Project Overview
A homeowner in one of Bellevue's mature, heavily wooded neighborhoods along the Highway 70 corridor was dealing with an aging roof that was nearing the end of its functional life. With the area's dense tree coverage contributing to moisture retention and algae growth, the roof was showing severe signs of deterioration.
Worth Roofing Company performed a complete tear-off and installed a new architectural shingle system specifically designed to handle Bellevue's environmental factors, restoring the home's beauty and structural integrity.
The Roofing Challenge
The mature tree canopy in Bellevue means roofs often stay shaded and damp longer after rainstorms. This prolonged moisture exposure led to significant algae streaking and accelerated granule loss on the home's aging 3-tab shingles.
Additionally, the existing flashing around the home's large brick chimney had degraded over the years, creating a slow, hidden leak that was beginning to rot the underlying attic decking.
Inspection Findings
Our thorough inspection confirmed that the shingles had become extremely brittle and were beyond repair. We found extensive granule depletion, particularly in the valleys where water and organic debris from the surrounding trees had accumulated.
We also identified rotted OSB decking around the chimney base due to the failed flashing, which required immediate structural attention before a new roof could be installed.
Recommended Roofing Solution
We recommended a full roof replacement. To combat the moisture and algae issues common in Bellevue's wooded neighborhoods, we proposed upgrading to premium architectural shingles featuring built-in algae resistance.
We also planned to replace the rotted decking and install custom-fabricated metal flashing around the chimney to ensure a permanent, watertight seal.
Installation Process
Property Protection
We began by deploying heavy-duty tarps over the mature landscaping and hardscaping to protect the property from falling debris.
Complete Tear-Off
Our crews removed all existing shingles, underlayment, and old flashing down to the bare wooden decking.
Decking & Flashing Repair
We cut out and replaced the rotted OSB decking around the chimney and installed new custom metal flashing.
System Installation
The new algae-resistant architectural shingles were installed using an enhanced nailing pattern for maximum durability.
Final Cleanup
We performed multiple magnetic sweeps of the yard to remove stray nails and conducted a final quality assurance walkthrough.
Why This Was Appropriate
A full replacement with algae-resistant shingles was the perfect solution for a home in a mature, heavily wooded Bellevue neighborhood where moisture retention is a constant challenge.
Addressing the rotted decking and failing chimney flashing during the replacement ensured the new roof was built on a solid, watertight foundation.
Common Questions
Project Details
- Algae-Resistant Premium Architectural Shingles
- Breathable synthetic roof underlayment
- Self-adhering Ice and Water Shield (valleys and penetrations)
- Custom-bent aluminum chimney flashing
- New aluminum drip edge perimeter flashing
Benefits to Homeowner
- Stopped the slow, hidden leak around the chimney, preventing costly interior water damage.
- Provided long-term protection against unsightly algae growth with specialized, algae-resistant shingles.
- Dramatically enhanced the curb appeal of the property with a fresh, dimensional look.
- Restored the structural integrity of the roof deck by removing and replacing the rotted wood.
- Delivered peace of mind backed by a robust manufacturer warranty and our workmanship guarantee.