Should flooring sit before installing?
Should Flooring Acclimate Before Installation, Particularly for Staircases?
Yes, in most cases, flooring should acclimate to the environment where it will be installed before installation begins. This is especially important for hardwood flooring, which is susceptible to expansion and contraction due to changes in temperature and humidity. Acclimation allows the wood to adjust to the moisture content of its new surroundings, minimizing the risk of warping, buckling, or gapping after installation.
Acclimation: The Pre-Installation Adjustment Period
Acclimation is the process of allowing flooring materials, particularly wood, to adjust to the temperature and humidity levels of the room where they will be installed. It is a crucial step in ensuring a successful and long-lasting flooring installation.
Why is Acclimation Important, Especially for Staircases?
- Dimensional Stability:
- Wood is hygroscopic, meaning it absorbs and releases moisture in response to changes in its environment.
- If wood flooring is installed without acclimating, it might expand or contract significantly after installation, leading to problems like:
- Buckling: The floorboards push against each other, causing them to bend upwards.
- Gapping: Gaps appear between the floorboards as they shrink.
- Cupping: The edges of the floorboards become higher than the center, creating a concave shape.
- Crowning: The center of the floorboards becomes higher than the edges, creating a convex shape.
- On staircases, these problems can be particularly problematic, leading to uneven treads, tripping hazards, and an unsightly appearance.
- Adhesive Performance:
- Many types of flooring, including hardwood, are installed using adhesives.
- If the wood’s moisture content changes significantly after installation, it can affect the adhesive bond, potentially causing the flooring to loosen or detach.
Acclimation Guidelines for Staircases
- Manufacturer’s Recommendations: Always follow the manufacturer’s specific acclimation instructions for the flooring you are installing. These instructions will typically include:
- The recommended acclimation period (usually several days to a week).
- The ideal temperature and humidity range for the room.
- How to store the flooring during acclimation (e.g., cross-stacked and spaced to allow air circulation).
- Staircase-Specific Considerations:
- Staircases are often located in areas with varying temperature and humidity levels, such as near entryways or in basements. Pay close attention to the conditions in these areas when acclimating your flooring.
- If you are replacing existing flooring on a staircase, ensure that the subfloor is dry and properly prepared before bringing in the new flooring for acclimation.
Building Codes and Acclimation
- While building codes don’t typically explicitly mandate acclimation, they do set standards for the moisture content of wood flooring at the time of installation.
- Failure to acclimate properly could result in a flooring installation that doesn’t meet code requirements.
Conclusion
Acclimating flooring before installation is a crucial step in ensuring a successful and long-lasting result, especially for staircases. By allowing the flooring to adjust to its new environment, you minimize the risk of dimensional instability and adhesive failure, ensuring a beautiful and functional staircase for years to come.