How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
What is rising damp?
Thursday, November 10, 2022
"Rising damp" is water being pulled up through porous building materials that are in contact with the ground—like concrete, masonry, or stucco—by capillary action. The wetness can result in mold, wood rot, stained walls, and elevated humidity inside a home. The solution to this problem, which is an especially vexing one in Florida, is a damp proof course.
Rising damp can also cause efflorescence, the white, powdery discoloration and deterioration on brick and concrete block. See our articles What causes raised white lines of residue on a block wall that are crusty and crumbling? and What causes brick stain or discoloration near the ground? and What causes the surface of old bricks to erode away into sandy powder? for more on this.
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Here’s links to some of our other articles about moisture intrusion problems:
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