Coating your RV roof with Dicor's Metal Roof Coating System

Dicor's Metal Roofing system cleans and protects your metal roof in three easy steps. The Metal Roof Rust Inhibitive Primer halts the rusting process and creates a barrier to prevent rust from bleeding though. Dicor's Coating Ready Cover Tape is a fleeced backed sealing tape for use on metal RV roof seams prior to coating. Sealing is immediate and cures completely in 24 hours. This must be followed with Dicor's Elastomeric Metal Roof Coating. This coating protects and beautifies metal aluminum and steel RV roofs. The Elastomeric resins edxpand and contract with the roof movement.
(Not for use on EPDM Rubber, TPO Rubber or Fiberglass roofing.)

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What are the advantages / disadvantages of a metal roof like this one versus a rubber or TPO roof? How often do you need to do this roof coating job if you have a metal roof? Thanks for the informative demonstration!

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I just wanted to make the first comment