Dibiten cool roofing vs. Certainteed "self-adhered" roof
Just curious, how would you compare these two systems: (1) Dibiten APP modified bitumen Membrane (Poly/4) then top with a coat of reflective coating on its surface (cool roofing), versus (2) Self-Adhered "Certainteed" Flintlastic SA PlyBase then top with another layer of Flintlastic SA Cap (granule-surface).. Thoughts or comments?
Also our roofer used two layers of NailBase in some areas (corners, walls, etc.) instead of one base layer of Nailable Base (NailBase) then another layer of "Flintlastic SA Mid Ply"... just wondering whether the NailBase and Mid Ply are very different in terms of how the materials were made, etc. Thanks!