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Home > FAQs > Can COOWIN composite decking be installed over an existing substructure, e.g., framing or joists?

Can COOWIN composite decking be installed over an existing substructure, e.g., framing or joists?

November 30, 2021

Yes, as long as the existing substructure is free of damage or decay, and the joists are spaced in accordance with COOWIN Decking Installation Instructions, to ensure good ventilation and drainage.