NRCA Thermoplastic case studies
NRCA Thermoplastic · Put your knowledge to work in context.
The NRCA PROCertification® program is described by the National Roofing Contractors Association as its nationally recognized certification program for validating roof system installation knowledge and performance across key systems and roles. Within that program, the thermoplastic designation is aimed at the people who install and supervise thermoplastic membrane roof systems in the field. The NRCA site organizes PROCertification around audiences that include crew members, contractors, designers and educators, and it separates the process into exploring certifications by roof system type and then starting an application for the chosen designation. For a thermoplastic candidate, that means demonstrating both book knowledge of how these systems go together and hands-on performance of the work. The NRCA Thermoplastic case studies are 5 cases and about 2,450 words.
1Cold-Morning TPO Seam Failures at a Distribution Center
A 180,000 ft² distribution center in Columbus, Ohio, received a 60-mil TPO mechanically attached roof in late October. The contractor started welding at 7:00 a.m.
579 words, about 3 min2PVC Re-Cover Over Asphalt with Polystyrene Insulation
A 28,000 ft² PVC roof re-cover was installed over an existing four-ply asphalt built-up roof that had been cleaned and primed. The specification called for 1.5-in.
496 words, about 2 min3Corner Uplift on a Mechanically Attached TPO Roof
A 90,000 ft² TPO roof on a 10-story office building 1,200 ft from the Gulf Coast is mechanically attached over 1/2-in. recovery board and 3-in.
391 words, about 2 min4Adhered TPO with Cold Water-Based Adhesive
A 45,000 ft² TPO roof over a concrete deck is fully adhered with a water-based bonding adhesive. Work began October 15 in Minneapolis.
479 words, about 2 min5Ponding Between Drains on a New Low-Slope TPO Roof
A 60,000 ft² TPO roof over a new steel deck was designed with a 1/4-in.-per-foot slope to four roof drains. The roof has two layers of 3-in.
505 words, about 3 min