What should be done after cleaning the subflooring when installing an oak floor?

After cleaning the subflooring, it’s essential to install a moisture barrier, which in this case is 15 lb felt paper. This step is crucial because it helps to protect the hardwood flooring from moisture that can be present in the subfloor. Moisture can lead to hardwood warping, buckling, or developing mold and mildew.

Installing the felt paper with overlaps ensures that there are no gaps where moisture can seep through. It acts as a barrier, creating a more stable environment for the oak flooring and helping to prolong its lifespan. Each layer contributes to the overall integrity of the floor, providing both cushioning and moisture protection.

The other options do not serve the same purpose as the felt paper. Installing hardwood planks directly on a cleaned subfloor without a moisture barrier can lead to issues down the line. Carpet padding is not appropriate for a hardwood flooring installation as it is meant for a different type of flooring system. Lastly, while plywood sheets could be used in certain circumstances, they are typically not necessary if the subfloor is already in good condition, and they do not provide the moisture protection that felt paper does.