I love this gutter sealant spray! It is a rubber coating spray that you can apply to the inside of your gutters to seal up any cracks that water may be leaking out of. To check for leaks, examine all the corner seams of your gutters. Water dripping from the seam underneath the gutter indicates a leak. I typically apply three coats to the inside of all the corners. Spray one coat and let it dry completely before applying the next coat. Get your gutters cleaned and use the spray to ensure proper drainage on your property.