When it comes to getting interlock done at your home, you might think have a lot of questions. Questions like: What is interlock? What are the benefits of having interlock? What are the different types of designs I can have with interlock? How much does it cost to do interlock? And finally, how is interlock installed?
In this article, I’m going to go over how interlock is installed… or to be more exact, how interlock should be installed.
Step 1: Excavating the ground
Depending on whether the interlock is going to be for heavy loads (like in the case of driveways), we will have to dig deeper than
Step 2: Filling in the hole with compactable stone
To simplify the pro. We actually use two types of stone, first a layer of 3/4 inch crush roughly 3 inches of crush and 1 inch of HPB (7 inches of crush and 1 inch of HPB for driveways).
Step 3: Tampering the crush and HPB
While filling the crush and HPB, we will go over the whole area several times with our Tamperer. While crush and HPB stone are self-compacting, tampering is still a crucial process to make sure your interlock pad stays even and flat through the years.
Step 4: Grading
This is where we make sure the surface is even. This step is important because it will determine how even your finished pad will be.
Step 5: Laying the stone
The next step is to lay the stone. There are different patterns and designs available and the variations are endless. As for the step itself, this part is pretty straight forward.
Step 6: Polymeric Sand
The last step is to put in the polymeric sand. This is the sand that fills into the gaps and further locks the pad together.