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I have a frame house that sits on about 4' of split-face block. The house is 30 years old, and I was pressure washing the block to re-seal it. Noticed a number of gnarly cracks like this one:

Crack in mortar

  1. I'm hoping this isn't caused by the pressure washer (going at about 1600psi, moving quickly enough to get the grime off)
  2. Is this something I can just seal with an epoxy or caulk (material-appropriate), or do I need to tuckpoint / replace the mortar?
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    Those are not that bad but repointing and resealing is a good way to keep the wall in good shape for many years. Many block walls crack but keeping the cracks clean and repointed will prevent freeze damage (not common on the west coast) very import mid west and east coast where it gets burr cold. – Ed Beal Jul 1 '18 at 22:01

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