A Christchurch man has gone on hunger strike in a push for his earthquake insurance claim to be resolved.

Peter Glasson's home suffered significant damage in the 2010 and 2011 earthquakes, and he says he's still waiting on insurance company Southern Response to play fair.

But the company says it has tried to resolve the situation - even offering to fix the house - but could not come to an agreement.

The dispute began in 2016, which was when the insurance company "first became aware that the Glassons had issues with their house foundations", chief executive Anthony Honeybone says.

"We started working with the Glassons to settle their claim from this point and, after we were able to broadly understand their issues, we offered to mediate with them. Unfortunately mediation was unsuccessful.

"Southern Response has offered to actually undertake the work to repair the Glassons' house."

But the two parties could not agree on the extent of the repairs required for Mr Glasson's house, and he says vowing off food, which he began on Tuesday morning, is his last resort.

"We've tried to speak to Southern Response," he told Newshub.

"They're refusing to meet with us and refusing to discuss our claim and so it's just a very problematic position that we've got ourselves into.

"There must be another process that is a more practical process for resolving these claims than simply just delaying them like Southern Response does."