Hairline Cracks In Concrete Block Walls

As the name suggests this concrete crack sealer is specifically made to deal with hairline cracks.

Hairline cracks in concrete block walls.

But these hairline cracks eventually turn into deeper and wider cracks. Hairline foundation cracks are by far the most common cracks encountered when inspecting foundation walls. Concrete walls containing horizontal cracks are serious issues. 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.

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. Cracks regularly occur in all types of masonry walls including reinforced concrete slab walls concrete block walls brick walls and stucco walls. 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. Hairline cracks are commonly observed in freshly placed concrete and their occurrence is owed to the phenomenon of plastic shrinkage.

If a crack between the wall and floor exceeds. Fill it with a caulk suitable for use on concrete. Horizontal cracks in concrete walls however indicate poor wall designs or pressure buildup behind the wall. If a vertical crack widens at the top or bottom the wall is either settling or gradually heaving which may present serious issues.

As the name implies these cracks are very small about 0 003 inches 0 08mm in width and can be very shallow. Stair step cracks may also signify heaving. Contents causes of hairline cracks in concreteprevention of hairline cracks in concreterepair of hairline cracks in. We repaired a foundation wall which had an 8 ft long crack that leaked water into the basement during periods of heavy rainfall.

To permanently patch the crack we used an epoxy injection system from polygem called the liquid concrete repair. Plus a hairline crack is enough for moisture to seep into the concrete surface and hurt. People often ignore hairline cracks thinking it s not a major issue.