I have a TPO roof on my Rockwood. For self-levelling I use Alpha Systems sealant for TPO but Dicor has a TPO sealant, too. For the vertical sides, I use ProFlexRV. If you have a rip in the TPO get some Eternabond tape. There are lots of threads here discussing Eternabond.
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2023 Rockwood Signature 8262RBS
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed
2019 Rockwood Signature 8290BS (2019 - 2022)
2011 Rockwood Signature 8293SS (2015 - 2018)
2010 Rockwood Roo 23SS (2012 - 2014)
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