Five Signs Your Chimney Needs Repairs

Fireplaces are more than just heat sources for your home; they add atmosphere and value and hearken back to simpler times that many people enjoy. However, your fireplace — especially the chimney — needs routine maintenance to ensure safety and efficiency. That’s why it’s crucial to recognize the signs that your chimney needs repairs before they get out of hand.

In this post, we look at the five most common signs that your chimney requires fixing and why you should trust a professional to do the job.

Chimney mortar repairs in Greenwich CTDamaged Mortar Joints

Damaged mortar joints can compromise your chimney’s structural integrity and lead to misaligned bricks, chimney leaning, and eventual collapse. Spotting damaged mortar joints typically requires getting on the roof, but it’s worth the effort. Mortar joints become damaged by constant exposure to the weather and the freeze/thaw cycle that causes cracking.

Spalling Bricks

Spalling happens when water gets into the brick, natural stone, or concrete, causing the surface to peel or flake off. It’s a sign that your chimney is absorbing moisture, which is typical in climates that receive a lot of rain, snow, and ice. Spalling can lead to severe damage or collapse, requiring expensive repairs or a complete rebuild.

Cracked Chimney Crown

The chimney crown is the top portion of the chimney, and its role is to keep moisture out. If the crown is cracked, it could be letting water in, causing damage to the chimney’s interior components and spurring mold and mildew growth.

White Stains

White stains on the bricks are called efflorescence, and it’s more than just an aesthetic issue; it’s a telltale sign that water is getting into the chimney’s porous materials. Efflorescence is the process where salt rises to the surface of a porous material, forming a coating when evaporating water leaves salt deposits behind. While cleaning the stains makes the chimney look better, it doesn’t solve the underlying problem.

Rusty Firebox or Damper

Rust is never a good sign where metal components are concerned. If you notice that the metal parts of your fireplace are rusting, it means there’s excess moisture in the chimney. Furthermore, because water is present, there could be mold and mildew growth and damaged masonry materials.

Why You Should Hire a Pro for Chimney Repairs

It’s understandable to want to save money by doing minor household repairs yourself. However, chimney work should be left to the experts, and here’s why.

professional chimney company in Stamford CT


Professionals have the certification, training, expertise, and equipment to perform repairs, especially high above ground, safely.


Certified chimney professionals understand building codes and standards to ensure the work meets local regulations and is safe.

Professional Diagnosis

Another advantage to hiring an experienced pro is they can provide a thorough inspection to uncover underlying issues that an amateur might miss. This can prevent unwanted problems down the road that could lead to expensive repairs or dangerous situations like a chimney fire.


Reputable chimney professionals are insured to protect you and your property should something go wrong. If you attempt DIY chimney repair or use a local handyman, you’re on the hook for any damage incurred. Moreover, most licensed contractors guarantee their work, giving you peace of mind.

Hire the Pros at National Chimney Cleaners

When your chimney needs some TLC, trust the pros at National Chimney Cleaners for repairs. We’ve proudly served residents in Connecticut and New Jersey for over 20 years with prompt, professional work at fair prices. Our technicians are licensed, insured, and certified.

When it has to be done right the first time, you can count on us. Call us today to book an appointment at 800–631–6177.


Use an Experienced, Established Chimney Sweep Company!

Don’t take chances with uninsured, novice, roofers, unregistered business, no workman’s comp.
Our pros have to know what they’re doing when they put their heads up a chimney and to do that, chimney sweeps obtain specialized training and have years of experience in the field.