This Seattle PVC roof replacement removed an aging flat roof system that had been installed improperly by a previous contractor. The original installation lacked proper ventilation and flashing integration, which led to premature failure. Pinnacle Roofing Professionals stripped the failing roof, rebuilt and flashed the chimney, and installed a premium 80 mil IB PVC membrane by IB Roof Systems for long-term performance in Seattle’s wet climate.
Problems With the Previous Roof Installation
During demolition we discovered several installation problems. The previous contractor had installed the PVC roof over an older built-up roofing system without proper preparation, and the chimney had been wrapped in roofing membrane instead of being rebuilt and flashed correctly. These shortcuts often lead to moisture intrusion and roof failure on low-slope roofs in the Pacific Northwest.
Installing an IB PVC Roofing System
To correct the issues, Pinnacle Roofing Professionals installed a premium 80 mil IB Roof Systems PVC membrane. PVC roofing membranes are known for durability, heat-welded seams, and resistance to ponding water, making them one of the most reliable flat roofing options for Seattle homes and buildings.
Chimney Reconstruction by Pinnacle’s Master Mason
As part of this project, our in-house Master Mason reconstructed the chimney from the roofline upward. Proper chimney rebuilding and flashing integration are essential to maintaining a watertight roofing system. By addressing both the roofing and masonry work together, Pinnacle Roofing Professionals ensured the entire roof assembly performs as a single durable system.
Seattle PVC Roof Replacement Gallery
Roofing Materials Installed
- 80 mil IB Roof Systems PVC membrane in bronze
- Heat-welded seams and fully integrated flashing
- Chimney reconstruction and counter flashing by Pinnacle’s Master Mason
- Proper ventilation and flashing integration
- Removal of improperly installed PVC over old built-up roofing
Why PVC Roofing Works Well in Seattle
Seattle’s climate places heavy demands on roofing systems due to constant rainfall, moisture, and temperature fluctuations. PVC roofing membranes perform extremely well in these conditions because they provide fully welded seams, excellent waterproofing, and resistance to standing water. When installed properly, PVC roofs can provide decades of reliable service.
Schedule a Seattle Flat Roof Inspection
If your flat roof is leaking or nearing the end of its service life, contact Pinnacle Roofing Professionals or call 206.919.3538 for a free flat roof estimate. We specialize in Seattle PVC roofing, flat roof replacement, and IB Roof Systems installation throughout the Puget Sound region.