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North Seattle Flat Roof Restoration Case Study

Jen Woslager • January 14, 2025
Project Overview

In North Seattle, Riverside Roofing LLC was tasked with a challenging but crucial flat roof repair on a commercial building that took three days to complete. The job involved addressing severe roof damage caused by poor roofing practices from a previous contractor, highlighting the importance of choosing the right professionals for roofing projects.

Problem Identification

Upon initial inspection, our team discovered significant rot caused by overframing directly over the existing old roof. The previous contractor had also installed excessive insulation across the entire roof area. This approach restricted air flow and trapped moisture directly against the roof substrate, accelerating the degradation and rot of the roofing materials.

Solution Implementation

Understanding the critical nature of the roof's condition, our team devised a comprehensive plan to restore the roof's integrity and functionality. The repair process included several key steps:
1. Extensive Woodwork and Removal of Rot: The first step involved removing all rotted materials and performing extensive woodwork to replace the damaged roof deck. Ensuring a solid and healthy foundation was crucial for the longevity of the new roofing system.
2. Installation of PolyGlass Self Adhere Torchdown System: Once the base was prepared, we installed the PolyGlass Self Adhere Torchdown system. This modern roofing solution involves two layers:
  • Self-Adhering Base Sheet: This layer is designed to adhere directly to the clean substrate without the need for additional adhesives, providing a secure and watertight base.
  • Self-Adhering Top Roll with Granulated Surface: The top layer was then rolled out over the base sheet. This layer features a granulated surface that not only enhances weather protection but also contributes to the roof's aesthetic and UV resistance.
3. Enhanced Ventilation: To address the initial cause of the rot—poor ventilation and overframing—we integrated a new ventilation system into the roof design. This ensured continuous airflow to keep the roof dry and prevent moisture buildup, protecting the roofing materials from similar issues in the future.

Outcome and Benefits

The restoration project was completed efficiently within three days, significantly improving the building’s structural integrity and insulation properties. The benefits of this project included:
  • Extended Roof Life: By removing the rotted materials and addressing the cause of the damage, the new roofing system is expected to last significantly longer than its predecessor.
  • Improved Energy Efficiency: The PolyGlass roofing system, along with proper ventilation, has improved the building’s thermal efficiency, reducing heating and cooling costs.
  • Enhanced Building Safety and Comfort: The new roof and ventilation system have eliminated the risks associated with mold and structural damage, creating a safer and more comfortable environment for occupants.
This project in North Seattle stands as a testament to the importance of proper roofing practices and the effectiveness of modern roofing technologies like the PolyGlass Self Adhere Torchdown system. Riverside Roofing LLC continues to commit to providing high-quality roofing solutions that meet the needs and exceed the expectations of our clients in North Seattle, WA.

For those in North Seattle considering roofing work, remember that choosing the right contractor can make all the difference in the longevity and effectiveness of your roofing investment. Contact Riverside Roofing LLC today to discuss how we can help with your roofing needs.
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