It works perfectly as a concrete expansion joint sealant.
How to fill joints in exterior concrete block wall.
Squeeze the caulk from your caulk gun so that the caulk fills the joint top to bottom and backer rod to the surface of the concrete block.
Apply concrete to any gaps in the blocks or mortar using a shovel.
Clean the joints with water.
This unique product is placed on top of a row of block in the horizontal mortar joints.
Remove the plastic after three days.
Run the entire bead and then using your spray bottle filled with solvent or water depending upon the type of caulk you selected wet your finger and draw it down the joint to smooth and clean any excess.
Safety goggles cold chisel hammer masonry caulk wire brush mortar mix.
You can also used thin wire reinforcing for concrete block walls.
Cover the patched area with a sheet of plastic and secure it to the wall with duct tape.
Use a smooth even motion filling the crack flush with the surface beveling it if it s against the house.
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.
Mix up new mortar.
Filling the joints is only cosmetic but that is what the owner wants.
Fill in the cracks or holes with concrete.
This is to allow the walls to be hosed down when needed.
How to repair cinder block mortar joints.
This thin steel once embedded in the mortar adds significant strength to long concrete block walls.
I am bidding a job to turn a concrete block building into a dog boarding kennel.
You will need the following tools to start.
Snip the opening of the tube at a 30 degree angle making the opening the same size as your gap.