Taranaki Rugby chief executive Mike Sandle says the union shares the fans' disappointment.
"It has been our understanding that the roof would be completed in time for the Yarrows Taranaki Bulls game against Waikato on Saturday, September 3, and we had proceeded to sell sponsorships, memberships and hospitality packages in good faith on that basis."
He says Taranaki Rugby is committed to playing the last three round-robin games and any home playoffs at Yarrow Stadium after starting the season at Pukekura Park.
"A number of our commercial partners and members will have purchased tickets expecting to be undercover. It's my great hope that the community will continue to support Taranaki Rugby despite this change in circumstances. The completed facilities at Yarrow Stadium will be the envy of other regional centres including a new hybrid turf perfect for entertaining rugby."
He also thanked the contractors who have been working on the project in a challenging environment.
"We look forward to seeing you at Pukekura Park for our first two Bunnings NPC home games against Northland on August 7 and Canterbury on August 20, and at our spiritual home of Yarrow Stadium beyond that."