|Indoor or outdoor sealing of low, medium and high pressure HVAC duct systems. Seal cracks and seams in gutters, roof valleys, eaves, hips and ridges. Seal around chimneys and vent stacks. Seal rooftop duct systems.Seal leaks in vans, cars and trucks. Repair gouges, rips, tears in metal panels of trailers, shipping containers and metal buildings. Mobile home repair.