Efflorescence
White, chalky deposits on concrete are efflorescence — salts carried to the surface by moisture. It signals moisture activity that has to be understood before coating. Every slab is different, so recommendations depend on an on-site evaluation — we do not diagnose specific floors from photos alone.
Common causes
- Moisture drive through the slab
- Salts in the concrete or subgrade
- Poor drainage around the slab
How we approach it
- Address the moisture source when possible
- Clean and neutralize the surface
- Moisture-mitigation coating system
Preparation
- On-site evaluation of the concrete and any existing coating
- Moisture and adhesion testing where warranted
- Full mechanical preparation before any new material is installed
- Compatible repair materials for cracks, spalls, and pits
Frequently asked
Can I coat right over efflorescence?
No. It signals active moisture and must be cleaned and evaluated first.
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Call or request an estimate — we walk your space, evaluate the concrete, and recommend a system that actually fits.