Evidence of crumbling bricks usually indicates water damage that requires tuckpointing mortar to prevent further spalling brick.
How to fix crumbling brick mortar?
Dr. Christina Wilson on LinkedIn: Foundation Plantings and Old
What is Brick Spalling?
Why are my bricks still crumbling and showing effervescence? : r/AusRenovation
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What to Do When You See Crumbling Bricks on Your Home
House bricks crumbling : r/DIYUK
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Is Your Mortar in Need of Repointing?
Why are bricks crumbling? : r/HomeMaintenance
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