Peabody, Mass.-based Beacon Roofing Supply posted a second-quarter net loss of $0.2 million, compared with net income of $3.1 million in the same quarter last year.
Sales increased 5.3% to $416.3 million in the quarter.
CEO Paul Isabella described the second quarter as "challenging."
He added: "We experienced harsh weather conditions in many of our markets, and we were up against a very strong second quarter last year when our existing market sales were up 28%."