Recent Carpark Work Projects

The test on a carpark ceiling is what it looks like from the deck below when it is finished. Look up and you should see one continuous surface — you should not be able to see where the liner was cut around a duct, or where two sheets met at a services penetration.

Carpark soffit is unforgiving because it is a finished surface in a space nobody thinks of as finished. Every penetration, every duct, every pipe has to be cut around cleanly. There is no ceiling grid to hide behind.

Doing that once is a craft problem. Doing it at nine buildings' worth of scale, on programme, while the design is still moving, is a resourcing problem. They are different problems and they need different answers.

Mixed-system jobs go wrong when the crew treats the two products as interchangeable. They are not. The fixing schedules differ, the edge distances differ, and rigid board has to be taped at joints and exposed edges where a fibrous panel does not.

A retirement village carpark also sits directly under occupied units, so the acoustic performance of the ceiling matters as much as the thermal. That is a reason to be careful about substitutions — the absorption figure changes with thickness and facing, and an equivalent R-value is not an equivalent acoustic result.

Delivered to programme and signed off without rework.

Almost all carpark soffit work is overhead off elevated work platforms, and on a large deck the machine time becomes the programme. Floor condition governs everything — an EWP needs clean, level, load-bearing floor with no unfilled penetrations and nothing stacked on it. Where a carpark is still being used as materials laydown, more time goes into relocating the machine than installing.

Working overhead off a platform also means an exclusion zone below, so the bay cannot be shared. On a job of this size, whether we and another trade were programmed into the same bay on the same day was the single biggest determinant of how a week went.