Duratec (ASX:DUR) revised its revenue and normalized earnings before interest, taxes, depreciation, and amortization (EBITDA) guidance for the current fiscal year, according to a Friday filing with the Australian bourse.

The revenue guidance was lowered to a range of AU$570 million to AU$585 million from AU$600 million to AU$640 million, attributed to delays in expected project awards and weather disruptions, the filing said.

Meanwhile, EBITDA guidance was adjusted to a range of AU$50 million to AU$53 million from AU$52 million to AU$56 million.

The guidance is based on the company's current earnings from work delivered so far and forward forecast assumptions of earnings from work set to be delivered by the end of the financial year, per the filing.

Shares fell past 6% in midday trade Friday.