How Do I Stop My Doors From Sticking in Summer?

Wood absorbs moisture from humid air, causing it to expand. In summer, higher humidity levels make door frames and doors swell, so the door no longer fits its opening. The result is a door that scrapes against the jamb or the floor.

Sometimes the issue is not just seasonal humidity. A slow leak inside a wall or under a floor can keep the wood damp year-round. If a door sticks in the same spot every summer, it is worth checking for hidden moisture.

Persistent sticking can signal a water leak behind the wall or under the floor. Look for discoloration, soft spots, or a musty smell near the door frame. You can also use a moisture meter if you have one.

If you suspect a leak, a water damage inspection can help pinpoint the source. The pros use moisture mapping and leak detection to find hidden problems without tearing open walls. Addressing the leak early prevents more damage.

Keep indoor humidity below 50 percent during humid months. Use exhaust fans in bathrooms and kitchens, and make sure your home has good ventilation. In a mild coastal climate with wet winters and dry summers, you might notice more sticking in summer.

Also check your door hinges and screws. A loose hinge can cause a door to sag and stick, even without humidity. Tighten screws and replace any that are stripped. Regular maintenance helps doors stay smooth year-round. If you live in an area with high seasonal humidity, consider using a whole-house dehumidifier during the warm months. Keeping moisture levels consistent reduces the chance of wood swelling and sticking.