Chimney Chase Top Replacement on Long Island

If your home has a prefabricated (factory-built) fireplace, your chimney chase is topped with a metal cover called a chase top or chase cover. This is one of the most failure-prone components on Long Island homes, and a failed chase top causes some of the most expensive water damage we see.

The problem is simple: most builder-installed chase tops are made from galvanized steel, a material that cannot withstand Long Island's salt air environment. Within 10-15 years, the galvanized coating breaks down, the steel rusts through, and water pours directly into the wood-framed chase. By the time you notice stains on the ceiling, the damage inside the chase can be significant.

Capstone Chimney replaces failing galvanized chase tops with custom-fabricated stainless steel or copper chase covers that will never rust. Every chase top we build is:

- Custom-measured to fit your specific chase dimensions precisely - Fabricated from heavy-gauge 304 stainless steel or copper - Formed with proper cross-break reinforcement to prevent oil-canning and water pooling - Sloped for positive drainage away from the flue penetration - Finished with 1.5-inch drip edges on all sides to prevent water from running down the chase siding - Sealed at the flue penetration with a storm collar and high-temperature sealant

Before installing a new chase top, we always inspect the chase interior for existing water damage. If we find rotted framing, mold, or saturated insulation, we'll document it and recommend necessary repairs before sealing the chase with a new top. It makes no sense to cap a chase that already has damage inside.

Our stainless steel chase tops carry a lifetime warranty against rust and corrosion—a warranty that's realistic because stainless steel genuinely doesn't corrode in our coastal environment. Stop replacing galvanized tops every decade and invest in a permanent solution from Capstone Chimney.