Do I need to tank shower walls before tiling?

We're fitting a new shower enclosure and our tiler has mentioned tanking the walls first. Is this always necessary?

Asked by Julie on 30th Apr 2026
Expert Trade Answers
"Yes, it is better to waterproof the shower walls before tiling, especially in wet areas like bathrooms. It helps protect the walls from moisture and prevents future damage."
Answered on 30th Apr 2026 - Member since Apr 2026 - report
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