Definition
Efflorescence
White crystalline deposits on masonry or concrete surfaces caused by water dissolving salts within the material and carrying them to the surface.
The Full Picture
Efflorescence occurs when water migrates through concrete, brick, or stone, dissolving soluble salts along the way. When the water reaches the surface and evaporates, it leaves behind white, powdery mineral deposits. While efflorescence itself is cosmetic and not structurally damaging, it's an important indicator — it proves that water is moving through the material. In basements and foundations, efflorescence signals moisture intrusion that could lead to more serious problems: mold growth, rebar corrosion, freeze-thaw damage, or structural deterioration.
Why It Matters
Why field professionals need to document this
Efflorescence is one of the most common findings in home inspections, foundation evaluations, and building condition assessments. It's the visible symptom of an invisible problem — water movement. For inspectors, documenting the location, extent, and pattern of efflorescence helps identify the moisture source and assess severity. Heavy efflorescence on a basement wall tells a very different story than light dusting on a decorative brick facade.
In a Report
How this shows up in findings
Here's how an efflorescence finding looks in a professional field report generated by ReportWalk:
Minor efflorescence on exterior brick — cosmetic only, no moisture concern
Heavy efflorescence on basement wall with damp surface — active moisture intrusion, waterproofing evaluation recommended
Efflorescence on parking garage ceiling — water migrating through slab from level above, membrane repair needed
Relevant For
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