Chimney Company in Smithtown, NY — Owner-Operated Since 2001

DME Maintenance Suffolk County Department of Consumer Affairs License #H-43223 provides professional chimney services in Smithtown, NY, 11787. Locally owned and operated since 2001 — no call centers, no subcontractors. Whether you need a stainless steel chimney liner installation, chimney repair, chimney cleaning, chimney pointing, or any other chimney service, we serve Smithtown and all surrounding Suffolk County, NY communities with convenient appointments.

📍 Long Island Based Owner Operated Chimney Company serving Smithtown, NY — also proudly serving Commack, Hauppauge, St. James, Kings Park and all surrounding communities.
A DME Maintenance service

What We See Most Often in Smithtown

Every town on Long Island has its own chimney personality, and Smithtown is no exception. The weather here — North central Suffolk, heavy winter freeze cycles — puts real pressure on masonry year round. The freeze-thaw cycle through winter and early spring is the main culprit: moisture works into small surface cracks, freezes, expands, and opens those cracks a little wider each time. After enough seasons, what was a minor surface issue becomes chimney repair territory. The single most common call we get from Smithtown homeowners is about freeze-thaw mortar joint failure, and it almost always traces back to deferred maintenance rather than anything catastrophic. Catch it early with annual chimney cleaning and inspection, and the fix is usually straightforward and affordable.

Homes near Smithtown Bull statue and Caleb Smith State Park tend to reflect the construction era that shaped Smithtown — Founded by Richard Smythe in 1665, one of LI's oldest towns. Older homes especially can have clay tile flue liners that are past their service life, mortar joints that have been slowly eroding for decades, and chimney crowns that were never poured correctly to begin with. A cracked or undersized crown lets rain fall directly into the flue opening, and from there water migrates into the firebox, the smoke chamber, and eventually the walls. chimney crown repair or a new chimney crown is usually the first thing we recommend when a homeowner tells us water is getting in from the top. Combined with chimney waterproofing on the exterior masonry, it stops the problem at the source.

Masonry Work: Pointing, Crowns, and Waterproofing

Brick chimneys are tough, but mortar is not. Most mortar joints have a useful life of twenty-five to thirty years under normal Long Island conditions. When the mortar starts to pull back from the brick face, water gets a direct path into the chimney structure. chimney pointing removes the damaged mortar and replaces it with a fresh mix matched to your existing joints. After any masonry work, we recommend chimney waterproofing to protect the repaired surfaces from future moisture penetration.

Gas, Oil, and Wood — We Handle All Fuel Types in Smithtown

Not every chimney in Smithtown is for a wood-burning fireplace. A lot of the homes here heat with natural gas or oil, and both systems vent combustion gases through a flue that needs to be inspected and cleaned just like any other chimney. gas chimney cleaning matters because gas combustion produces acidic condensate that attacks clay tile liners over time. oil chimney cleaning addresses the heavy fuel soot that gradually restricts draft. For wood-burning fireplaces, fireplace cleaning removes creosote before it becomes a fire hazard. A top-sealing damper installation seals the flue when idle, eliminating drafts and heat loss.

If your appliance vents through an original clay tile liner, upgrading to a stainless steel chimney liner is one of the most important safety investments available. It is required by code when you replace a furnace or boiler in most Suffolk County, NY municipalities.

Don’t Overlook the Gutters

Clogged gutters and chimney problems go hand in hand. gutter cleaning helps prevent the overflow that accelerates chimney flashing failure and mortar deterioration. Booking both in one visit saves you a separate appointment.

All Chimney Services in Smithtown, NY

• Chimney Cleaning in Smithtown
• Chimney Repair in Smithtown
• Chimney Cap Replacement in Smithtown
• Stainless Steel Chimney Liner in Smithtown
• Chimney Pointing in Smithtown
• Chimney Crown Repair in Smithtown
• Top-Sealing Chimney Damper in Smithtown
• Fireplace Chimney Cleaning in Smithtown
• Gas Chimney Cleaning in Smithtown
• Oil Chimney Cleaning in Smithtown
• Chimney Waterproofing in Smithtown
• Chimney Crown Installation in Smithtown
• Gutter Cleaning in Smithtown
• No Heat Emergency Service in Smithtown
• Dryer Vent Cleaning in Smithtown
• Roof Leak Repair in Smithtown

Service Pricing

We Know This Area

DME Maintenance has been working in Smithtown and surrounding Suffolk County, NY communities since 2001. We cover the 11787 zip code and all neighboring towns: Commack, Hauppauge, St. James, Kings Park. Call 516-690-7471 to schedule — most appointments in the Smithtown area are available same week.

Our Service Area