HDZ Construction | Roofing Services in Aliquippa, PA 15001

We use a safe, professional-grade treatment to kill existing moss and remove it without damaging your shingles. More importantly, we identify and address the underlying cause—often moisture retention from shade or clogged gutters—and can install zinc or copper strips at the ridge to prevent future growth, a key step for long-term protection in our humid climate.

In our area, flashing separation is often due to temperature swings, wind uplift, or improper initial installation. We inspect all flashing points—around chimneys, vents, and valleys—remove the compromised material, and install new, code-compliant flashing sealed with high-grade urethane or roofing cement. This creates a watertight seal designed to withstand Aliquippa's weather.

Inside, check for water stains on ceilings or walls, especially near chimneys or plumbing vents. Outside, look for visible gaps, rust, or lifted metal around roof penetrations. If you see moss growth in a specific area, it can also indicate moisture from a hidden leak. We offer free, no-obligation inspections to pinpoint the exact issue and provide a clear repair plan.