Lion Roofing & Exteriors | Roofing Services in Portland, OR 97236

Portland's frequent rain and moisture create an ideal environment for galvanic corrosion, especially where dissimilar metals meet on your roof. We fix this by first removing the corroded flashing. Then, we install new, high-quality flashing using compatible metals or coated materials designed for our climate, and we ensure proper sealing and integration with your shingles to prevent future water intrusion.

Signs of underlayment damage inside your home include water stains on ceilings or walls, or a musty smell in the attic. From outside, you might see curled or missing shingles. It's a critical repair because the underlayment is your roof's secondary water barrier. If it's compromised, water can seep directly into your roof deck, leading to rot, mold, and major structural issues. We perform thorough inspections and replace damaged underlayment with durable, waterproof synthetic materials.

Both are equally vital, as they work as a system. Flashing directs water away from vulnerable joints (like chimneys and valleys), while underlayment provides the blanket of protection underneath your shingles. During an inspection, we assess the condition of both. Often, addressing one reveals issues with the other. Our approach is to ensure the entire water-shedding system—from the top shingle down to the deck—is intact and functioning to protect your investment.