Heating A Basement Apartment - The cracks in the basement wall will not normally weaken the structure of your foundation, but they will cause other problems specifically, water issues.
If it rains outside, especially in the event that you don't have functional and clean gutters, a lot of that water builds up from the outside of your basement wall. Unless you get regular basement wall repair to keep those cracks closed, some of that water will get into your basement through those cracks. Even if your basement includes a leaky valve on all of the outside walls, a significant enough crack can tear or even shred the membrane and then you're in trouble all over again.
Get Rid of the Crack with Basement Wall Repair - Most homeowners should immediately call a professional when they understand that there are traces of water leaking into the basement. Most such cracks can be repaired from the inside in a timely and cost-effective fashion that doesn't disturb the soil or that which remains of the waterproof membrane on the outside. Especially handy homeowners can even try it themselves, but it is not recommended unless you already know just what you're doing.
The best way to perform the basement wall repair is by injecting a growing liquid urethane foam to the crack. When the liquid experiences water, it expands dramatically, forcing the foam up and down, inward and outward along the whole length and depth of the crack. It dries and becomes waterproof in minutes, sealing the crack perfectly. Since it starts as a liquid of about precisely the identical viscosity as water, it will go anywhere that the water moves. Since it ends up a foam, it is relatively simple to cut off and, if needed, sand down some of those foam which expands inward though usually, that is not a large matter.