Metal buildings and structures with seam fastened metal roofs are almost always good candidates for a restoration system in the form of a liquid elastomeric coating. Most often, the approach here is to create a "three-course" reinforced flashing at the transitions such as panel ends and ridge caps, vents, skylights or any other roof curb by applying a bed of elastomeric or neoprene – polyester felt – and then another layer of elastomeric or neoprene on top of the reinforcement. Once the all of the detail work (described above) has been performed, the entire roof is then two-coated with the liquid elastomeric using a combination of spray equipment and squeegees.
Roof Coating -Detailing Individual cases will vary based on existing conditions, but on average these systems can be issued a renewable 10 year warranty, meaning that with proper care and maintenance, (i.e. another top coat of elastomeric applied at year 8 for example) your warranty can be extended for up to another 10 years.
In the case of a metal panel roof, the cost of a reinforced liquid applied system can be up to 40% less than the traditional roofing approach of installing flute fillers, coverboard insulation, and then a waterproofing / roofing membrane.