When the Boston landmark needed a new roof recently, designers decided it was time to make the home of champions a champion for energy efficiency – at least on the roof.

Environmental retrofits on the new roof include a reflective roof membrane that reduces energy use for cooling and minimizes the building’s contribution to the urban heat effect in Boston.

The Garden’s roof systems were 16 years old and had reached their serviceable life expectancy and required replacement. So workers removed approximately 156,000 square feet of existing roofing from the arena’s roof and gutter systems. The salvageable total of the existing roof membrane was recycled back into the project.