Cracks in a wall are sometimes a sign that you need to replace some of the concrete. Extensive damage or cracking isn't always repairable.
However, sometimes, a filler can repair cracks. For example, you can inject special concrete repair polyurethanes into the wall to make it good again. What are the benefits of using these products?
1. You Want to Add Strength to the Concrete
Using a regular filler on a concrete crack isn't a long-term solution. The filler fills the gap, at least temporarily, but it may not be strong enough to stay stable in its concrete sandwich.
The area you fill also won't match the general strength of the wall. It could create weak spots in it. You could end up with structural problems.
Polyurethane fillers are a much stronger solution. Some of these products cure and set to a high hardness level. In some cases, they set harder than concrete itself. So, you'll know that the filler can hold its own and strengthen your wall at the same time.
2. You're Working with Damp Conditions
If you have had cracks for a while and the wall is exposed to the elements, then you probably have some water ingress inside the cracks. Or, damp conditions or water may have caused the damage in the first place.
Finding a filler that works in damp or wet conditions isn't always easy. Some products only work if the surfaces they adhere to are dry. They may take too long to cure or may not set at all. They also don't necessarily provide a watertight seal to protect the wall in the future.
Polyurethane fillers don't have problems with dampness, moisture, or even water. You can apply them in these conditions and they still cure and set. If you have a leak, they immediately stop it up. They also make the crack area watertight again.
3. You Need Flexible Movement
Concrete walls are subject to movement over time. This can cause problems for standard fillers. These fillers might fill cracks but they can't always cope with movement themselves.
As the wall moves over the years, the filler stays where it is. The crack may develop around it again and the filler may start to fall out.
Polyurethane crack fillers are flexible. They bond tightly to the concrete around them and then move with it. This gives you a more effective long-term fill.
To find out more about polyurethane crack injection services, contact local concrete crack repair companies.