Shower tray junctions that leak
When wall tiles stop short of the tray upturn, water finds the gap.
In short: A preformed shower tray is only as good as the junction with the wall tiles.
The finding
Wall tiles did not extend over the tray upturn, leaving the junction relying on sealant that had perished.
The damage
Floor finishes beside the shower were swollen and deformed, consistent with long-term moisture.
Why it happens
The tray and the tiling are often done by different trades without anyone checking the junction.
What the report covers
Where water is entering, the extent of damage visible, and what AS 3740 requires.
Written by our local inspection team from work carried out in Sunbury. Licensed building practitioners, Building & Plumbing Commission registration CDB-U 53425.


