Underlayment brands used the most in the U.S. 2014

A sample of 10,800 was selected from BUILDER’s domestic qualified “builder,” “builder/developer,” and “general contractor” print circulation, including those who receive the magazine as a benefit of NAHB membership. The detailed methodology may be found http://cdnassets.hw.net/62/62/b7e51fc54a94981c56800fce36d6/2015-builder-brand-use-report-final.pdf
Multiple answers were possible.
* Page 425 of Adobe publication.