This Seattle Capital Hill flat roof project features an 80 mil IB PVC membrane installed by Pinnacle Roofing Professionals on a low-slope roof in the Capitol Hill neighborhood. The single-ply, heat-welded system provides a watertight, long-lasting surface designed for Seattle’s heavy rain.
Project Overview: Capital Hill Flat Roof in Seattle
Capitol Hill homes and townhouses often have limited roof pitch, so a reliable flat roofing system is critical. For this Seattle project, the Pinnacle Roofing crew installed an 80 mil PVC membrane by IB Roof Systems. The fully adhered or mechanically attached PVC sheet is seam-welded to create a continuous waterproof layer, making it a strong choice for low-slope roof replacements in the Pacific Northwest.


Flat Roofing Materials Installed
- 80 mil PVC membrane by IB Roof Systems
- Heat-welded, single-ply waterproof roof surface
- Custom flashing and edge details for the low-slope assembly
If you need a flat or low-slope roof replacement in Capitol Hill or anywhere in Seattle, contact Pinnacle Roofing Professionals or call 206.919.3538 for a free estimate.