Roofing materials and roofing systems with improved fire resistance and methods of making thereof

A roofing material comprising:

• (a) an uncoated substrate having a first side and a second side, the uncoated substrate comprising a polyolefin base mat, wherein the uncoated substrate is a bottom layer of the roofing material, such that the second side of the uncoated substrate is configured to directly contact a roof deck;
• (b) a reinforcement layer having a first side and a second side, the second side of the reinforcement layer being attached to the first side of the uncoated substrate, wherein the reinforcement layer comprises at least one of a scrim, a fiberglass mat, or a polyester mat;
• and
• (c) a polymeric film layer directly attached to the first side of the reinforcement layer, wherein the polymeric film layer (i) consists essentially of at least one of polyvinyl chloride (PVC) or silicone, and (ii) has a thickness of 5 mils to 20 mils, wherein the polymeric film layer is a top layer of the roofing material that is configured to directly contact a roofing shingle,
• wherein the roofing material, when applied in a single layer and tested according to at least one of UL 790 or ASTM E-108 Standard Test Methods for Fire Tests of Roof Coverings, achieves a Class A rating for steep slope roofing systems.

A steep slope roofing system comprising:

• (a) a roof deck;
• and
• (b) a roofing material positioned above the roof deck, wherein the roofing material comprises:
• (i) an uncoated substrate having a first side and a second side, the uncoated substrate comprising a polyolefin base mat, wherein the uncoated substrate is a bottom layer of the roofing material, such that the second side of the uncoated substrate directly contacts the roof deck;
• (ii) a reinforcement layer having a first side and a second side, the second side of the reinforcement layer being attached to the first side of the uncoated substrate, wherein the reinforcement layer comprises at least one of a scrim, a fiberglass mat, or a polyester mat;
• and
• (iii) a polymeric film layer directly attached to the first side of the reinforcement layer, wherein the polymeric film layer (i) consists essentially of at least one of polyvinyl chloride (PVC) or silicone, and (ii) has a thickness of 5 mils to 20 mils, wherein the polymeric film layer is a top layer of the roofing material that is configured to directly contact a roofing shingle,
• wherein the roof deck is a steep slope roof deck having a pitch of Y/X, wherein Y and X are in a ratio of 2:12 to 12:12, with Y corresponding to the rise of the roof deck and X corresponding to the run of the roof deck, and
• wherein the roofing system, when tested according to at least one of UL 790 or ASTM E-108 Standard Test Methods for Fire Tests of Roof Coverings, achieves a Class A rating for steep slope roofing systems.