- (a) Unconventional roofing systems (roof systems other than built-up, modified bitumen, EPDM (ethylene propylene diene monomer) or single-ply) shall be submitted for review to the Design Review Section for approval on a case-by-case basis for use on the roof of a state building under Building Authority Division oversight.
(b) Criteria for approval shall be:
- (1) Acceptable material and method of application;
- (2) Ability of local installers to apply the proposed roof system;
- (3) Ability of the state to obtain competitive bids on the proposed roofing system;
- (4) Proven track record of the system and the manufacturer; and
- (5) Roof warranty available from the manufacturer for the particular installation.