This Shoreline flat roof project replaced an aging torchdown roof that had reached the end of its serviceable life. Pinnacle Roofing Professionals installed a 50 mil gray IB PVC membrane by IB Roof Systems and added CrystaLite skylights to bring natural light into the home. During construction we also corrected significant ventilation issues, which is critical when transitioning from a torchdown roof system to a PVC membrane roof.
Project Overview: Shoreline Flat Roof Replacement
Located in Shoreline, WA, this low-slope roof needed a system that could handle the Pacific Northwest’s heavy rainfall and temperature swings. The old torchdown roof was removed, the substrate was inspected and prepared, and a new IB Roof Systems 50 mil PVC membrane was installed with heat-welded seams for a fully waterproof assembly. Proper ventilation was added to prevent moisture buildup, a common issue when switching from torchdown to PVC.
Why Switch From Torchdown to PVC
Torchdown roofs can provide years of service, but once they age out, PVC roofing offers a longer-lasting, heat-welded alternative. IB Roof Systems PVC membranes resist ponding water, UV exposure, and thermal movement better than older modified bitumen systems. Ventilation adjustments during replacement help protect the new roof assembly and extend its service life.
Shoreline Flat Roof Gallery
Roofing Materials Installed
- 50 mil gray PVC membrane by IB Roof Systems
- Heat-welded seams and integrated flashing details
- CrystaLite skylights
- Corrected roof ventilation for the new PVC assembly
- Complete removal of the old torchdown roof system
If your torchdown or flat roof is nearing the end of its life in Shoreline, WA, contact Pinnacle Roofing Professionals or call 206.919.3538 for a free flat roof estimate.