TPO
The membrane is TPO. There are tens of thousands of commercial buildings out there with TPO roofs that do not receive even a yearly or bi-annual wash. Lots of posts here discussing roof maintenance. I have come down on the “wash a time or two per year” and that’s it.
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MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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