Gerber specializes in providing brick and stone laying services, concrete installations, and masonry repairs. Gerber has over four years of experience running GO Masonry and over ten years of general masonry work experience. This article has been viewed , times. Cinder block walls may be sturdy, but continual wear over time can cause cracks or holes.
In severe cases, you may even need to replace sections of the wall for its stability. But while cinder block walls may seem intimidating to fix, making reparations is simple if you have the right tools. As long as you assess the damage and fill or replace the affected area, your wall will be restored to good condition again. To repair small cracks or holes in cinder block walls, you can use concrete.
First, clean any parts of the wall that you plan to repair so the cement or mortar adheres securely. Hose the wall down or scrub it with a washcloth, then use a metal file to smooth out any rough edges. Then, apply mortar around the edges of the cavity before setting the new block in place. To learn how to best mix your mortar to hold your new cinder block, keep reading! Did this summary help you?
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By using our site, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow. Download Article Explore this Article parts. Tips and Warnings. Things You'll Need. Related Articles. Article Summary. Part 1. Clean any parts of the wall that you plan to repair.
Before you begin repairing the wall, clean it to make sure any cement or mortar you apply will adhere securely. Survey your wall and make a note of any dirty or cracked areas. You will need to smooth out cracks and hose down dirty sections before the wall is ready to clean. File away any rough edges.
Locate any damaged areas on the cinder blocks and file any rough bits with a metal file. Keep filing until the edges are smooth and level. I try to get back to anyone with a question.. To do this, you can't just spread new concrete onto the old blocks like cake frosting. You won't be able to get a nice flat finish, and it won't adhere very well. To attach the new concrete to the end of the wall, you need to use wall ties. The purpose of these metal straps is to provide a connection between your new concrete and the original wall.
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. For the best adhesion, you should wet down the surfaces which will come into contact with the new cement.
You want it damp not wet. A hand held mister bottle works great. Using a trowel we filled the hole with the wet concrete, making sure the top was smooth:. Fit a tube of silicone-type sealant in a caulking gun. The sealant must be compatible with masonry. Guide a steady bead of caulking all the way around the pipe, squeezing extra caulking in the gap between the pipe and the cinder blocks.
Smooth excess as you go with the tip of the caulking tube. Mix sack-type mortar mix with water as directed on the package in a plastic bucket.
Mix only as much as you need. Spray the surface and inside edge of the cinder block hole with enough water to dampen the block but not so much that the water runs down the wall.
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