You May Also Need Standard RoofBoot™ Closure-Foam™ Mastix™ Butyl Tape This versatile, trimmable end lap sealing tape joins metal to metal, and seals around windows, doors, roof vents, stacks, access doors and other penetration points. X-Seal™ Expandable Foam Tape X-Seal expands to fill any shaped gap in the construction of metal buildings, doors and windows, concrete, wood and more. It is adaptable to most roof panels, including hips and valleys. Marco’s Weather-Tite™ Metal Roof Sealant Formulated to outperform other sealant technologies, including silicones, tri-polymers and polyurethanes, it provides a waterproof seal against water, wind, dust, dirt or other filtrations. Resources Dig deep with technical tools, reference charts, installation videos and more. Choosing The Right Fastener Roofing And Ventilation Terms Technical Tools News Keep up to date with the latest news and info from Marco and around the industry.