Forum Discussion
Steve495169
Feb 14, 2024Explorer II
My husband covered our RV roof (540 sq ft) with white Flex Seal used about 4 gallons. It has held up great in the HOT Arizona sun for over 6 years and is still fine. You need to divide the roof into 4 sections, mark them off and use 1 gallon per section. With our roof it is 9 linear feet per section. This stuff is wonderful...but be sure what you are coating is clean. With an RV take a hose to clean the roof off the day before so it dries well overnight.
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