How To Fix Hairline Cracks In Concrete Block Walls

Repairing a foundation crack of this nature is similar to repairing other non structural cracks.

How to fix 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. Diagonal foundation or wall cracks in concrete block or other cmu walls foundations diagnosis repair. Concrete blocks are often used in constructing a wide range of structures from homes to commercial properties and outdoor structures. The steps involved in the repair of hairline cracks in concrete are as follows.

This chapter of the foundation crack bible discusses in detail the process of evaluating stair stepped or diagonal cracking and related signs of foundation movement or damage in concrete block walls. Filling a small and moderate crack is necessary to prevent unhealthy conditions in the home. To permanently patch the crack we used an epoxy injection system from polygem called the liquid concrete repair kit 60. Fill it with a caulk suitable for use on concrete.

This is the first and foremost step in the repair of hairline cracks in the concrete. If a crack between the wall and floor exceeds. Although concrete blocks are strong and durable cracks sometimes develop. This technique will work for cracks smaller than 3 8 inch wide in the sidewalk driveway garage floor basement or steps.

Filling small cracks in concrete keeps them from turning into big holes. Commonly rectangular concrete blocks are manufactured as a solid block of concrete or with hollow chambers. Hairline cracking within concrete block walls is the result of internal stresses. Use an epoxy injection system for basement wall crack repair.

For this project you ll need. Manufacturers cast cinder block also known as concrete masonry units from pumice or clay and concrete to form a lightweight hollow block. Cracks in basement walls allow water to enter the basement which leads to mold and mildew growth.