UltraPly™ TPO Walkway Pad is a reinforced walkway composed of white thermoplastic material. The pad is produced into 30″ (0.76 m) wide by 50′ (15 m) long rolls. The pad has a textured surface and a smooth bottom surface for easy welding to UltraPly TPO roof membrane. The walkway pad is recommended in areas where necessary rooftop traffic will occur to help protect the roofing system from unnecessary damage as follows: UltraPly TPO Walkway Pad Image. At all access points (ladders, hatches, doorways, etc.) to the roof. As a walkway system on roofs subjected to traffic more frequently than once per month. Around rooftop equipment that requires periodic maintenance.