Water is one of the most powerful forces of nature, and it can cause serious damage to concrete block walls. To repair badly damaged areas, you will need to use a capping chisel and sled to chip away the damaged concrete block. Concrete blocks are more porous than standard concrete blocks or poured concrete, making them more susceptible to water seepage, radon gas, salt deposits, and efflorescence. To protect them from water damage, you can apply waterproofing and drainage solutions during new construction or renovations.
Common waterproofing methods include the application of large layers, rubber membranes, waterproofing paint, or asphalt-based waterproofing compounds. Years of continuous water filtration can enlarge the pores of the blocks, leading to holes that leak water and efflorescence seeping from the inside of the concrete. Clogged pores in the blocks can prevent RadonSeal and Ion-Bond Armor from penetrating and reacting inside the concrete. To strengthen concrete blocks, you can fill them with concrete.
The key to maintaining a brick or block wall is to routinely check the mortar joints of the wall. Smooth, crumbling mortar joints let water in and cause serious damage to the wall. Faulty mortar joints require mortar to be removed and replaced. If you take the time to re-aim, you can have a safe cinder block wall for decades and save yourself a lot of trouble in the long run. Sealing concrete blocks will extend their service life by protecting them against water - the main enemy of concrete.
Gerber specializes in providing brick and stone laying services, concrete installations and masonry repairs. If you are worried about damp and wet walls or water in your basement or access space, it is time to waterproof the walls of concrete blocks.