I noticed the following mold in a corner of my garage. Where is it coming from, air flowing around the door or hinge? Could the garage door (right), contribute to this? How does one stop this from happening? At this time, my plan is to cut out the sections that have mold and replace them with mold resistant drywall that I have on hand. [![mold in corner of garage][1]][1] # Update 1 # Here is a pic of the outside. [![outside of garage][2]][2] I'm on the East coast in Canada (ie. Maritimes). This issue has appeared a while back, just getting to it now. It doesn't seem to have expanded. We use the garage a few times a day as the car is always parked in it. The ride-on lawn mower and snow blower are typically parked near the corner for easy usage which might bring in excess moisture to the corner? [1]: https://i.sstatic.net/SsHOw.jpg [2]: https://i.sstatic.net/k2zHn.jpg