In 2008 the roof covering the Martin Guitar finishing area was replaced with a new thermoplastic polyolefin (TPO) membrane. TPO membrane is energy efficient. Its white surface reflects the sunlight and reduces building cooling costs. TPO membranes are chlorine-free, and their heat-welded seams further contribute to the system's environmental friendliness.
By September 2009, 36% of the roof at Martin Guitar's 510 Sycamore Street facility was replaced using the same TPO membrane material.