Seal Cracks Concrete Block Wall

Hydraulic cement does not bond well to concrete and will get loose after a couple of years.

Seal cracks concrete block wall.

Caulking concrete cracks install backer rod. Fill and smooth the joint. Paint a generous coating of this material onto the wall working the product in all directions to completely seal any pinholes. Set the rod 1 4 in.

Repairing leaking cracks in concrete block walls is a common challenge for many homeowners. If you notice vertical or diagonal cracks forming have a contractor inspect your foundation as you may have a foundational leak on your hands in addition to any leaks the wall crack has caused. Urethane caulk is easy to apply but will soon peel. The crack or expansion joint must be cleaned of all debris.

Fill the crack with urethane caulk similar to what you would use for driveway caulk. If a crack between the wall and floor exceeds inch some can be two inches wide or more inches wide call a foundation contractor who can fill it by injecting an expanding epoxy. Use foam backer rod into the gap with your fingers. Waterproofing the exterior of your home can help protect your walls for longer.

Seal the entire concrete wall with a waterproof masonry product. There are the common fixes that do not last. Some low volume epoxy sealants are supplied.