Cracked or Deteriorating Brick and Mortar
One of the most visible signs of chimney trouble is cracking or crumbling masonry. Over time, moisture seeps into small cracks in brick and mortar. When temperatures drop, that moisture freezes and expands, causing further damage.
You may notice missing mortar joints, loose bricks, or areas where the surface appears to be flaking or breaking apart. These issues weaken the structure of the chimney and allow even more water to enter. Left untreated, minor masonry damage can lead to major structural repairs.
Water Leaks Inside the Home
Interior water damage is a serious sign that your chimney needs immediate attention. Moisture can travel down the chimney and into your attic, ceilings, or walls, creating stains, mold growth, or wood rot.
Leaks are often caused by damaged flashing, cracked crowns, or deteriorated masonry. Even small leaks can lead to long-term damage if they are not addressed quickly. If you notice water stains near your fireplace or chimney, it is important to act right away.
White Staining on the Chimney Exterior
White, chalky residue on the outside of your chimney is called efflorescence. While it may look harmless, it is a sign that moisture is moving through the masonry.
Efflorescence forms when water dissolves salts inside the brick and carries them to the surface. This indicates ongoing moisture intrusion, which can lead to brick spalling and mortar deterioration over time. Addressing the source of moisture early can prevent more serious damage.

Loose or Damaged Chimney Cap or Crown
The chimney cap and crown play a critical role in protecting your chimney from water damage. A missing or damaged chimney cap allows rain, snow, and debris to enter freely. A cracked crown allows water to soak into the masonry below.
Both issues increase the risk of internal damage, freeze-thaw deterioration, and even animal intrusion. Regular inspections can catch these problems before they lead to more expensive repairs.
Draft Issues or Fireplace Performance Problems
If your fireplace is not drafting properly, it may indicate chimney damage or blockage. Smoke entering your home, unusual odors, or difficulty starting a fire are all signs that something may be wrong.
Draft problems can be caused by damaged flue liners, masonry deterioration, or moisture-related issues inside the chimney. These problems can affect both safety and performance, making professional evaluation essential.
Why Prompt Chimney Repairs Matter
Chimney issues rarely improve on their own. In fact, they tend to worsen as water, weather, and time continue to take their toll. Addressing problems early can help preserve the structure of your chimney, protect your home from water damage, and reduce overall repair costs.
At N&M Restoration, we understand how Michigan’s climate impacts chimneys and masonry systems. Our team focuses on identifying the root cause of chimney issues and providing durable, long-term solutions.
If you notice any of these warning signs, scheduling a professional chimney inspection can help you understand the condition of your chimney and determine the best path forward.