Can you tile over osb subfloor?

Yes, you can tile over an OSB (oriented strand board) subfloor, but it’s important to ensure that the OSB is in good condition, properly installed, and adequately supported. It is recommended to use a cement backer board or an uncoupling membrane over the OSB to provide a more stable and moisture-resistant surface for the tile. Additionally, proper sealing and underlayment can help prevent issues like expansion or movement that may affect the tile installation. Always follow manufacturer guidelines for the specific tile and adhesive being used.