Look for another contractor. They likely don't do the work they are supposed to and don't honor their warranty. Here are all the issues I have with the work they did: Interlock: 1) they were supposed to raise the grade by 5-6 inches to avoid the need for a half step that was there before. They didn't raise the grade even 1 inch and instead went ahead and installed an extra step and didn't even say anything to me about it. I saw it after they had left 2) in the quote I had specifically asked that they put down 1 foot of base gravel in line with unilock technical guide and they even charged me extra for it. When I dug a couple of post holes after they finished putting in the base, I noticed there was only about 6 inches if not less. 3) before putting down the base material, the same unilock tech guide says that a permeable weed barrier fabric should be put in which helps prevent spread of the base material. They did not do this 4) when they finished, they left quickly and didn't finish putting in the polymeric sand on all the sides and had no intention of coming back to do it until I called them. 5) I have 2 semicircular window wells where the interlock was being installed. When the owner, Giorgio, came to quote me, he forgot to note the window wells so after a follow up call, he drew them as rectangular. When the guys showed up on site, they were confused by this even though I explained to them multiple times that they were never supposed to be rectangular. After a lot of back and forth I agreed to do a modified rectangular design which they then completely ignored and did the same thing they mentioned at the start. It looks ugly. Asphalt: This was the one thing I was happy with because initially it looked great. I even kept the car off the new driveway for a month (way longer than they suggested was needed) to ensure it cured sufficiently to avoid any tire marks. After parking on it for about 1 month, there was already a small crack in the middle of the driveway. They guy they sent out to take a look decided within 2 seconds that it was caused by tree roots and therefore not covered by the warranty. A quick Google search shows that tree roots are not the cause of driveway cracking if the tree is more than 5 feet away. The closest tree with any significant roots is 20 feet away. It also didn't seem to matter to him that the neighbors driveway (done by them at the same time) also had a crack about 30 feet away from the one on mine. There were other things that made no sense for it to be caused by roots but he would not budge and his solution to fixing it was to put some polymeric sand in it. I am no expert but I have never seen any cracks on city roads or other people's driveways with polymeric sand in it...but it sure is a cheap way to get out of doing a proper fix. In terms of customer service, the office staff and the excavation/asphalt crew were very courteous but the interlock crew barely spoke any English and was very difficult to interact with. Based on my experience, they'll do a job for a competitive cost but they won't do it right.

Approximate cost of services:
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Company Response

Hello RD,

We were shocked by your review and we are sorry that you feel this way. The pictures of your project look beautiful! When we sent Bruce to inspect your original tree root concern, you did not make mention of any other concerns to him. You live in a neighbourhood made beautiful by an abundance of mature trees. It is simply not true that they can only cause cracking less than 5 feet away. In fact, tree roots extend 2-3 times the width of the dripline.

35 years ago, we developed our warranty using the Ontario Ministry of Consumer and Commercial Relations guidelines for residential paving. In their brochure "A Guide to Residential Driveway Paving", it states that a good contractor should offer a one year warranty and they state "Contractors cannot be held responsible for damage caused by such things as tree roots, oil or gas spillage, high heels, ladders, lawn chairs or bicycle kickstands."

Although your tree root issue is not covered by any industry warranty, as a gesture of goodwill we indeed offered to repair it for you. At the moment it is only a hairline crack and too small to treat but if it becomes larger we have already offered to repair it. It can be filled with a rubber crack filler if you prefer but we find it unsightly and the polysand is more discrete. We can use the crack filler if that is your choice.

You questioned our expertise on diagnosing tree-roots. We made you the offer of cutting out the area and excavating the base and subgrade to investigate and expose the root but clearly there would be a cost associated with it if tree roots are discovered. Tree roots are a very sensitive issue and if they are to be cut, an arborist report must be submitted to the City beforehand to ensure the health of the tree won't be affected.

With regards to your further concerns about the depth of base materials on your patio, you must have dug your fence posts prior to our team installing the stonework when the sub-base only was installed. The final bedding layers are installed along with the interlocking stone.

The stone on your contract for the window wells was chosen to match the step and it is a new linear stone design trend and not meant to curve.

We will call you and set up an appointment for you to address your further concerns with Bruce and you can discuss it with him.