Patching Holes In Concrete Block Walls

I considered a lot of options.

Patching holes in concrete block walls.

Several masonry patching products such as hydraulic cement do an adequate job of filling cracks in concrete walls. If the holes were smaller i would use hydraulic cement which actually slightly expands as it cures with about a 3 4 minute working time. To attach the new concrete to the end of the wall you need to use wall ties. Put a tube of combined mortar and concrete caulk into the caulking gun.

The guys at home depot had a lot of fun lamenting the fact that the hole existed to begin with and then suggested that i build a mold on one side of the wall and fill it in with a pour of concrete. Apply concrete to any gaps in the blocks or mortar using a shovel. Open it by cutting off the tip and squeezing until the contents come out in a bead. Water may be used to make sure that all loose concrete particles are removed.

The straps help transfer the load and allows for lateral movement so the new concrete doesn t peel away from the wall with settling or impact. However these products can fail after a few years if your foundation or retaining wall continues to move slightly leaving you with little choice but to chip them out and start all over again. After hearing that i seriously considered just gluing a piece of plywood over it and calling it a day. Holes this large make that type of fix impractical.

Chisel out any loose pieces of cinder block around the edges of the hole and brush away any loose debris with a nylon brush. The purpose of these metal straps is to provide a connection between your new concrete and the original wall. Fill the cracks and holes with concrete caulk. Le the hole or the crack dry for quite some time.

Fill the holes and cracks as deeply as you can then scrape the top over with a trowel so the concrete can patch the wall together evenly. Using a wire brush brush clean the cracks and the holes. Fill the hole with the patching compound. Step 2 combine a mortar mix with water in accordance with the mortar instructions.

Tap the chisel with a hammer and chip downward to the back wall of the block creating a larger. Mortar is commonly used to patch concrete and cinder block. If you do have hollow cinder block walls then yes you will need to use a filler like spray foam for areas the holes go all the way into the center. Lay the chisel on the edge of the hole and point it downward at a 45 degree angle into the block.

Spread a layer of patch mixture over the.