About Slab-Jack Kings: Manitoba & Northwestern Ontario’s Polyurethane Injection Experts
At Slab-Jack Kings, our journey from a family farm in Southeastern Manitoba to a leader in eco-friendly construction solutions is a testament to our commitment to sustainability and community. Rooted in three generations of farming, the Lenchyshyn family transitioned from agriculture to the construction industry, founding Cold Country Spray Foam and its concrete lifting division, Slab-Jack Kings. This shift was driven by a desire to provide cost-effective, environmentally conscious alternatives to traditional construction practices.
A Proud Family-Owned Business
The Lenchyshyn family proudly owns and operates PWSF INC. (Slab-Jack Kings & Cold Country Spray Foam). What began as a small, family-run venture for Tim and Grace with their son Christopher quickly grew as demand increased. As the business expanded, their son Jeremy and daughter Amy joined the team, strengthening the company’s foundation with a shared commitment to quality and innovation.
Top (L-R): Grace, Amy, Tim. Bottom (L-R): Chris, Sonya, Jeremy
Today, our family continues to grow and evolve, expanding our services while maintaining a dedication to eco-friendly construction solutions. With a focus on sustainability and efficiency, Slab-Jack Kings is a trusted leader in Canada’s green building movement, providing high-quality, environmentally responsible products and services.
Our Family’s History – From Farming to Innovation
Our family’s roots run deep in Southeastern Manitoba, where three generations made their living through mixed farming and food production & Northwestern Ontario. For decades, we dedicated ourselves to feeding our community, embracing the values of hard work, resourcefulness, and sustainability.
As times changed, so did our vision. Tim & Grace made the decision to transition from agriculture to a new industry, applying the same principles of dedication and innovation to a family-owned business. What started as a family farm has now evolved into a thriving construction solutions company, committed to eco-friendly practices and long-lasting results.
From Residential Steps to Municipal Infrastructure—We Lift It All
Canadian farmers spend their entire working lives looking for ways to cut costs and maximize efficiency—a mindset that naturally led us to where we are today. At Slab-Jack Kings, we help residential, commercial, industrial, and agricultural clients save up to 85% compared to the cost of replacement.
From driveways, sidewalks, garage floors and pool decks to warehouse floors, barn floors, loading docks and municipal infrastructure, we lift it all. Our exclusive 25,000 PSI high-density foam provides superior stability, insulation, and a moisture barrier for any slab. We specialize in the unique “Red River Gumbo” soil challenges of the Prairies and provide durable sunken concrete repairs backed by a 10-year warranty on our lifts.
Before & After Slab-Jack Kings:
Lifting a Concrete Shop Floor With Radiant Heat Lines
See how we raised a settled radiant-heated shop floor using polyurethane foam injection, with careful mapping prior to drilling to protect the heating system within the slab.
Sidewalk to Front Entrance – Before & After Concrete Lifting in Amber Trails, Winnipeg
See how we raised and stabilized a sidewalk at a front entrance in Amber Trails, Winnipeg using polyurethane foam injection. View dramatic before and after photos—corrected settlement, improved winter safety, and restored safe, level access to the home.
Commercial Concrete Sidewalk Lifting – Before & After at Wok Box Entrance in Tuxedo Industrials, Winnipeg
Watch how our team eliminated trip hazards and stabilized fractured slabs for the high-traffic sidewalk at the Wok Box entrance in Tuxedo Industrials, Winnipeg, using advanced polyurethane concrete lifting techniques and custom reinforcement.
Driveway Levelling in East Saint Paul, MB – Before & After
See how Slab-Jack Kings restored and leveled a settled driveway and garage approach in East Saint Paul, Manitoba. Our polyurethane foam concrete lifting, leveling and void fill service corrects uneven concrete and improves drainage—view dramatic before and after results!
Concrete Sidewalk Void Fill – Before & After at Silver Heights Condo, St. James, Winnipeg
Our expert team filled a large 5–6 inch void beneath a condo sidewalk in Silver Heights, St. James, Winnipeg using polyurethane foam injection—restoring stability, safety, and protecting the property for years to come.
Sidewalk Concrete Lifting – Before & After in Transcona, Winnipeg
See how our team raised and leveled a sunken sidewalk to the front entrance in Winnipeg by up to 4 inches. This dramatic before & after concrete lifting transformation eliminated trip hazards, restored safe access, and improved curb appeal for this residential home.
