Leonard & Sons Chimney & Masonry

Leonard & Sons Chimney & Masonry Chimney Sweeping, Masonry Restoration, Dryer Vents Cleaning, Relining Chimneys, Resurfacing Fireplace

Leonard and Sons is a masonry restoration company specializing in all aspects of your chimneys functions and repairs or rebuilding. We also specialize in dryer vents with the focus on proper function and fire prevention. We are a fourth-generation family-owned business that has been serving the community since 1966. With almost 60 years of experience, we have become a trusted name in the industry,

providing top-quality chimney sweeping, masonry restoration, dryer vent cleanings, chimney relining, fireplace resurfacing, and more! We were originally founded in 1966 by Leonard and Dolores Martinez. After 20 years of Leonard working for Chicago's top tuckpointing companies restoring such historic buildings as; Wrigley Building, Tribune Towers, Merchandise Mart, The Board of Trade and countless others, Len and Dolores decided to venture on their own, focusing their business in the Northwest Suburbs. Leonard and Sons was built on the philosophy of treating the client in an honest and fair manner stressing quality over quantity. In 1988 Len and Dolores retired and passed that tradition on to Rich and Pam Martinez who owned the business until 2022. They ran day to day operations with their son, 3rd generation, Caleb Martinez. With over two decades in the industry, Caleb took over as President of Leonard and Sons in 2022. He is a CSIA Specialist, and was appointed Vice President of the Wisconsin Guild of Chimney Service Specialists in 2023. Our team at Leonard and Sons is made up of highly skilled and experienced professionals who are committed to providing the best possible service to our customers. We use the highest quality products and techniques to ensure that every job is done right, and we take pride in our workmanship and attention to detail. On top of the decades of experience, we have enhanced the business by obtaining Certifications in multiple areas of chimney functions and dryer vent safety stressing the importance of continuing education to stay current with constant new findings. We continue to maintain our high level of customer satisfaction through respectful concern for each and every client.

04/10/2026

Stack, when you’re feeling better, you’re hired if you want the job! We’re always looking for gooood booooyys!!! 🥹

For your convenience, chimney services just got a whole lot easier with our brand new drive-thru service! Pull up with y...
04/01/2026

For your convenience, chimney services just got a whole lot easier with our brand new drive-thru service! Pull up with your chimney, and we’ll do the rest.

Happy April from Leonard and Sons. 😉

There are easier ways to shop for a new chimney! Give us a call before things get…creative.847-658-7659
03/29/2026

There are easier ways to shop for a new chimney!
Give us a call before things get…creative.
847-658-7659

You’ve probably seen people talking about trees cracking or “exploding” during this cold snap.It happens because moistur...
01/23/2026

You’ve probably seen people talking about trees cracking or “exploding” during this cold snap.

It happens because moisture inside the tree freezes and expands when temperatures drop fast.

Brick chimneys deal with the exact same thing.

Brick and mortar soak up water. When it freezes, it expands. That expansion causes cracking, spalling, and mortar breakdown. Especially if the chimney already has small issues.

Cold weather doesn’t usually cause chimney problems. It makes existing ones worse.

If your chimney has cracked mortar, missing caps, or water getting in, this kind of cold can do real damage.

That’s why we push inspections and small repairs before they turn into big ones.

Go Bears! 🧡💙🐻⬇️That’s Grandpa Leonard working high above the city! Chicago built us, and we’ve been building Chicagoland...
01/18/2026

Go Bears! 🧡💙🐻⬇️
That’s Grandpa Leonard working high above the city! Chicago built us, and we’ve been building Chicagoland ever since.

A reminder as to why late winter/early spring inspections are so important!This chimney is still structurally sound, but...
01/07/2026

A reminder as to why late winter/early spring inspections are so important!

This chimney is still structurally sound, but the photos show clear signs of moisture moving through the masonry. The white, chalky residue on the brick and mortar is efflorescence, which happens when water travels through the chimney and leaves salts behind as it evaporates. The dark staining near the top and the small cracks and separation in the mortar joints are typical of freeze-thaw damage over time, especially in our climate. None of this points to an emergency, but it does mean the chimney is at a stage where maintenance matters!

With proper repairs like addressing the mortar, crown, and water entry points, this kind of wear is very manageable and helps prevent much larger and more expensive problems down the road.

