leaving it in a garage, basement, or porch does not help it adjust to living conditions. It should also be kept off concrete floors that may hold moisture.
How the boxes are arranged can also matter. Some manufacturers recommend opening the boxes or spreading out the planks to allow airflow. Others say to keep boxes sealed and lay them flat.
Stacking boxes with space between them can help air circulate. Placing them away from exterior walls, heating vents, and direct sunlight promotes even acclimation. Following the specific instructions avoids accidental damage.
The subfloor plays a large role in flooring success. Even well-acclimated flooring can fail if the subfloor is too wet. Concrete slabs may require moisture testing and a vapor barrier before installation.
Seasonal changes are another factor. Wood floors installed during a humid summer may shrink in dry winter months. Maintaining steady indoor humidity year-round helps keep floors stable long after installation.
A professional flooring installer understands how different products react to local climate conditions. They can measure moisture, check the subfloor, and follow manufacturer guidelines closely. Taking the time to acclimate flooring properly helps protect the investment and keeps floors looking good for years.