Leveling the Subfloor for Optimal Moisture Control

Moisture is the nemesis of hardwood floors, causing them to buckle, cup, and warp. To prevent these problems, it’s imperative to level the subfloor and regulate moisture levels. An acceptable moisture reading in a hardwood floor is below 12%. Here’s how to achieve optimal moisture control:

Leveling the Subfloor

A level subfloor ensures even weight distribution and prevents moisture from pooling in uneven areas. Leveling can be achieved through:

• Self-Leveling Compounds: These liquid compounds self-level to create a smooth, even surface.
• Floor Levelers: Cementitious mixtures that are spread over uneven subfloors, creating a level base.
• Shims and Wedges: Used to raise low areas in a subfloor, creating a level surface.

Moisture Control

Once the subfloor is leveled, it’s time to control moisture:

• Vapor Barriers: Sheets of plastic or foil placed under the subfloor to prevent moisture from rising from the ground.
• Moisture Barriers: Similar to vapor barriers but installed on top of the subfloor to protect it from moisture from the hardwood flooring.
• Dehumidifiers: Devices that remove excess moisture from the air, reducing the risk of swelling and warping.

Acceptable Moisture Reading

Before installing hardwood flooring, it’s crucial to ensure the subfloor moisture reading is below 12%. This reading indicates that the subfloor is dry enough to support hardwood flooring without causing moisture-related issues.

By leveling the subfloor and implementing proper moisture control measures, you can create a moisture-stable environment that ensures the longevity and beauty of your hardwood flooring.