Do i need to treat these walls before applying tile backing board? Bit crumbly in places : r/Plastering

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holes in plasterboard after removing tiles best way to fix new plasterboard so it can be re tiled? details in OP : r/DIYUK

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Does this shower wall need additional water proofing? : r/Renovations

No backing/whole in drywall. Any idea how to patch this? : r/HomeMaintenance

Presto Patch Ready-Mixed Multi-Purpose Patching Compound

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