Fletcher Building said it expects further "material losses" at its building and interiors (B+I) business and expects to be in breach of its banking covenants once the losses are quantified.
Its stock and capital notes were halted pending a review of B+I projects.
Shane Solly, portfolio manager and analyst at Harbour Asset Management, said investors would be disappointed and would want a lot more detail from the company.
"Whenever a company breaches its banking covenants, it's an important event," he said.
"Although the project reviews are not yet complete, the current expectation of the board is that there will be further material losses in the B+I business beyond what was provided for in October 2017," the Auckland-based company said in a statement.