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Flashing is one of the most critical and most frequently misunderstood components of any roofing system. These thin metal strips seal the vulnerable intersections where your roof meets vertical surfaces like chimneys, walls, skylights, and vents, and where roof planes meet each other in valleys. When flashing is installed correctly, these junctions are watertight for years. When it's done poorly or becomes damaged, water finds its way in quickly and silently. At Allstate Roofing, our roof flashing and chimney flashing services in Bangor, ME address leaks at their source with precision installation and quality materials.
Contact us today for a free inspection.
We provide complete flashing installation, repair, and replacement for all types of roof penetrations and intersections.
Most roof leaks trace back to flashing failures. Let us find and fix yours. Contact us today for a free inspection.
Chimney flashing is a critical roofing detail that seals the joint between the chimney and roof to prevent water intrusion. It includes base flashing, step flashing, counter flashing, and a cricket system that work together to redirect water and ensure long-term waterproofing performance.
Roof valleys, where two roof planes intersect, concentrate significant water flow during rain events. Valley flashing provides a continuous metal channel that guides this water safely to the gutters. Improper valley flashing is a frequent cause of roof leaks.
Step flashing is used where a roof plane meets a vertical wall surface, such as at dormers or attached walls. It consists of individual L-shaped metal pieces installed in an overlapping stairstep pattern alongside each course of shingles. This allows the wall and roof to move independently without breaking the water seal.
Drip edge flashing is installed at the eaves and rakes of a roof to direct water off the edge cleanly and away from the fascia board. While it may seem like a minor detail, proper drip edge installation prevents fascia rot and protects the roof deck at its most vulnerable edges.
Visible rust streaks running from a chimney or vent, water stains on ceilings near chimneys or skylights, gaps or visible separation in flashing metal, cracked or missing caulk at flashing joints, and lifted or buckled flashing are all signs that your flashing system needs inspection or repair. These issues rarely resolve themselves and should be addressed promptly before water intrusion causes broader damage.
If you suspect a flashing failure or simply want to verify that your roof's vulnerable intersectionsare properly sealed, contact Allstate Roofing today. Our team provides free inspections andhonest assessments throughout Bangor and surrounding communities in central and easternMaine.