Stainless Chimney Liners & Relining

Why Chimney Relining Matters

Your flue is the exhaust path for smoke and combustion byproducts. If the pathway is cracked, oversized, or corroded, gases slow down, cool off, and condense—causing odors, staining, and even carbon monoxide risks. A properly sized stainless steel chimney liner restores a smooth, continuous passage from appliance to termination, improving draft and safety. On Long Island, cold, windy shoulder seasons make draft tricky; a correctly insulated liner helps stabilize performance in those conditions.

When a Liner Is Needed

• Cracked or missing tiles: Clay tiles with fractures or gaps can leak heat and flue gases into the chimney walls.
• Fuel conversions: Changing from oil to gas (or adding a gas insert) often requires a different flue size and material.
• Oversized flues: Big masonry flues paired with modern, efficient appliances cause slow, smoky draft—lining reduces volume and boosts velocity.
• Corroded liners: Metal liners that have rusted through or oil/gas byproduct damage warrant replacement.
• After a chimney fire: Interior surfaces may be compromised; relining restores integrity.

Our Relining Process

1. Evaluate & size: We measure appliance outputs and flue dimensions to select the correct diameter and profile (rigid or flex).
2. Prep the path: We clear obstructions—if needed, we address blockages or remove damaged tile sections safely.
3. Install liner: Insert the stainless liner from the top or bottom, connect with listed adapters, and center as required.
4. Insulate when needed: We add wraps or pour insulation to maintain flue temps, improve draft, and meet code clearances.
5. Terminate & cap: We secure a top plate, storm collar, and a properly sized chimney cap to keep weather and animals out.
6. Test & document: We verify draft/operation and provide photos of connections and termination.

Rigid vs. Flex—Which Is Better?

Rigid stainless offers a smooth interior and excellent draft in straight flues with minimal offsets; it’s durable and easy to clean. Flex stainless navigates bends and offsets common in older masonry stacks. We choose based on your chimney’s path and appliance needs—sometimes a hybrid approach makes the most sense.

Insulation: A Small Step with Big Benefits

Proper insulation keeps flue gases warm, reducing condensation that leads to creosote (wood) or corrosive moisture (oil/gas). It also helps draft at startup, particularly on exterior walls. Where required by listing or clearance, we wrap or pour insulation around the liner. The payoff is steadier performance and longer liner life.

Common Symptoms a Liner Will Help Solve

• Smoke roll-out at startup or when doors are opened
• Persistent fireplace odors even when cold
• Back-puffing on windy days
• CO detector alerts with gas appliances
• Heavy creosote buildup despite good burning habits

Related Services for a Complete System

• Chimney cleaning to remove soot/creosote before and after the install.
• Crown repair so water doesn’t attack the new top plate and liner collar.
• Flashing & leaks if water is entering where the stack meets the roof.
• Waterproofing for the upper courses to limit future saturation.
• Inspection with photos to document condition and sizing decisions.

Ready to stabilize draft and restore safety? Request a liner quote or call 516-690-7471. We serve Nassau and Suffolk with clean installs and clear documentation.