Hi,

I have a client who will be crushing rock native to the local site (winery) for hardscape pathways as well as pathways on a vegetated roof.

It looks like if we want to take credit for this material to be treated as a as a nonroof material it should be:

1) Use paving materials with an initial solar reflectance (SR) value of at least 0.33.
2) Use an open-grid pavement system (at least 50% unbound).

So the pathway material should be tested for an SR value or it should be incorporated into an open grid pavement system. Is that correct?

Thank you.