Wood doors do require a bit of care and maintenance to keep them looking and performing at their peak. For instance, they should be sealed before or immediately following installation. If you do not complete this crucial step, they may absorb moisture, which could cause them to warp or swell over time. You’ll need to reseal every couple of years. In the same manner, you may need to touch up stain or paint every few years, too, as they may chip with normal wear and tear over time.
One other thing to note is that wood doors — because of their heavy material — may sag over time. Again, this can be fixed with routine maintenance or updates to your hardware and frame.