As Mackay cleans up after last week's freak downpour, insurers are showing signs of taking an open attitude to claims.

With some 2000 homes and about 110 business affected by floodwater, CGU Insurance has indicated that most of its 600 claims may involve rainwater inundation, which is covered under most standard policies.

RACQ has received a similar number of claims, many of them for vehicles. Suncorp says it has received "hundreds" of claims.

A CGU spokesman says each claim is being studied on its individual merits, with the company using loss adjusters and hydrologists to help it reach its decisions.

"Early indications suggest that the vast majority of water damage in the Mackay area was the result of rainwater inundation," he said.

Mackay Regional Community Legal Centre principal solicitor Aaron Finn says he has "heard stories" of claims being refused, but the insurers' actions at this point accentuate the positive.

Suncorp GM Personal Insurance Lyndell Fraser says hundreds of staff, builders and tradespeople will be sent to Mackay in the next few weeks to assist in recovery work.

"An army of workers will progressively be rolled out," she said. "We want to do this in the most logical fashion."

There is some relief in hand for exhausted Mackay householders. While a severe weather warning is current for the exposed coast and islands, with strong winds forecast along the coast, the rain is easing and should be gone by Thursday.

Most of the area's rivers are in flood, and damage assessments are expected to take several weeks. Queensland Premier Anna Bligh has already indicated the damage bill will be in the hundreds of millions of dollars.