Fixing foundation cracks


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Old 07-25-20, 10:25 AM
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Fixing foundation cracks

Iím starting work on repointing my block foundation cracks. I have a few questions. Iím using a grinder with a concrete blade to clean up the joints. Do I need to remove all the mortar in the joint or just the loose motor? Before I refill the cracks can I add backer rod or just fill it in with mortar? Whatís the best mortar to use? Any tips you have would be appreciated. Thanks
 
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Old 07-25-20, 10:48 AM
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Can I spray foam into the larger cracks to take up some of the void? Thanks
 
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Old 07-25-20, 12:26 PM
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So be informed that when your working with block, your only dealing with the inner joint, there is still more to the outside that you can not reach.

If it's leaking you need to attack from the outside, internal repairs are not going to eliminate the issue!
 
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Old 07-25-20, 02:34 PM
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It on the corner of my house and itís cracked on the outside mortar joint. I cleaned up the joints. Is all I need to do is reapply mortar?
 
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Old 07-25-20, 03:06 PM
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That is a start, block and mortar are not good water proof, it typ takes an exterior membrane to redirect water to drain field!
 
 

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