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Repair cracks in the wall

Whether indoors or outdoors - every now and then small cracks appear in walls. Both the facade and the interior walls can be affected. No matter how big or small the cracks are, they generally don't look pretty. In addition, they can also indicate greater damage. Find out what causes this can be and how you can best proceed when repairing cracks in the wall.

Where are the cracks coming from?

The most diverse weather conditions as well as frost and heat, but also moisture can be causes of cracks in the walls. Especially in the outdoor area, sooner or later there will be minor blemishes or even major damage. The cause can also be too much stress or static errors. Accordingly, especially superficial cracks are often only a typical phenomenon of the time. Deeper cracks, on the other hand, can indicate problems with the foundation or with the statics. If you want to repair cracks in the wall but are not sure where those cracks are coming from, you should always get a professional to do it. Otherwise, it is quite possible that dynamic cracks or other indications of danger will be missed. It should be noted here that dynamic cracks always indicate movement of the building and can therefore be particularly dangerous.

Repair small cracks in the wall

Smaller cracks, such as fine hairline cracks, are usually not a danger. If you want to repair these cracks in the wall, it is often sufficient to fill them with plaster. It gets a little more difficult when wallpaper or colored plaster is over the cracks that need to be repaired. As a rule, it is very difficult to match the color or touch up the wallpaper in such a way that it is not noticeable. Laypersons often find it very difficult here, which is why it can make sense to hire an expert in these cases as well. Experienced professionals can repair cracks in the wall without it being noticed later - for a particularly beautiful result.

Repair larger cracks in the wall

It's a little different if you want to repair larger cracks in the wall. For this you usually need a joint filling profile. Before the actual work begins, the crack must be widened a little so that the joint filling profile fits in perfectly. The profile is then cut to size and glued with PU foam in the crack. The spot must then be treated very generously with primer. Alternatively, it is also possible to fill the crack with acrylic after fixing the joint filling profile. After everything has dried, the mass is smoothed off so that it is level with the plaster. As you can imagine, it's not that easy.

If you want to repair large cracks in the wall, you have to pay attention to a few things and work with caution. Under certain circumstances, many mistakes can also happen. Therefore, it always makes sense to have large cracks treated exclusively by experienced professionals. In this way, a respectable result is definitely achieved. Please also note that large cracks can sometimes indicate movements of the building. Professional advice is therefore sensible and necessary.


Repairing cracks in the wall doesn't sound that difficult at first. However, a few things must be taken into account here. Depending on their size, cracks can indicate many different problems and dangers. For this reason, it is always advisable to let an experienced professional do the work. In this way, you not only receive a professional assessment and advice, but also excellent results. MVM offers you a variety of individual services in this context. If you always want to be on the safe side, take a look at our "Façade check" subscription - this way we can always keep an eye on your outdoor area.

Best take today Contact Contact us and arrange a free consultation. We look at your walls and can repair cracks in the wall - with expertise and experience.

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