When the Floor Isn’t Ready, MR. JO Primer – UPS Steps Up
When the Floor Isn’t Ready, MR. JO Primer – UPS Steps Up
In the world of epoxy flooring, the ideal scenario is rare:
A bone-dry, freshly ground concrete surface, free of dust, moisture, or surprises.
But reality isn’t always perfect. Especially when:
- You’re dealing with damp floors during monsoons
- The site is running behind schedule
- Substrates are under-prepared, dusty, or slightly moist
- You can’t afford the time, effort, or cost of extensive surface preparation
That’s where MR. JO Primer – UPS shines.
This moisture-tolerant, all-weather epoxy primer is engineered for under-prepared, high-risk, or damp surfaces — and gives you a reliable base even when the concrete doesn’t cooperate.
🔍 The Problem with Moisture
Concrete is a sponge. Even long after curing, it can:
- Absorb and release ambient moisture
- Remain damp from below in high groundwater areas
- Condense humidity, especially in basements and coastal locations
If you apply a standard primer or epoxy topcoat on damp floors:
- Delamination can occur in days
- Blisters may form due to vapor pressure
- Adhesion becomes weak and patchy
- Your topcoat fails, and the blame falls on the applicator
💡 MR. JO Primer – UPS to the Rescuecial?
UPS = Underprepared Substrate Primer
Built to bond where others fail.
✅ Key Advantages:
- Moisture-tolerant – performs on damp or humid floors
- Penetrates porous or dusty concrete for strong anchoring
- Forms a vapor-resistant barrier below your SL or HB floor
- Saves prep time – ideal for fast-paced, cost-conscious projects
- Compatible with all MR. JO floor systems
Best suited for:
- Monsoon projects or open-to-air sites
- Old floors where shot-blasting is not feasible
- Service rooms, basements, pump houses
- Industrial warehouses with concrete dusting issues
🛠️ How to Apply MR. JO Primer – UPS
1. Surface prep:
Remove loose dust, dirt, oil, or standing water. UPS tolerates moisture, but not visible water or grease.
2. Mix:
100:50 by weight (resin:hardener)
3. Apply:
Roll or brush onto damp/underprepared concrete.
It has enough body to coat even slightly absorbent surfaces.
4. Wait:
Let it cure for 6–8 hours @ 25°C before overlaying with SL, HB, or screeds.
📊 Coverage & Performance
- Coverage: 4–5 m²/kg (depends on porosity and dampness)
- Pack sizes: 1.5 kg, 7.5 kg, 30 kg kits
- Appearance: Slightly opaque film, tack-free post-cure
- Adhesion strength: Excellent, even on 4–6% moisture floors
💡 No sanding needed if topcoat is applied within 24 hours.
- Grinding or Shot Blasting to remove laitance and open pores.
- Vacuum Cleaning to eliminate dust.
- Repairing Cracks or Joints using MR. JO Tecseal CRP.
- Correct Primer to match porosity and moisture levels.
“The better the preparation, the better the performance—and the better it looks.”
📍 Where It Works Best
- Cold rooms and freezers – where condensation is common
- Ground-floor shops & garages – high humidity exposure
- Basement labs or pharma storage – damp-prone slabs
- Sites with tight timelines – no grinding? No problem.
💬 Real-World Reviews
“We couldn’t grind the floor due to timeline pressure. UPS bonded right over and saved us days.”
— Flooring Contractor, Ahmedabad
“Used during rains in Silvassa. No bubbles, no peel-off. UPS just works.”
— Site Manager, Industrial Client
🔗 Use It with These MR. JO Systems
| System | Why Pair with UPS? |
| MR. JO FloorKot-HB / CMR / YLW / CLR | When floor is damp or dusty |
| MR. JO Floor-SL0.5 / SL1 / SL2 | When perfect prep is not possible |
| MR. JO Underlay-STD / FLO | Great for warehouses & factories |
| MR. JO EcoFloor | Use UPS when economy matters but conditions aren’t ideal |
🧠 Build on a Solid Base, Even When the Floor Isn’t
You don’t always get perfect site conditions.
But with MR. JO Primer – UPS, you don’t have to wait for them either.
It’s the ultimate problem-solving primer — giving epoxy installers and flooring professionals the power to prime confidently, even on damp or tricky surfaces.
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