Home Depot Inc (HD.N) raised its full-year earnings forecast after reporting a 6.6 per cent rise in quarterly sales as customers spent more in a strong housing market.

Home Depot and smaller rival Lowe's Cos Inc (LOW.N) have benefited as consumers cut back spending on items such as apparel and accessories and instead spend more on houses and renovating and redecorating their homes.

"Housing continues to be a tailwind for our business," Home Depot Chief Executive Craig Menear said in a statement.

Low interest rates and a strengthening labour market are driving the housing sector. Home resales hit more than nine-year highs in May and June. July data will be released later this week.

Sales at Home Depot stores open more than a year rose 4.7 per cent, matching the average analysts' estimate, according to research firm Consensus Metrix.

The company's net income rose to US$2.44 billion, or US$1.97 per share, in the second quarter ended July 31 from US$2.23 billion, or US$1.73 per share, a year earlier.

Net sales of the world's biggest home improvement chain rose to US$26.47 billion from US$24.83 billion.

Analysts on average had expected earnings of US$1.97 per share on revenue of US$26.49 billion, according to Thomson Reuters I/B/E/S.

The company said it now expected earnings of US$6.31 per share for the year ending January, up from its previous forecast of US$6.27.