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MR. JO Underlay – CMR

MR. JO Underlay – FLO
MR. Floorkot – CMR

₹5,604.00 – ₹21,295.00 Inclusive of all taxes

Three component chemical resistant epoxy screed

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Description

Mr. JO Underlay – CMR is a three-part, solvent-free epoxy screed. It also resists chemicals and protects surfaces. It ensures strong, lasting repairs. as a result, it’s Ideal for heavy-duty areas, it creates a smooth finish.

  • Color: Neutral
  • Pot life @25°C: 80-100 mins
  • Mixing Ratio: 100:60:650 PBW
  • Mixture consistency: Tampable
  • Good chemical resistant
  • Coverage: 1.8 kg/m2/mm
  • Industrial flooring
  • Pavement
  • Slope for drainage
  • As a bedding to enhanced floor’s mechanical strength
Surface Preparation 
  • Remove all dust and debris by physical and mechanical means, prior to application of the product. surfaces should be freed from laitance and dust by sand-blasting.
  • In case sand-blasting is not possible, thorough abrading with a hard wire brush should be preferable.
Application Method
  • 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 all the three components provided in kit thoroughly for at least 2minutes. Apply the mix directly by pouring and spreading with the help of trowel.
  • Allow 4-5 hour for surface to dry and 24 hours to achieve strength.
 
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Q1. What is MR. JO Underlay-CMR used for?

A1. A high-performance, chemically resistant epoxy screed for use under floors exposed to:

  • Acids
  • Solvents
  • Chemical spills or effluent zones
Q2. How is it different from MR. JO underlay-TMP?

A2. It’s based on a chemically resistant resin-hardener system, with higher filler ratio and superior durability in aggressive environments.

Q3. Ideal industries for MR. JO Underlay-CMR?

A3. ETP, STP, chemical plants, plating shops, battery rooms, and coastal projects.

Q4. What are MR. JO Underlay products used for?

A4. All underlay products are epoxy-based screeds designed for:

  • Leveling rough or uneven concrete floors
  • Building thickness (1–6 mm) before epoxy topcoats
  • Providing a strong, bonded base for self-leveling or roller-applied coatings
Q5. What are the key differences among the four underlays?

A5.

Product Type Key Use Case Flow Thickness Resistance

FLO

 Flowable Smooth, even underlayment High 1–3 mm Standard
TMP Tampable Slope formation, rough leveling Low 4–6 mm Standard
STD Flowable Cost-sensitive jobs Medium 2–3 mm Standard
CMR Tampable Chemically exposed zones Low 4–6 mm+

High (chemical)
  Q6. Which underlay is most economical?

A6. MR. JO Underlay-STD is designed to be a cost-effective alternative to premium flowable systems like MR. JO Underlay-FLO. Ideal for large-scale flooring with budget constraints.

Q7. Which one should I use for chemical zones?

A7. Use MR. JO Underlay-CMR, a chemically resistant screed, ideal for:

  • ETPs/STPs
  • Chemical plants
  • Battery zones
  • Coastal installations
Q8. Can I use these screeds without a topcoat?

A8. They're designed as underlays. For long-term durability, especially in industrial or exposed zones, overcoat with:

Q9. Are these compatible with all MR. JO epoxy floors?

A9. Yes — all four underlays are compatible with:

Q10. Do I need to use a primer before applying underlays?

A10. Yes. Choose based on surface:

Q11. How do I apply each type?

A11. 

  • FLO / STD: Pour, spread using trowel or notched rake, level out
  • TMP / CMR: Place with trowel, tamp/compact manually
Q12. Can I broadcast sand on underlay for grip?

A12. Yes, especially if you're planning to overlay with screed, tile mortar, or non-epoxy layers. Broadcast dry quartz sand on the wet underlay before full cure.

Q13. Can I mix MR. JO ArtPigment into the underlays?

A13. No. Underlays are not designed to be pigmented. They come in neutral (reddish-brown or grey) tones since they are not exposed.

Q14. What if there are cracks or potholes before underlay?

A14. Use MR. JO Tecseal-CRP to patch and repair before primer and underlay application.

Q15. What are the typical pot lives?

A15. All systems offer a working time of 30–40 minutes at 25°C. Always mix only as much as you can apply within that window.

Q16. When can I apply topcoat after underlay?

A16. Typically after 8–12 hours, once surface is touch dry. Ensure it's clean and dust-free before applying topcoat.

Q17. Can I leave the underlay exposed temporarily?

A17. Short term, yes — but for long-term protection, always apply a proper epoxy flooring or coating.

Q18. Can I use these screeds for repairs too?

A18. Yes:

  • TMP and CMR can be used for patch repairs or pothole filling
  • Add extra sand or filler as needed for volume