The answer to 'how to repair flashing repair' is to properly inspect, clean, and reseal the flashing around your roof. Flashing is the metal or plastic material used to seal the joints and gaps around chimneys, vents, and other roof penetrations. Over time, flashing can become damaged, cracked, or loose, allowing water to leak into your home.
To repair flashing, first inspect it closely to identify any issues. Look for cracks, holes, or areas where the flashing has pulled away from the roof or penetration. Clean the area thoroughly with a wire brush or sandpaper to remove any rust or debris. Then, apply a high-quality roofing sealant or caulk to seal any gaps or cracks. If the flashing is severely damaged, it may need to be completely replaced.