Silver coating on flat roof in Chicago needed?

[Michelle Bright]

Hey BP! Got the inspection back. Do you think it is important in the Mid-West, Chicago to be specific, to ask for the fact roof to be coated in aluminum to protect from UV Rays? How much longer of a life span will I get? The roof is brand new and there weren't any other issues with it that the inspector pointed out. Thank you in advance.

[Roy N.]

Originally posted by @Sam Shueh:

Reflector can be applied from roof subflooring inside the attic to keep roof and house cooler in the summer.

 Sam:

The aluminium pigmented coating on the rooftop is primarily aimed at protecting the roof membrane itself with reduction of thermal loading in the building being secondary.   Conversely, applying a reflective layer below the roof truss space will help keep the conditioned space of the building cooler in the summer, but may have little (or even an adverse) impact on the temperature of the roof deck itself.