Drafty Sliding Glass Door Fixes in Maryland Winters
What Makes A Sliding Glass Door Feel Drafty In Winter A sliding glass door that feels fine in October can turn into a cold spot by January. That usually means the problem is not one single thing, but a mix of worn parts, shifting framing, and age. The most common culprit is usually the weatherstripping, especially on older sliders where the soft seal has flattened or torn. Once that material compresses or breaks down, outside air moves right through the meeting edges.