newts
Veteran
- Location
- Isca Dumnoniorum
Plasterboard is not a suitable substrate for tiling in wet areas like a shower enclosure(m/resistant is only marginally better). As you quite rightly suggest a tile backer board for wet areas is best, tanking coat over plasterboard a lowly second. Over 30 years I have replaced many bathrooms for customers with plasterboard failure being the root cause. Nowadays I regularly inspect new builds & plasterboard (now moisture resistant) is still the element that fails.My joiner has said that he was called back to a renovation he did last year. The plumber found a leak on push fit connections going into the underfloor heating system( the expansion and contraction of the slab weakened the fitting. This wasn't part of the original works-so no blaming the plumber. He has said the water has damaged lots of the renovation work.
Estimated £12K to remove new bathroom, re-tile, replace stud walling bases plate(black mould) plasterboards-water has wicked up the boards, and re instate all fittings. I personally would never use plasterboard or green moisture resistant board in future. Either something like Knauf Aquapanel or Abacus Elements board. Totally water proof