Opposition Leader Zed Seselja said he would persist with the motion because he wanted the Greens ''on the record saying they endorsed repeated misleads of the Assembly by a minister''.

Mr Seselja said the Greens' failure to support the motion was another indication they were an uncritical alliance partner of the Labor Party.

''As usual, the Greens accept whatever they've been told by the Labor Party,'' he said.

Greens environment spokesman Shane Rattenbury said last night that claims made by the Liberals about Mr Corbell lacked credibility.

''I don't think the case stacks up,'' he said.

The Liberals say that MrCorbell claimed there were no documents anywhere in the ACT Government on the insulation scheme, yet hundreds of pages were handed over. They also say Mr Corbell repeatedly said there were no reported complaints about poor or dodgy insulation, yet his own department said at least ''two complaints relate to inadequate quality of installation''. Mr Rattenbury said the Greens had reviewed the transcript and he had received a briefing yesterday from Mr Corbell's office and been satisfied the complaints received in the ACT about the insulation program had been more consumer-related than safety-related.

For more on this story, see the print edition of today's Canberra Times.