Epoxy Floor Blistering Repair
Adelaide specialists in diagnosing and permanently fixing blistered, bubbled, and moisture-damaged epoxy floors.
Blistering Symptoms:
- Small bubbles: Pin-head to coin-sized bubbles across surface
- Large blisters: Raised sections you can push down
- Water-filled bubbles: Visible liquid under coating
- Clustered patterns: Groups of blisters in wet areas
- Progressive worsening: More blisters appearing over time
🚨 Moisture = Failure
Blistering is almost always caused by moisture vapor transmission from the concrete slab. This happens when:
- • No moisture barrier was applied
- • Concrete wasn't fully cured/dried
- • Ground water beneath slab
- • Poor drainage around property
We conduct moisture meter testing before any repair to prevent re-occurrence.
Technical Causes of Epoxy Blistering
Moisture Entrapment
CriticalHigh concrete moisture or vapor transmission pushes coating upward, creating bubbles
Excessive Heat During Application
HighInstalling epoxy in direct sunlight or high temperatures causes rapid gas formation
Solvent Entrapment
MediumFast-drying conditions trap solvents beneath the surface, forming blisters as they escape
Contaminated Substrate
HighOil, grease, or chemical residues prevent proper adhesion and cause localized bubbling
Our Moisture-Safe Repair Process
We don't just remove blisters - we solve the underlying moisture problem to prevent recurrence.
Moisture Testing
Professional concrete moisture meter testing to measure vapor transmission rates
- • Calcium chloride test (ASTM F1869)
- • Relative humidity probe testing
- • Identify moisture source
Complete Removal & Prep
Diamond grinding removes all blistered coating and contaminants
- • Shot blasting or grinding
- • Deep cleaning of substrate
- • Surface profile creation
Moisture Barrier System
Premium moisture vapor barrier prevents future moisture damage
- • High-quality epoxy primer
- • Moisture mitigation coating
- • 100% solids topcoat system
Why Professional Moisture Testing is Critical
❌ Without Moisture Testing:
- • New coating will blister again within months
- • Wasted money on temporary "fix"
- • Ongoing moisture damage to concrete
- • Potential structural issues develop
✅ With Professional Testing:
- • Identify exact moisture levels (MVER rate)
- • Apply correct moisture barrier system
- • Prevent re-occurrence permanently
- • 10-year warranty on repair work
Can blistered epoxy be saved?
No. Once blistering occurs, the adhesion bond is compromised. The entire coating must be removed, the moisture issue resolved, and proper moisture barrier applied before recoating.
Will blistering spread?
Yes. If caused by moisture vapor transmission, blistering will progressively worsen and spread as ground moisture continues pushing upward through the concrete.
How do you prevent blistering in Adelaide's climate?
Adelaide's clay soils retain moisture. We conduct moisture meter testing on all projects and apply premium moisture barrier primers (18-22μm thickness) before any epoxy system installation.
Do you offer a warranty on blister repairs?
Yes. Our moisture-mitigated repairs include a 10-year warranty. We document moisture readings before and after to guarantee the problem is permanently resolved.