Foam Insulation Board For Basement Walls - The cracks in the basement wall will not normally weaken the structure of your base, but they may cause other difficulties namely, water problems.
If it rains out, especially in the event that you don't have clean and functional gutters, a lot of the water builds up against the exterior of your basement wall. Unless you get regular basement wall fix to keep those cracks closed, some of the water will enter your basement through those cracks. Even if your basement has a waterproofing membrane on All the exterior walls, a significant enough crack can tear or even shred the membrane and then you're in trouble all over again.
Most such cracks can be fixed from the inside in a timely and cost-effective fashion that does not disturb the soil or what remains of the watertight membrane on the exterior.
The perfect method to execute the basement wall repair is by injecting an expanding liquid urethane foam into the crack. When the liquid experiences water, then it expands dramatically, forcing the foam down and up, inward and outward across the whole length and thickness of the crack. It dries and becomes watertight in minutes, sealing the crack perfectly. Since it begins as a liquid of about precisely the same viscosity as water, then it is going to go everywhere that the water goes. Since it ends up a foam, it's relatively easy to cut off and, if needed, sand down any of the foam which expands inward however usually, that's not a large issue.