Basement walls, just like other types of constructions, may develop cracks. Some cracks may develop soon after the construction work has been completed while others will occur after several years.
Some cracks arise as a result of the settling or sinking of the concrete in the ground and are therefore nothing to worry about. However, some types of cracks may be severe in that they indicate serious flaws in the foundation of the basement or any other type of structure. Such cracks need to be attended to as quickly as possible.
Cracks vary in terms of their orientation and the location in which they appear. In this piece, you will learn about 4 types of basement wall cracks and what they mean for your basement.
- Vertical cracks
Vertical cracks are likely to develop as the concrete of the basement walls shrinks in the process of curing. Such cracking generally doesn’t impact the structural integrity of the basement wall. However, the cracks can cause moisture to enter the basement if the basement’s walls are not waterproofed. Thus, even though you don’t have to worry about vertical cracks affecting the structural integrity of your basement walls, you still have to repair these cracks to address moisture issues.
- Diagonal cracks
There are numerous types of basement wall cracks that have a diagonal orientation. For instance, a crack may begin at the top of the basement and spread diagonally downwards. As well, a diagonal crack may appear at any spot on the basement wall, appearing wider at the top and narrower at the bottom. Also, you may spot a diagonal crack at the corner of a window or a door.
Diagonal cracks are caused by various factors including uneven settling of the foundation concrete and concrete shrinkage.
- Stair-step shaped cracks
Stair-step shaped cracks are comparable in appearance to diagonal cracks save for the fact that the cracks occur in the mortar joints of block and brick walls. When these types of cracks occur in the wall of a basement, they indicate that there are problems in the foundation of the basement.
- Horizontal cracks
Horizontal cracks suggest serious structural flaws in the basement foundation. They indicate that the foundation is unable to sustain the pressure of the wall or may be caused by external forces such as the movement of heavy equipment.
What to do when you see basement wall cracks
It advisable to let a certified contractor inspect your basement in order to determine the cause as well as the possible impact of different types of basement wall cracks.
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