Covington-based Pool Corp.’s second-quarter earnings rose to $58.6 million, or $1.19 per share, compared to $52.8 million, or $1.05 per share, a year earlier.

The company said its results were lifted by higher-than-expected sales. Pool’s sales increased 9 percent to $706.4 million, compared to $647.5 million a year earlier.

However, Pool Chief Executive Officer Manuel Perez de la Mesa said the second half of the year will be tougher.

“Our expectations are for more modest sales and earnings growth in this period as we do not expect any notable changes in the external environment,” he said in a news release. “Nonetheless, we are confident that the year will continue to be a pivotal one for our company and the industry as a whole.”