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Top-Rated Masons in Ontario - Updated Nov 2026

Avatar for American Waterworks
American Waterworks
4.5(
173
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RepairConcrete Foundation - Raise

Serving Ontario, WI and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"I had a great experience from start to finish. I had four different foundation companies look at the large crack in my foundation. Two said to put epoxy in it and I would be good. The third offered a slightly more involved fix that would not address the root of the problem. American Waterworks was different from the start. First of all, they book a three hour appointment so they can fully investigate, measure and explain exactly what is happening and what needs to be done to truly fix the problem. The level of knowledge and expertise shown by the the Design Specialist, Chuck, was astounding. He even predicted that there would be at least one if not two more cracks in the foundation we could not see and their location and he was right on both counts. I ended up needing 10 helical piers and 7 helical anchors to repair the foundation and stop it from rotating backwards toward the hill and to stabilize and lift the foundation back to its original position. The three man installation crew was incredible. Jose the Foreman, Luis the Co-Foreman, and Jose the Production Specialist were extremely hard working, knowledgeable and always willing to take time to answer any questions I had about the project. Their level of professionalism, courtesy and attention to detail put me at ease during such a major undertaking and I always knew my house was in good hands. I can not recommend American Waterworks enough to anyone needing their foundation repaired."
Another Sinking Floor
Dirt Crawlspace in Elk Mound, WI
Concrete stoop had sunk over 6 inches
Foundation Failure Signs
Increased Efficiency of Crawlspace in Elk Mound

+156

Response time4 hrs
499 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Groundworks
Groundworks
4.3(
228
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RaiseConcrete Foundation - Repair+2 more

Serving Ontario, WI and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2005

Free estimates

Warranties offered

"Gregg and Gunnar did a fantastic job of lifting and sealing my garage floor. After 20 years of slowly failing, sinking, and cracking, they were able to get it back to an acceptable condition. It'll never be "flat" like freshly poured concrete but, it is so much better after their work. They took the time to explain the process and also any areas where they were unable to get the slab perfectly flat again, and they explained why. They were quick, cleaned up after themselves, and patiently explained the process and results"
Foundation
Foundation
Foundation
Foundation
Foundation

+16

179 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Shamrock Maintenance, Corp.
Shamrock Maintenance, Corp.
4.8(
5
)
Brick or Stone - Tuck-pointingBrick, Stone or Block Wall - Repair

Serving Ontario, WI and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

Shamrock Maintenance Corp is a professional chimney service company dedicated to helping homeowners maintain safe, efficient, and well-functioning chimneys. We specialize in chimney inspections, cleanings, repairs, and preventative maintenance, with a strong focus on fire safety and long-term home protection.\n\nOur team is known for providing honest recommendations, clear documentation, and straightforward communication so homeowners can make informed decisions without pressure. We work with both modern and older homes, including historic properties, using appropriate methods to protect the structure and integrity of each home.\n\nWe proudly serve our local communities by prioritizing safety, quality workmanship, and reliable service. At Shamrock Maintenance Corp, every home is treated with care, professionalism, and respect.

Chimney Project
Chimney Project
Chimney Project
Chimney Project
Chimney Project

+10

Avatar for Custom Craft Environmental
Custom Craft Environmental
4.6(
117
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation Drainage - Install or Replace+1 more

Serving Ontario, WI and surrounding areas

In business since 1991

Emergency services offered

Credit card accepted

"The insurance company hired another remediation company on our behalf, but I contacted Rich for another estimate/opinion. Rich provided me advice via phone on multiple occasions, told me what to look for and assured me that the other company was following industry standards. Ultimately Rich came to our house to potentially provide us with an estimate on the rebuild portion of the remediation. Although we could not use Custom Craft Environmental for this project, I would recommend them to anyone and would definitely use them in the future, based on Rich's knowledge, responsiveness and professionalism."
Additional Photos
Additional Photos
Additional Photos
Before
After

+1

Recommended by94%of homeowners
Avatar for Nicholas Palm Tile and Stone
Nicholas Palm Tile and Stone
4.8(
4
)
Brick or Stone - Tuck-pointingBrick or Stone - Tuckpointing - For BusinessBrick or Stone Siding: Install or Completely Replace+3 more

Serving Ontario, WI and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"It was great i was told by nick he would be at my place at 12 pm and he actually was 15 min earlies he set up my whole garage to work on cars exactly how i wanted and imagined he even built my work bench so it collapses into the wall like i wanted and put outlets in it as well he was reasonably priced and didnt rape me with labor i am having him come back this spring to redo my deck as well he was professionable and knowledgeable"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Recommended by100%of homeowners
M & L Masonry and Home Improvement
New to Angi
Brick or Stone - Tuckpointing - For Business

Serving Ontario, WI and surrounding areas

In business since 2022

Free estimates

Emergency services offered

M And L Masonry And Home Improvement is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time12 hrs
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Masonry FAQs, answered by experts

You may not need a hammer drill if you’re planning on drilling one or two very small diameter holes in brick. For holes with a diameter of 3/16-inch or less, a regular drill with a masonry bit can do the job. However, the bit will heat up quickly, and the process will take significantly longer than with a hammer drill. Prepare to cool your drill bit down in a bucket of water more often.

Mortar and thinset both serve the same purpose—tile adhesion—but have different compositions and use-cases. Thinset is heatproof and presents a wide range of possibilities due to the added polymers. Mortar is typically used for bonding stones and brick. Thinset is rarely used outside, while mortar is rarely used inside.

According to the Earthquake Country Alliance—a public and private alliance in California that works to improve earthquake and tsunami readiness—reports that unreinforced masonry, such as stone, bricks, and hollow clay tiles, is more susceptible to earthquake damage. The mortar between bricks isn’t as stable as other building materials and methods.

You should clean your home’s brick once per year. This applies to exterior brick, but also to cleaning brick fireplaces. Create a homemade cleaning solution with equal parts vinegar and water. Use a soft-bristle brush to scrub the solution into the face of your brick and remove dirt, algae, and stains. Cleaning will protect brick from damage and boost your home’s curb appeal.

In most cases, painting your brick house is a fine idea that can open up new aesthetic possibilities. However, the paint can slightly shorten the life span of brick, especially if moisture gets trapped underneath the paint layer. Once you paint, you’ll have to keep up with maintenance to avoid flaking and blisters.

The Ontario, WI homeowners’ guide to masonry services

From average costs to expert advice, get all the answers you need to get your job done.