NEW YORK (Standard&Poor's) Nov. 4, 2014--Standard&Poor's Ratings Services said today that it assigned its 'BBB-' issue-level rating to Owens Corning's new senior unsecured notes. The company is offering the notes under its shelf registration filed Feb. 16, 2012. The company plans to use net proceeds from the sale of the notes to purchase portions of its 9% senior notes due June 15, 2019, and its 6.5% senior notes due Dec. 1, 2016, pursuant to the company's recent tender offer for those notes. After adjusting for the proposed transactions and for pension and other obligations, we expect the company will have debt of about $2.5 billion to $2.6 billion at year-end. This implies that leverage, as measured