A non-compliant box gutter overflow
The safeguard that was not able to work.
In short: A box gutter blockage has nowhere benign to go if the overflow cannot discharge.
Box gutters explained
A gutter set within the roof rather than at its edge, carrying water in a concealed position.
Why the overflow exists
So a blockage discharges visibly rather than backing up into the ceiling.
What we found
A high capacity overflow that was non-compliant and not able to perform.
What that means in practice
The first sign of a blockage becomes water through the ceiling.
What to check
Where your overflow discharges, and whether the gutter is clear.
Written by the Owner Inspections team from inspections carried out in Rockbank. Licensed building practitioners, Building & Plumbing Commission registration CDB-U 53425.
