Once the water has stopped, smooth the silicone flush. Apply a generous amount of silicone to the joint, using the nozzle to insert it directly into the drip. Once the water has stopped, smooth the silicone flush with the surface. In case of cracks and holes, first seal the inner area, wait for the sealant to dry, and then seal the outer part.
You'll still need to smooth out the sealant and check if the hole is repaired once it's dried, pouring water down the gutter or pipe. Weatherproof adhesive tape is also sometimes a good option for gutter cracks. However, you may find it more difficult to seal the area properly compared to using sealant. Generally speaking, the interior area of the gutter must first be cleaned to ensure that there is no mold or moss attached to the surface of the gutter.
I suggest using Selley's Grey Storm 290 ml waterproof sealer for gutters and roofs to glue the mini sheet to the surface of the gutter.
