The thresholds are sometimes imperceptible. Not all doors have them and those that don’t always stand out. However, thresholds can be a good addition to an entrance, especially if the floor on both sides is clearly different from the neighbor and you need a separation barrier rather than abruptly meeting each other.

They can also be good at stopping drafts or preventing air, whether hot or cold, from escaping or entering.

But what kind of maintenance do interior thresholds need?

There are several things to consider, such as staining, sealing with urethane, or painting. Each one is a possibility, but the final decision is up to you. The truth is that a threshold needs some type of coating to protect it from getting dirty, scarred or damaged.

If you have hardwood floors, it could stain the threshold:

1. Lightly sand the sill, leveling all sides.

2. Prepare the stain.

3. If you want to match the color of the hardwood floor, apply the stain slowly in layers.

4. Once finished, apply a sealer in several coats for additional protection.

If you want to paint the threshold:

1. Lightly sand the sill, leveling all sides.

2. Prepare the paint. It should be oil-based for the best shine and longest wear.

3. Apply at least two coats, allowing them to dry between them.

4. Once finished, apply a sealer in several coats for additional protection.

If you like the color of the threshold wood, you can leave it in its natural state. In that case, you still need to apply a varnish to protect it from foot traffic.

1. Lightly sand the sill, leveling all sides.

2. Prepare oil-based varnish.

3. Apply at least two coats, allowing them to dry between them.

Finally, add a little caulk around the edges of the sill to prevent dirt from being trapped in the open spaces. After all, the threshold will be crossed by many feet with all kinds of debris that can linger if given the opportunity.