Mortar In Blocks - Concrete, Stone & Masonry - DIY Chatroom Home Improvement Forum

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Old 09-10-2013, 12:45 PM   #1
Join Date: Mar 2013
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Mortar in blocks

I own a home built in 1935 in Pittsburgh, PA.

I noticed a few places on the blocks of my foundation where the mortar is falling out (seemingly due to weathering). I've read that repairing the mortar between bricks of this age requires a certain type of mortar, and that buying modern mortar will damage the brick due to differing rates of expansion and contraction. Is this the case with the cement blocks of my foundation? I purchased a bucket of cement patch before reading the above, and wanted to check before I start filling cracks and holes.


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Old 09-10-2013, 01:02 PM   #2
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The problem only exists with brick and not block.

You just need to clean out joint and then tuck point with a Type N mortar. You can start with a bag of pre-proportioned Type N mortar.



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