Applying a Cool Roof will reduce the cost to cool the building in the summer.

Put a “cool roof” on your building to keep the sun’s heat from entering and remaining in the building. Reflective asphalt shingles, when applicable, can also deflect the sun’s rays back into the atmosphere. Seek Energy Star® qualified roofing products when renovating the roof.

http://www.nyc.gov/html/coolroofs/html/home/home.shtml

http://www.nyc.gov/html/dob/html/sustainability/coolroofs.shtml

Installing insulation in walls will prevent costly heat gain and loss

Bulk insulation products such as, batts, rolls, blow-in cellulose fibers, rigid boards, expanding spray foam and pour-in-place will keep your building warm in the winter and cool in the summer.

Explore and compare different insulation products to find the best insulation for your project: http://www.naima.org/insulation-knowledge-base/general-overview-of-insulation.html