"I expected to get funding for what I would call fundamental failures... the failure of that cladding was fundamental. We never got that sort of funding," he told Radio NZ.
"Clinical priorities took precedence. At the time they were between a rock and a hard place - they still are."
It was not until 2012, when a large cladding panel fell off the Scott Building, that a more comprehensive report was ordered.
The DHB's acting chief executive, Dr Gloria Johnson, said she was not aware of the 2010 report, by Dalton surveyors, when she said in March that officials were first alerted to the weathertightness problems in 2012.
The Government recently signed off on an additional $11.5 million for repairs to the Scott Building, taking the total for the project to $27.5m.