Seeing white, powdery stains on your chimney? That’s efflorescence, a sign that moisture is getting into the masonry. Wh...
12/05/2025

Seeing white, powdery stains on your chimney? That’s efflorescence, a sign that moisture is getting into the masonry. While the salt deposits themselves aren’t harmful, the moisture behind them can lead to cracking, spalling brick, and larger structural issues if not addressed.

If you notice this on your home, it’s time for a chimney evaluation. We’ll inspect the cap, crown, flashing, and masonry to find the source of the water and recommend the right repairs to stop it from happening again.

Moisture is the number one cause of chimney deterioration. Catching it early makes all the difference.

847-658-7659

Your safety depends on who you hire! We want to make our community aware of an increase in fraudulent companies posing a...
12/03/2025

Your safety depends on who you hire!

We want to make our community aware of an increase in fraudulent companies posing as legitimate chimney professionals (online AND alarmingly in person in our communities) to scam homeowners. We can only assume this extends into other industries as well. We also ask that you please share this post to help protect friends and family from falling victim to the increase in these types of scams.

We’ve seen a number of instances over the past couple of weeks, and figured we’d give you examples so you can see how sneaky these scams can be!

Last week, we met a new customer who had paid another company for what she believed was a full chimney sweep. The company only cleaned a small portion of her chimney, then attempted to charge her additional fees to finish the job. She believed she was receiving a professional sweep at the quoted rate, yet she was intentionally misled into a partial cleanup designed to upsell her afterward.

These practices are not only unethical, they can create serious safety risks for homeowners. A partially cleaned chimney can still lead to chimney fires and dangerous structural issues, while fraudulent inspections often leave hazards unreported. The picture attached is everything we cleaned out of her chimney after the other company left.

Unfortunately, this incident is not isolated. Last week, a homeowner contacted our office to follow up on when we would be arriving to perform their work. The problem: they had never scheduled service with Leonard & Sons. After an internet search, she reached out to another “chimney company” who provided her with a verbal estimate. They went out to her home, and told her they would “subcontract the work” to us. Then they took her deposit. This scammer even spoofed our business phone number to make their scam appear legitimate.

After explaining to this homeowner that we do not subcontract for any chimney or masonry companies, we urged her to immediately contact her bank to stop payment, and file a police report. She reported that the individuals who came to her home were driving unmarked vehicles with no business signage, and there was no written contract of any kind. These are major red flags.

We found the website for their “business”, and there is no such entity registered with the state of Illinois. These illegitimate websites can look very realistic. This one happens to be called “Ash and Flames Chimney Sweep”.

We don’t know if it’s the same people, but a number of weeks ago our office was getting repeated calls, and when we called the number back they answered “Leonard and Sons” and then hung up when they found out it was us calling. That number has since been disconnected.

It’s no surprise that someone would want to use us as a cover for their scam. We are a small family business, with a reputable and trustworthy name in the industry, and we are so disappointed to have our good name used in an attempt to scam homeowners in our community.

Caleb is a 3rd generation chimney sweep who is nationally recognized in his industry, a National Chimney Sweep Guild instructor, and the President of the North Central Chimney Guild. Safety and integrity mean everything to us, and our family owned business. It’s what has kept our business running strong for nearly 60 years.

If you ever get the sense that something feels off, please hang up and call our number directly to confirm you’re actually speaking to Leonard and Sons. We have two amazing women who work in our office to answer your questions. All of our trucks are clearly marked, and our sweep technicians are CSIA certified!

Sadly, there are plenty of people out there who are willing to take advantage of you and your family, especially around the holidays. Please share this message with friends and family, especially older family members who are far too often the main targets of these types of scams.

Thank you for reading. We hope you have a safe and peaceful holiday season!

Happy Thanksgiving!Our Leonard’s family is especially grateful for you, our customers, who trust us with your homes.We’r...
11/27/2025

Happy Thanksgiving!
Our Leonard’s family is especially grateful for you, our customers, who trust us with your homes.
We’re also deeply thankful for our hardworking team who helps us carry our family-owned mission of exceptional work and integrity forward every day.

We completed this beautiful chimney rebuild last week! Strong, timeless, and built to last. That’s a Leonard & Sons fini...
11/12/2025

We completed this beautiful chimney rebuild last week! Strong, timeless, and built to last. That’s a Leonard & Sons finish.

11/06/2025

To us, family means everything. Keeping your home and family safe with a quality-built fireplace has kept our family in business for nearly 60 years. Thank you for trusting our family with your home.

Address

1201 W Algonquin Road
Algonquin, IL
60102

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

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