Replaced an asphalt driveway with concrete. Removed all the old asphalt. Increased the width from 20 to 22 x 38. 5.5 thick, #4 rebar on 16" centers. Widened to 24 feet at the street. Found wet clay under part. Dug out clay and replaced the base with crushed recycled concrete. Compacted the base. The next day did the concrete pour. John uses MN DOT 4500 mix - same as on state highways. They sprayed a curing agent when it was set. The day after that another crew came and cut expansion joints in the driveway. They used snap lines to mark the cuts. All the cuts are perfect, straight and professional. Four weeks later they returned to spray a concrete seal on the driveway. They waited for 4 weeks to allow me to keep it covered with burlap and wet. I was there watching for the entire job. John was able to get the job done a few days earlier than scheduled. The weather was with us. Excellent crew. Friendly, competent, skilled, and very hard working. Knew what they were doing. The digging out of the wet clay area was not in the original contract, but the extra cost billed was very reasonable. The finish work was done with care and an artist's touch. The broom finish and saw cut expansion joints look great. I decided to keep the driveway wet for 28 days - by covering it with burlap held down by 20 2x4s. I watered it several times a day to keep the burlap wet. At night when I woke, I would turn on a sprinkler for half an hour. Concrete reaches 75% strength in 7 days and 100% in 28. By keeping the surface covered and wet it was able to cure evenly. A MN DOT engineer lives down the street and stopped to complement me for doing it right by covering it with burlap and keeping it wet. The state can only get by with 7 days and 75% strength. I bought the burlap in 5 x 60 foot rolls on Amazon. 3 rolls for $175.00. I overlapped the seams by a couple inches and held it in place by laying twenty 8 foot 2 x 4s over it. Wind wasn't a problem because the burlap was wet the whole time. I let it dry out in the sun the last day. I then put it in plastic boxes for reuse in the future. John and his crew are the best. Hire him. I got 4 quotes from Angie's List. Two were way high and one was a couple hundred dollars less than John's. But when I talked to John I had confidence in him and his ability and I decided to hire him. It's nice to be happy with a decision. It's even better to have a driveway that I almost look forward to snow blowing this winter. The old asphalt had sink holes I would slip in. This driveway will drain well. The bad clay base is gone and there is 6 plus inches of recycled crushed concrete under the 5.5 inches of new concrete. I couldn't be happier. I had an idea of drilling into the garage floor to pin it to the new concrete. A house down the street had done this with a new driveway a few years ago. John explained why he never does this - it has the potential to lift the garage floor and damage it. I followed John's advice. The other potential contractors were willing to do this. John's experience was very helpful in planning the work. He knows what he is doing. You can rely on him. He suggested burlap. I was going to use plastic. Hire John - Cornerstone Concrete - then keep the concrete wet and covered with burlap for 28 days after. Any concrete expert, including John, will tell you it's the right thing to do, but hardly anyone does. This driveway will last and is perfect two years later. read more

Cornerstone is a fantastic company in every respect! John, the owner, his sons and other field staff, as well as the staff in the office are gracious, friendly, efficient and willing to go the extra mile to make sure that expectations are exceeded. We made several adjustments in the shape of the edges of our driveway and although I cannot remember the name of the young man who was here that evening, he stayed (while laying rebar as well) and made those adjustments with enthusiasm and great expertise. He went way beyond the call of duty to make sure that we were happy with the final product. We have very difficult drainage issues on our property as there is minimal change in grade; John made sure to discuss this and offer alternatives if in the future we had problems with pooling water. We paid for the finished project in several payments (rather than one large one), which the company allowed without question. And speaking of the final product, it is absolutely gorgeous - we could not be more satisfied! People stop regularly to ask us who did the work, or simply to let us know how beautiful our property looks! We are grateful and extend our thanks to John, Terissa, Kyle, Levi, Sarah, and the whole crew! read more

In August they replaced the concrete driveway, garage floor and front walk of my home built in 1960. I interviewed three contractors and Cornerstone stood out because they were knowledgable about home/garage construction and John and Kyle clearly explained how they would fix the issues of my 56 year-old home. In the first day, the work team removed all the old concrete, packed the ground, and put the forms in place. The second day the concrete was poured and smoothed. We had three gigantic concrete trucks on our street at one time but everything was well-coordinated. Now, almost 6 months later, there's no cracks, I have a warranty, and I get compliments on my driveway's appearance with its nicely-done border treatment. I have no reservations about recommending this group as excellent and great to work with. read more

what a great experience working with john and sons etc. all very helpful, considerate and easy to contact. i love my new driveway. we had two storms last spring which flooded our finished basement twice. once the driveway was in i would stand by the corner of the house and watch all the ground water, go down the middle of the driveway and into the street. i had to check it several times just to make sure i wasn't dreaming. this is the best experience i have had working with a contractor. i would highly recommend them to any one who has a difficult driveway or concrete problem of any kind. read more

