coating layers disposed on at least one surface of the reinforcing layer in one embodiment the reinforcing layer is a woven fabric in another embodiment the fabric or scrim is made from polyolefin materials such as polyethylene polypropylene copolymers and other combinations thereof in an exemplary embodiment the scrim is made from polypropylene film material and comprises 11 tapes per inch of a 875 denier polypropylene tape in the warp direction and 5 8 tapes per inch of a 1250 denier polypropylene tape in the weft direction in an alternative embodiment the reinforcing layer comprises a nonwoven fabric the scrim can be coated on one or both sides at least one coating layer comprises an anti slip coating layer the anti slip coating layer comprises a compound based on a styrene and ethylene butylene s e b s block copolymer in one embodiment the anti slip layer comprises a compound based on a styrene and ethylene butylene s e b s block copolymer comprising from about 30 75 by weight styrene ethylene butylene styrene block copolymer from about 0 50 by weight resin and from about 0 1 2 by weight antioxidant stabilizer dusting agent one such suitable s e b s based compound is kraton u00ae md6649 compound manufactured by kraton polymers referred to hereafter as u201c kraton 6649 u201d the anti slip coating layer may additionally comprise kraton u00ae g1730m compound referred to hereafter as u201c kraton 1730 u201d it has been found surprisingly that the anti slip coating layer provides anti skid properties to the roofing underlayment and also maintains tack when water is applied to the surface of the underlayment the smooth coating allows water run off to prevent water build up under.