Product - MR. JO Protectokot – CRH

Description

Mr. JO Protectokot – CRH is a two-part epoxy coating. It is solvent-free and medium viscosity. It resists chemicals used in factories and construction sites. As a result, it protects surfaces and lasts a long time. Moreover, it is easy to use and offers strong protection.

• Color: Clear to pale yellowish
• Pot life @25°C: 20-25 mins
• Mixing Ratio: 100:33 PBW
• Resistant to concentrated acids
• Mixture consistency: Medium viscosity liquid
• Coverage : 4 m²/kg/coat
• Optics: Transparent/Translucent

• Chemical resistant coating
• Acid & chemical tank lining
• Interior lining of chimney

• The mixture should be applied on a clean and rough surface. For good results, it is required that the substrate is free from loose particles.
• Suitable degreasing agent should be used to remove any grease, oil or traces on the surface.

• Repair the surface if damaged. Allow 2-3 hours for surface of repaired area to dry. Choose a suitable product from Jpoxy’s JO range of Adhesives for repairing.
• Apply primer for better adhesion on substrate. Allow 4-5 hours for surface of repaired area to dry. Choose a suitable product from Jpoxy’s JO range of Primers.
• Mix the two components in small batches thoroughly for at least 2minutes. Apply the mix using brush or spatula to the pretreated surfaces.
• Allow 4-5 hours for surface to dry and 24 hours to achieve full strength.

A1. MR. JO Protectokot – CRH is a quick-setting, high-solids epoxy system designed for:

• Heavy-duty protective coatings on concrete and masonry
• Lining applications in industrial zones, pits, tanks, or plant floors
• Situations where rapid curing and early handling are needed

A2.

• It has a unique 100:300 mix ratio, indicating pre-filled, highly loaded components for direct application
• Offers quick setting and fast return-to-service
• Formulated for aggressive environments involving chemicals and mechanical stress

A3. Yes. It is typically supplied in a neutral or grey tone, optimized for industrial and lining work. Color customization may be available upon request.

A4. Yes, it provides both moisture resistance and chemical shielding, though it is primarily used as a chemical-resistant coating, not a flexible waterproofing membrane.

A5. The mix ratio is 100:33 by weight (Resin : Hardener). Ensure both components are mixed thoroughly using a mechanical stirrer to achieve a uniform, lump-free consistency. Prepare only as much material as can be applied within its short pot life (approx. 10–15 minutes at 25°C).

A6.

• Pot life: ~10–15 minutes (depending on temperature)
• Initial cure: ~2–3 hours
• Full cure: ~3–5 days for full chemical resistance

Use immediately after mixing, and prepare small batches based on working time.

A7. Generally one thick coat is sufficient, though two coats may be used for aggressive chemical or mechanical environments.

A8.

• Surface must be dry, clean, and slightly roughened
• Grinding or shot-blasting is recommended on concrete
• Prime with MR. JO Primer-MVC / LVC / UPS if the substrate is highly porous or damp

A9. While CRH is a high-build coating, it can be further filled with quartz sand to act as a trowelable repair mortar or base screed.

A10.

• Effluent treatment plants
• Sumps, drains, tanks
• Floor pits and containment areas
• Chemical plant floors and bunds

A11.

• Light traffic: ~8–12 hours
• Heavy traffic or chemical contact: 3–5 days
• Overcoating (if needed): within 8–16 hours

Q12. Can CRH be used in submerged environments?

A12. Yes, after full cure, it is resistant to standing water, chemical effluent, and saltwater exposure. Ensure surface preparation is correct and coating is continuous.

A13. Some UV-induced color shift may occur over time. For aesthetics or UV exposure zones, consider a UV-resistant topcoat.

A14. Yes. CRH is designed for masonry and concrete, and adheres well to metal surfaces with appropriate preparation and priming.

A15. Yes. Lightly abrade and clean the surface, then reapply MR. JO Protectokot-CRH or a compatible repair system.