Hairline Cracks In Concrete Block Walls

Hairline cracking within concrete block walls often referred to as stair step cracking or mortar joint cracking is an example of an imperfection or distress but does not typically compromise structural integrity.

Hairline cracks in concrete block walls.

We repaired a foundation wall which had an 8 ft long crack that leaked water into the basement during periods of heavy rainfall. Minor cracks in cinder block foundations the cracks in the images above are very ordinary and nothing to worry about except for the fact that the foundation is leaking. Concrete wall crack repair in 8 steps use an epoxy injection system for basement wall crack repair. Hairline foundation cracks are by far the most common cracks encountered when inspecting foundation walls.

Hairline cracking within concrete block walls is the result of internal stresses. Contents causes of hairline cracks in concreteprevention of hairline cracks in concreterepair of hairline cracks in. Horizontal cracks in concrete walls however indicate poor wall designs or pressure buildup behind the wall. Cracking is frequently found in masonry walls due to the settling wall foundations the movement of framing materials temperature changes and the application of loads to the wall.

As the name implies these cracks are very small about 0 003 inches 0 08mm in width and can be very shallow. As the name suggests this concrete crack sealer is specifically made to deal with hairline cracks. Concrete walls containing horizontal cracks are serious issues. Repairing a foundation crack of this nature is similar to repairing other non structural cracks.

People often ignore hairline cracks thinking it s not a major issue. Fill it with a caulk suitable for use on concrete. Plus a hairline crack is enough for moisture to seep into the concrete surface and hurt. Stair step cracks may also signify heaving.

If a vertical crack widens at the top or bottom the wall is either settling or gradually heaving which may present serious issues. Hairline cracks are commonly observed in freshly placed concrete and their occurrence is owed to the phenomenon of plastic shrinkage. To permanently patch the crack we used an epoxy injection system from polygem called the liquid concrete repair.