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Weatherproof Patching Compound White Exterior Heavy Duty , Waterproof , Spackling 32 Ounce(s)

DAP Weatherproof Patching Compound White Exterior Heavy Duty , Waterproof , Spackling 32 Ounce(s)

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Can this be used to seal joints between OSB subfloor? Then be primed for pouring self leveling compound? Metal lath will be used on OSB before pouring


Thank you for posting your inquiry. DAP Platinum Patch is designed for use on minor cosmetic repairs, on fiber cement siding/trim and similar composite/engineered materials. It is not a sealant and would not be appropriate for the application as described. Should you have additional questions or require further assistance, please feel free to contact DAP Technical Customer Service at 888-327-8477.

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