Versico's VersiWeld TPO Crossgrip Walkway Rolls protect TPO roofing membrane from regular foot traffic and provide a safe path of maintenance workers. Featuring an open grid design, Crossgrip TPO Walkway Rolls are made from durable, high-quality TPO that provides excellent resistance to weathering. Crossgrip's two-layer construction (a cross-directional top rib and "diamond cut"-surface) provides a firm, slip-resistant surface which is impermeable in all weather conditions, and will remain stable in winds.