Product - MR. JO Underlay – STD

Description

Mr. JO Underlay – STD is a three-part, solvent-free epoxy underlay. It offers strong adhesion and durability. also, This underlay works well for many flooring applications. It creates a smooth base for toppings and bedding. As a result, it boosts performance and extends the lifespan of the floor.

• Color: Neutral
• Pot life @25°C: 90-110 mins
• Mixing Ratio: 100:50:275 PBW
• Mixture consistency: Flowable
• Coverage: 1.8 kg/m²/mm

• Flooring
• Pavement
• Slope for drainage
• As a bedding to enhanced floor’s mechanical strength

• 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.

• 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.

A1. It's a value-engineered flowable underlay, used below flooring in budget-sensitive projects where basic leveling and bonding is needed.

A2. STD is slightly less flowable, and more economical. Offers excellent coverage and workability for routine jobs.

A3. 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

A4.

A5. 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.

A6. Use MR. JO Underlay-CMR, a chemically resistant screed, ideal for:

• ETPs/STPs
• Chemical plants
• Battery zones
• Coastal installations

A7. They're designed as underlays. For long-term durability, especially in industrial or exposed zones, overcoat with:

• MR. JO Floor SL series
• MR. JO EcoFloor series
• MR. JO Protectokot-CMR, CR, CSA or HBCR

A8. Yes — all four underlays are compatible with:

• MR. JO Floor-SL0.5 / SL1 / SL2
• MR JO EcoFloor-SLP, SLB, SLS
• MR JO Floorkot-HB or CMR

A9. Yes. Choose based on surface:

• MR. JO Primer-MVC or LVC for dry, well-prepared concrete
• MR. JO Primer-UPS for damp or underprepared surfaces

A10. 

• FLO / STD: Pour, spread using trowel or notched rake, level out
• TMP / CMR: Place with trowel, tamp/compact manually

A11. 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.

A12. No. Underlays are not designed to be pigmented. They come in neutral (reddish-brown or grey) tones since they are not exposed.

A13. Use MR. JO Tecseal-CRP to patch and repair before primer and underlay application.

A14. 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.

A15. Typically after 8–12 hours, once surface is touch dry. Ensure it's clean and dust-free before applying topcoat.

A16. Short term, yes — but for long-term protection, always apply a proper epoxy flooring or coating.

A17. Yes:

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