Gaps between doors and frames can cause draughts and let air, regardless of season, escape. Fixing this can be easy. You can check the following:Adjust the hinges - If your door moves upward if you lift your doorknob, the hinges may need some tightening with a screwdriver.Take note of measurements - List the measurement of the gap from the door and the door jamb, and the width and height of the door. This lets you know how thick you need your weather stripping to be.Mark before cutting the stripping material - Once you have your measurements listed, mark the stripping before you cut it for accuracy. Don’t forget to angle the cut where the corners of the stripping meet.