Year-Round Residence — Snoqualmie Pass
The Challenge
Year-round occupancy at 3,000 feet elevation requires a roofing system that performs reliably under heavy snow accumulation, extended freeze periods, and summer UV exposure.
The existing system was installed without consideration for high-elevation performance requirements and had developed multiple failure points after only eight years.
Our Approach
We engineered a complete roofing system replacement beginning with a full deck inspection and replacement of all damaged sheathing.
The new assembly incorporated a high-performance underlayment, extended eave ice barrier, balanced ventilation, and architectural shingles rated for the wind and precipitation loads typical of this elevation.
All valley, ridge, and penetration flashings were upgraded to heavy-gauge galvanized steel and sealed with urethane sealant.
The Result
The replacement system has performed through multiple winter seasons without any reported failures or water intrusion events.
The homeowner reports significantly improved comfort during winter months due to the corrected ventilation balance reducing heat loss through the roof assembly.
Key Elements
- Full ice and water shield coverage in vulnerable zones
- Balanced ridge and intake ventilation system
- Architectural composition shingles rated for high-wind and heavy weather exposure
- Reinforced flashing at low-pitch transitions
- Integrated underlayment system for moisture management