A well oiled machine....from the estimator's visit to the final seal coat, every part of the process was done efficiently. Cornerstone has developed a routine where specially trained crews focus on each phase of the process. Estimating, tear out, layout, pouring, form removal, joint cutting and sealing. Communication was easy and responses to questions made in reasonable time. I was able to play a part in design and allowed to question and comment as work progressed. Best of all it was affordable. read more

A great crew that worked together so smoothly. We were so fortunate to come across their sign posted alongside a freshly poured concrete driveway a few blocks from where we live. I sure don't miss fighting the weeds in the old gravel driveway. The driveway is shared with the other owners in the twin home. The other owner originally preferred blacktop and I was able to convince him of the advantages of concrete. He is as happy with Cornerstone Concrete as I am. read more

I am so happy and pleased with my new driveway. John and his team did a great job! I called for an estimate and John came out right away. The crew showed up on time and completed the job early. They were friendly, polite and worked together very efficiently. They took the time to make sure they didn't damage any plants or landscaping in the surrounding area and left no trace they were even there. Definitely recommend Cornerstone, very satisfied! read more

I am beyond pleased with corner stone concretes work from beginning to end. they were respectful and responsive both in person to what I wanted and in communication with their online system they use for communication. The online calendar was excellent to keep me up to date. every person who stepped on my property was respectful and positive and communicated directly with me. And the driveway which is rather large, looks amazing. read more

In October they replaced the concrete driveway, and sidewalk. John, the owner, his sons and the rest of his crew are seriously the best! They are prompt, friendly, polite, and stand by their workmanship. In the first day, the work team removed all the old concrete, packed the ground, and put the forms in place and laid there first truck of concrete. They came back the next day to finish the job. Jerry J. read more

Cornerstone Concrete put in a new driveway and adjoining sidewalk for us two years ago. The driveway and sidewalk look great! We found the staff at Cornerstone excellent to work with in all phases of the project, from the estimate through completion. They were very professional and answered all our questions thoroughly. I would recommend Cornerstone Concrete for your next concrete project. read more

As many others have mentioned - John and the crew at Cornerstone are the best in the business, very professional, great to work with, and are now my first and only choice for concrete needs. They installed my driveway, sidewalk, built a block wall to patch in the foundation of my house, and removed/re-poured my garage slab. I cannot recommend them enough. read more

I had Cornerstone Concrete pour my driveway instead of the builder providing the service. Using Cornerstone Concrete saved me at least $1000. I spoke to John on several occasions and he was very knowledgeable and professional. I didn't see the work being done, but I am very happy. If I ever have another concrete job I will definitely call Cornerstone. read more

We've used Cornerstone concrete for our boat ramp (which was very difficult to do because of a very steep incline), our boat house, our new garage, sidewalks and a massive, fantastic looking driveway. Their craftsmanship enhanced both the value and appearance of our property. They do a good job and stand behind their work. We recommend them highly! read more

We're very pleased with the final product, although it hasn't been through a Minnesota winter -- so we'll know more later. The only reason we didn't give it five stars was we ran into some preliminary problems. White Bear Lake requires a driveway permit, and Cornerstone went ahead without first securing one -- this procedure took about ten days. read more

We worked with Cornerstone to complete our driveway and sidewalks last summer. They were impeccably professional, on time, and thorough in their work. The craftsmanship was excellent leaving us with a terrific product. The price was fair and it felt great to work with a family run business. read more

Cornerstone Concrete delivered as promised. They kept in touch with me thru the whole process. As each team came out to the house, they came to the door and introduced themselves and what they would be doing. Any questions I had were promptly answered. Only good things to say about them read more

Cornerstone Concrete did an excellent job with our driveway. I am very happy with the work they did. In one day to remove the old concrete and back the next day to pour the new concrete driveway. I couldn't be happier. I have the best driveway in the neighborhood! read more

Best in the business and Stillwater area. Friendly, timely, efficient, and reasonable. They installed a garage floor; driveway apron, sidewalk, and stoop in decorative stamped concrete. They do a broad variety and it all looks great and is sloped perfectly. read more

Pretty okay, but I had asked for something slightly nonstandard and I had to intervene to make sure I got it as they were doing it differently than we had discussed. Within 2 years a crack had appeared in the sidewalk and I;m going to need to replace it. read more