My Bedroom Door Stuck Every June — Until I Found the Real Culprit

Why Wood Moves

Wood isn’t stable. It never has been.

Even after it’s milled, finished, and hung in your doorframe, it’s still reacting to the air around it. When humidity climbs in summer, wood fibers absorb moisture and swell. When dry winter air returns, they release that moisture and shrink back down.

This is why my door closed perfectly in September and jammed every June.

Most doors are sealed on all six sides — front, back, top, bottom, and both edges. That finish coat acts like a raincoat, slowing down how much moisture the wood can absorb.

When one side is left bare, the wood pulls in humidity unevenly. It swells more on that unprotected edge.

I suspected that’s what had happened here — that whoever hung the door fifteen years ago had skipped a step, and I’d been paying for it every summer since.

But I needed to know where the door was actually binding before I’d know for sure.