The Federal Opposition has rejected the Government's offer of a private briefing on the safety inspections for home insulation.

Climate Change Minister Greg Combet has refused to release data on 55,000 insulation safety inspections, because the figures are not a representative sample.

But he offered his Opposition counterpart Greg Hunt a confidential briefing.

Mr Hunt has written to Mr Combet telling him he does not want the information if he cannot pass it on to the public.

He says Mr Combet is repeating the mistakes of the past by refusing to release the figures.

"It's not national security information, it's public safety information which should be in the hands of homeowners and we will not be party to a conspiracy which would lead to this information being kept from the public," he said.

"What the Government wants to do is to bind the Opposition with rules of secrecy and confidentiality on information which has no business being secret.

"We will not be party to a conspiracy of silence which keeps from the public the most basic safety information. How can it be that after all this time, the Government has learnt nothing and continues to ignore the advice of the experts that the material about safety and failures and the risk to homeowners must be disclosed?"