If your fireplace smokes, your living room smells like soot, or you’ve noticed water coming in around the chimney, the problem often comes down to draft, ventilation, or a missing or damaged chimney cap. This guide explains how chimney caps and proper drafting work together to keep your Hackensack home safe, comfortable, and free of smoke and moisture problems.
A chimney cap is a protective cover installed at the top of the chimney. It may look simple, but it plays a critical role in chimney safety and performance.
Keep rain and snow out of the flue
Block animals and debris from entering
Reduce downdrafts caused by wind
Protect the crown and masonry from accelerated wear
Contain sparks and embers from leaving the flue
Without a cap, water, animals, and debris can quickly lead to leaks, odors, clogs, and masonry deterioration. If you suspect your cap is damaged or missing, our chimney repair services can inspect and recommend the right replacement.
“Draft” is the natural upward flow of hot air and combustion gases through the chimney. When draft is strong and consistent, smoke and fumes exit the home efficiently. When draft is weak or reversed, smoke, odor, and carbon monoxide can be pushed back into your living space.
Smoke entering the room when you start a fire
Difficulty getting a fire to stay lit
A strong smoky odor even when the fireplace isn’t in use
Cold air falling down the flue on windy days
Soot staining around the firebox opening
Draft problems are often discovered during a chimney inspection, where our technicians evaluate the flue size, height, cap, and surrounding conditions to find the root cause.
Draft issues rarely come down to a single factor. In Bergen County homes, the most common causes include:
Oversized or undersized chimney flues
Chimneys that are too short relative to the roofline
Trees, buildings, or roof structures that block wind flow
Negative air pressure inside the home from exhaust fans or tight construction
Missing, poorly sized, or improperly installed chimney caps
Clogged or partially blocked flues
Fixing the draft usually means addressing several of these factors together rather than just one piece.
When rain and snow fall directly into an uncapped chimney, moisture can soak into the flue liner, firebox, and nearby masonry. Over time this leads to:
Rusted dampers and metal components
Crumbling mortar and brick
Musty or smoky odors in the home
Stained walls and ceilings around the fireplace
A properly installed cap and crown act as the first line of defense against water intrusion. If you’re dealing with recurring chimney leaks, our chimney repair team can assess the condition of your cap, crown, and flashing to stop the problem at its source.
The right fix depends on the cause of the issue. Common solutions include:
Installing or replacing chimney caps with the correct size and mesh
Adding wind-resistant or directional caps to improve draft
Repairing or rebuilding damaged crowns around the cap base
Extending chimney height where needed for better draft
Correcting flue sizing when mismatched with the appliance
Clearing blockages or obstructions within the flue
In many cases, the best approach is a full system assessment that looks at:
The fireplace or appliance
The liner and flue
The cap, crown, and masonry
The home’s interior pressure and ventilation
Our chimney inspection services are designed to identify these interacting factors and recommend a repair plan that improves both safety and performance.
Contact a chimney technician if:
Your fireplace fills the room with smoke
You feel cold air falling down the chimney
You’ve noticed water stains or a musty smell near the fireplace
Your chimney cap looks damaged, rusted, or crooked
Birds, squirrels, or other animals appear to be nesting in the chimney
Addressing drafting and cap issues early prevents larger structural problems and keeps your home more comfortable all year.
If you’re dealing with smoke, odors, or chimney leaks, our team can inspect your chimney cap, flue, and ventilation to pinpoint the problem. We serve Hackensack, Bogota, Maywood, Teaneck, Lodi, Elmwood Park, Englewood, New Milford, Ridgefield Park, Palisades Park, and nearby Bergen County communities.
Call Today! (551) 313-9844
Or start by booking a chimney inspection so we can evaluate your system and recommend the right repairs.

Your Best Chimney Sweep
Address: Hackensack, NJ 07601
Phone: (551) 313-9844
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