CHICAGO, IL --USG Corporation(NYSE: USG), a building products company, is offering their Facebook fans a chance to win up to $500 through their Strength Beneath the Surface Contest which requires contestants to submit an on-the-job picture of themselves with USG tile and flooring products.

The Grand Prize winner will receive a $500 gift card. Four runners-up winners will each receive a $100 gift card. All entrants will receive a t-shirt.

This contest is open to professional contractors, subcontractors, do-it-yourselfers and others who are engaged in the construction or remodeling industry. To participate, entrants must be a legal resident of the U.S. and 18 years of age and older.

The Strength Beneath the Surface photo must show the participant and USG tile and flooring products on the job. Products can include: Durock® Cement Board, Fiberock® Tile Backerboard, Fiberock® Underlayment, Durock™ Tile Membrane, Durock™ Tile Membrane Adhesive, Fiberock™ Floor protector Paper, Builder Paper, Durock™ Multi-Use Self-Leveling Underlayment, Durock™ Quick-Dry Self-Leveling Underlayment, Durock™ Floor Patch, Durock™ Primer-Sealer, Durock™ Tile Backer Tape and Durock™ Tile Backer Screws.

Judging will take place October 22 – October 26, 2012, with a judging panel consisting of marketing and product managers from USG Tile and Flooring Installations. Finalists will be selected based on craftsmanship, creativity and use of USG Tile and Flooring Installation Products. Voting will then be turned over to the public on October 29 –November 11, 2012, when each person can vote once a day for their favorite picture. Judges will announce the final winner on or by November 16, 2012.

For more information about the Strength Beneath the Surface Contest, please visit www.facebook.com/usgtileflooring