More than 40 Queensland buildings are being investigated for potentially deadly flammable cladding. 

Housing and Public Works Minister Mick de Brenni said there were 44 buildings identified for assessment by a new taskforce to discover if combustible cladding was used.

"Twenty-three of those are government-owned buildings and 21 of them are privately-owned," he said.

It comes after London's deadly Grenfell Tower fire, which killed at least 80 people.

Mr de Brenni said he expected to clear more buildings off the list in the coming days.

"But there is no risk to safety at any of these premises that have been identified," he said during budget estimates on Thursday.

A Queensland audit taskforce was created to identify and inspect buildings built between 1994 and 2004. 

In June, it was revealed the Princess Alexandra Hospital could be insulated with potentially dangerous non-fire-retardant cladding.

Mr de Brenni said the PA Hospital was the only Queensland building that was officially identified as having flammable cladding in its structure.

The taskforce received results from PA Hospital cladding tested at a University of Queensland laboratory this month, which indicated the product was combustible.

About 80 square metres of cladding was then sent to a specialist facility in Victoria for further testing.

"The decision in terms of how the government will respond to the facade testing will be guided by expert fire engineers and building experts," he said.

Mr de Brenni said the hospital's staff, visitors and patients were safe. 

There is 24,000 square metres of building cladding on the Princess Alexandra Hospital.

Mr de Brenni said the government was investigating all health facilities in Queensland to ensure they were safe. 

"But it's important to assure all of the community that in no other case, no other case, has there been identified flammable cladding on any of those buildings," he said.

Mr de Brenni said the use of the cladding was not as widespread as it was in states such as Victoria and New South Wales.