X0306 4/A 2015-12-31 2016-01-05 false 0000912562 GIBRALTAR INDUSTRIES, INC. ROCK 0001239854 SMITH KENNETH WALTER 3556 LAKE SHORE ROAD P.O. BOX 2028 BUFFALO NY 14219-0228 false true false false Senior VP & CFO Common Stock 2016-01-02 4 A false 2306.00 0.00 A 51157.00 D Common Stock 2016-01-02 4 A false 2290.00 0.00 A 53447.00 D Common Stock 2016-01-02 4 A false 2715.00 0.00 A 56162.00 D Common Stock 2016-01-03 4 A false 2648.00 0.00 A 58810.00 D Amended due to administrative error arising from utilization of a new IT system for filing Form 4. Represents total shares of common stock acquired by Reporting Person upon conversion of restricted stock units awarded as part of the Company 's Long Term Incentive Plan into common stock upon vesting. /s/ Paul J. Schulz, Attorney in Fact for Kenneth W. Smith 2016-01-07