Slab-Jack Kings Reviews
With over 200 five-star Google reviews, Slab-Jack Kings is one of Manitoba and Northwestern Ontario’s most trusted settled concrete repair companies.
Homeowners, businesses, and municipalities choose us for our clean job sites, honest recommendations, and long-lasting results.
The slab is level and looks great! I’m hoping it stays level for years to come.
From the initial inquiry to get an estimate back in February where they reached out promptly to let me know I’m in their queue once the ground was ready for inspection. To when Tim and his wife came out to provide their estimate and explained in great detail their process and how they started their family run business. To Amy coordinate the scheduling to get the job done and finally to Chris and his crew doing the actual work and explaining their process as they were doing the work and not to mention how they cleaned up nicely post work. Oh and the digital process they used for issuing the agreement and payment options which was very convenient!
I got estimates from 3 other slab jacking local companies that uses polyurethane and Slab Jack Kings by far resonated with me most! The other two just seemed not very interested in convincing me why I need to go with them and to me this is important.
Now regarding the traditional “mud jacking vs polyurethane foam”… Well my neighbour got his driveway lifted last summer with that famous Winnipeg mud jackers” and it’s already sunk about 3/4 of an inch. Sure it’s more cost effective but that was not for me.
I have friends and co-workers who recommended going with polyurethane foam and all 4 of them have said their driveway has not dropped much at all. One of them said they’re dropped maybe 1/4 of an inch and has held up for the last 6 years.
Oh one more thing. Of the companies I looked into for polyurethane lifting, Slab Jack Kings had the longest warranty term of 10 years. I value that as well!
Thanks again Slab Jack Kings!!!
Our small town had lots of supervisors when this truck, trailer and crew showed up. The guys were friendly and answered ALL of their questions. I wld recommend Slab Jack Kings to anyone needing a driveway lift.
Thanks to Tim also, showed up to measure and provide quote. All other companies were just asking for pics and provided estimates. Tim from Slab Jack Kings showed up...and that is worth alot right there.
Thx guys!
The Stinsons
Slab-Jack Kings helped me to pump for settling in 2020 which was four years ago.
This year, I contacted them and they told me that my situation is still covered by the warranty. Today they get the work done with quick and professional manner. I really appreciate to work with honest company like them. I will definitely ask help from they if there are something wrong with my basement again in the future.
For my project, foam jacking was the best option: it was faster, less invasive, and much cheaper than mud-jacking or replacing the whole slab.
I'd definitely recommend this company if you have a slab or sidewalk or something that's off kilter. Everyone I dealt with was excellent and all aspects of the project were clearly communicated.
Thanks!
Chris and Jeremy arrived on time, and were very professional. Chris verified the work with my husband Jeff before starting. They did a fantastic job of leveling our patio and sunroom pad, raising it over 3 inches in one area. Cleanup was exceptional, no mess left.
Would definitely recommend this company!
4 years ago: Chris did a good job setting expectations and advising me of the jacking process. He completed the job only about a month after the estimate, and at the quoted price.
I did a bit of research before going with foam jacking over mud jacking. A couple of the reasons I went with foam jacking were weight, strength and durability. I would recommend Slab Jack Kings.
They advised us throughout the process of what would happen doing a lift of 7 inches. When the floor of our attached garage presented with some unforeseen circumstances, they advised us of the issues and presented options for us to choose from. The before and after photos were great to receive.
We would have no hesitation to refer our friends and family to Slab-Jack kings for the concrete lift jobs.
The work itself was great. I can hardly see the holes that were drilled to inject the urethane mix.
Finally after only three days, several of my neighbours have come by to look at the job and are interested in contacting this company for more information.
A fine family owned Manitoba company.
Serving Manitoba & Northwestern Ontario
Ready to restore your concrete? Whether you need concrete lifting & levelling, void filling, or underslab insulation, our team at Slab-Jack Kings provides fast, professional estimates across Manitoba and Northwestern Ontario. We’ll inspect your concrete, explain your options, and give you an honest, no-obligation estimate.
Contact us at 204-509-3501 , [email protected], or text us by using the chat bubble on the bottom right hand side of this page for more information. Please fill out an online estimate request form to get your free concrete repair estimate scheduled today.
NOTE: To ensure we can give every client our full attention, visits to our Niverville office are strictly by appointment only.