What should be applied to crevices in wood flooring?

Applying a filling compound to crevices in wood flooring is a standard practice designed to enhance the appearance and longevity of the flooring. The filling compound is specifically formulated to fill gaps, cracks, and crevices. This helps to eliminate potential areas for moisture accumulation, reduces the risk of dirt and debris settling into these spaces, and provides a smoother, more finished appearance.

While other options like sealers, glue, or varnishes serve important functions in wood flooring maintenance or installation, they are not intended to fill crevices. A sealer primarily protects the wood from moisture and damage but does not provide the necessary filling action. Glue is typically used in the adhesive process to bond boards together rather than to fill gaps. Varnish serves as a protective topcoat, enhancing the wood's finish and durability but is not designed to fill in crevices. Therefore, the filling compound is the most suitable choice for addressing spaces in wood flooring.