Tougher Than Rust, Waterproof as a Tank: MR. JO ProtectoKot-BLK in Action
Tougher Than Rust, Waterproof as a Tank: MR. JO ProtectoKot-BLK in Action
Bridges, STPs, silos, and sea-coast installations face one enemy in common — corrosion and water ingress. Add to that chemical fumes, saline spray, moisture-laden concrete, and you’ve got a real threat to longevity.
But what if one solvent-free epoxy coating could do it all — seal, strengthen, waterproof, and protect?
Enter MR. JO ProtectoKot-BLK — a coal tar epoxy hybrid coating designed to form thick, chemical- and water-resistant films that outlast paints, beat the elements, and bring down cost per square meter.
🧩 The Problem
Most industrial paints suffer from:
- Thin film build (lower durability)
- Porosity, allowing water and vapors to seep in
- Solvent evaporation, causing shrinkage and smell
- Limited chemical resistance, especially in salt or wastewater settings
In critical infrastructure like:
- Effluent tanks
- Underground structures
- STP plants
- Marine pipelines
- Chemical silos
- …and vehicle chassis
Failure isn’t an option.
🧪 The Solution: MR. JO ProtectoKot-BLK
MR. JO ProtectoKot-BLK is a 100:100 PBW two-component solvent-free epoxy + coal tar system.
Coal tar contributes to waterproofing, chemical resistance, and cost-effectiveness, while the epoxy provides film strength, adhesion, and durability.
Together, they create a dense, impervious barrier coating for:
- Water tanks
- Pipelines
- Basements
- Bridges
- Rooftops
- Silos
- Swimming pools
STPs
⚙️ How It’s Used
✅ Surface Preparation
- Steel: Sandblasting, degreasing (trichloroethylene), hot air drying.
- Concrete: Sandblasting / wire brushing or 15% HCl acid etch, water wash, and hot air drying.
Cleanliness, roughness, and dryness = key for adhesion.
✅ Application Methods
🟦 Option 1: Standard Waterproofing / Coating
- 1 primer coat + 2 top coats
- Coating thickness: 350–400 microns total
- Apply next coat after prior is tack-free
- Use brush/roller
🟨 Option 2: Glass Fiber-Reinforced Lining
- Use epoxy-compatible CSM, tissue, or woven glass
- Apply ProtectoKot-BLK, place fiber, overlay with another coat
🟥 Option 3: Screed & Mortar Lining
- Mix ratio: 100 (Part A): 100 (Part B): 600–800 (Quartz)
- Apply primer coat
- While tacky, trowel 3–5 mm of epoxy mortar
- Finish with BLK seal coat
🔄 Cure Profile
- Pot life: ~30 min for 500g at 25°C
- Touch dry: ~6–8 hrs
- Full mechanical strength: ~72 hrs at 25–30°C
- Total cure: 7 days
Do not apply below 20°c
📈 Performance Highlights
| Property | Performance |
| Sea Water | ✔ Excellent |
| Sodium Hydroxide (All Conc.) | ✔ Good |
| Acidic/Marine Weather | ✔ Excellent |
| Tap/DI Water | ✔ Excellent |
| Salt Brine | ✔ Excellent |
| Benzene / Toluene / Xylene | ✘ Poor |
| Ethanol / Alcohols | ⚠ Fair |
| Aldehydes / Formaldehyde | ✔ Good |
| Mineral Oils | ⚠ Limited |
| Heptane, Octane, Petrol | ⚠ Limited |
| Acids (Dilute) | ✔ Good |
| Ketones / Acetone | ✘ Poor |
📌 Ideal for aqueous and alkaline resistance — not solvent-focused applications.
🏗️ Real-World Applications
Used across industries:
- STPs & Effluent Treatment Plants: Tanks, walls, sumps
- Bridges and Coastal Infrastructure: Corrosion protection under harsh marine exposure
- Underground Waterproofing: Sunken slabs, basements, invert slabs
- Vehicle Chassis Protection
- Granular Chemical Silos & Fertilizer Plants
- Industrial Floors in Petrochemical & Organic Units
💬 “We used ProtectoKot-BLK to waterproof a sunken slab in a pharma facility. After 3 coats and a screed top, zero seepage over two monsoons. This system just works.”
— Contractor, Rajasthan
🔧 Additional Advantages
- Solvent-Free = Low VOC, safe to use in confined spaces
- High Build = Superior thickness in fewer coats
- Versatile = Can be used as coating, screed, or lining
- Compatible with Glass Fiber = For structural linings
- Long Pot Life = Gives enough work time even in warm conditions
🔗 Compatible Products
- Primers:
- Mr. JO Primer MVC or LVC for dry concrete
- Mr. JO Primer UPS for damp or under-prepared surfaces
- Seal Coats: Add a final seal with ProtectoKot-BLK itself
- Other Options in the ProtectoKot Series:
- MR. JO Protectokot-CSA (Chemical/Solvent-Resistant)
- MR. JO Protectokot-CRH (Acid-Resistant)
- MR. JO Protectokot-HBCR (High Build, Green)
- MR. JO Protectokot-CR (General Purpose Corrosion Resistant)
🕒 Curing Timeline (varies slightly by grade)
- Handling strength: 8–12 hours
- Full cure: 24–72 hours (at 25°C)
- Optional post-curing at 50–60°C improves performance
🧪 Summary
MR. JO ProtectoKot-BLK is not just a coating — it’s a shield.
A flexible, proven solution that:
- Seals moisture
- Resists corrosive chemicals
- Builds film strength fast
- Lowers lifecycle cost
If you’re in a STP, marine, underground, or industrial zone — and you need reliability, thickness, and versatility — MR. JO ProtectoKot-BLK is your best bet.
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