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Top-Rated Masons in Ontario - Updated Nov 2026

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

183 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Tri-State Basement Repair and Waterproofing, LLC
Tri-State Basement Repair and Waterproofing, LLC
3.2(
50
)
Foundation Drainage - Install or ReplaceConcrete Foundation - RaiseBasement Drainage Channels - Install

Serving Ontario, WI and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"They were on time, they were friendly and explained what they were doing and the job was difficult and challenging and they returned to get it done. It was a 2 day project that turned into 3 and they even came to work on it on a Saturday."
Response time6 days
23 neighbors recently requested a quote
Recommended by88%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 American Waterworks
American Waterworks
4.5(
173
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RaiseConcrete Foundation - Repair

Serving Ontario, WI and surrounding areas

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
508 neighbors recently requested a quote
Recommended by91%of homeowners
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
Showing 1-10 of 28
Masonry FAQs, answered by experts

Always work with licensed and certified masons in your area when installing a stone wall or even a stone veneer. Just like all home designers, they should provide an impressive portfolio and offer a free estimate for the project. Pick the pro who fits your budget and schedule and, most importantly, helps you realize your landscape vision.

Stone houses used to be much more practical, but with the advent of stronger and cheaper materials like concrete, they aren’t seen as much anymore. There are some parts of the world where it makes sense to build with stone, and they are usually next to a stone quarry. Stone is, however, very weather-resistant, which is why many homes near the sea and on mountains are still built with local stone.

Cobblestone can be made from many different types of stones but the most common ones, by far, are granite, basalt, limestone, and sandstone.  If you are laying a brick paver patio or other such project, the medium is different. It’s rare, but cobblestone can also be made from marble, slate, jasper, and other types of rock. Technically, you can make cobblestone from almost any type of rock, but if it is weather-resistant and stands the test of time is another question entirely.

Yes, brick walls often add value to a home. For starters, many people love the look of brick walls, so they can enhance your home's aesthetic appeal and add warmth to your property, especially when it aligns with the rest of your neighborhood's look. They also provide privacy and security, which can further increase the resale value of your home.

No, you don’t need to soak the brick before cutting it by hand. In fact, cutting a wet brick can make it harder to see your score lines and may cause the chisel to slip. Soaking is sometimes used with power tools to reduce dust, but for hand-cutting, it’s best to work with dry bricks for better control and visibility.

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.