Liquid Roof is the best Repairing product

This rubber coating is maintenance free and installs in one easy coat with no primer. You can be on the road again in no time with no spring leaks.
Source: https://www.epdmcoatings.com/blogs/2012/01/liquid-roof-is-the-best-repairing-product-for-rv-roof/

Summer is considered to be the appropriate season for this repair projects because of the sunny days and low showers & snow.

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Liquid Roof Application is best with a squeegee and a fine nap roller. Before applying, mix the pre-measured catalyst by following label directions.
Source: https://www.epdmcoatings.com/blogs/2012/01/liquid-roof-application/

The types of elastomeric coatings and uses of them are numerous. Here you can learn a little bit about each type and the purposes for which they are most often used.

Catalyst must be added prior to use. Scrape sides of container with a rubber spatula to ensure catalyst distribution.
Source: https://www.epdmcoatings.com/blogs/2012/12/liquid-epdm-coatings-are-aftermarket-roof-sealants/

A complete history of roofing materials would start in the Stone Age. Popular modern material has not been around quite that lonEPDM Coatingsg but even clay roof tiles have been in use for thousands of years.