
I had a crack around an antenna that kept breaking open with just the lap sealant. I pealed the lap sealant back and pushed this deep into the crack and then recovered with lap sealant. Seems to have solved the problem. Will know more next spring.

XFasten Super Strong Duct Tape, White, 2" X 50 Yards Waterproof Duct Tape For Outdoor, Indoor, School And Industrial Use
33 Review

Gorilla Tough And Wide Silver Duct Tape, 2.88" X 25Yd - Pack Of 1 For Superior Strength And Durability
23 Review

TapePlus Gaffer Tape - Large 2 Inch X 40 Yards Roll - Versatile Black Tape For Gaffers, Ducts, Floors, And More
31 Review

High Tensile Strength Duct Tape Silver, 5.8mils, 2 Inches x 50 Yards - All-Weather Duct Repair Tape for Commercial Use, Heavy-Duty Repair, Packing with Temperature and Shear Stress Resistance - XFasten
39 Review