MARMOSTIC-T

MARMOSTIC-T

High-Performance Hybrid Resin Thixotropic Adhesive

 

MARMOSTIC-T by Marmo Solutions is a premium, two-component hybrid resin-based thixotropic adhesive engineered for heavy-duty and critical tile and stone installations across interior and exterior environments. Certified under EN 12004 (R2T), IS 15477:2019 (Type 5TS2 / 5T S2), and ANSI A118.15 standards, MARMOSTIC-T is formulated to deliver outstanding mechanical bond strength, superior chemical and water resistance, and high deformability (S2 deformability ≥ 5 mm). It provides a secure, permanent bonding bed for demanding substrates including drywall boards, structural metal surfaces, concrete, and masonry.

 

With its advanced thixotropic paste consistency, MARMOSTIC-T prevents heavy natural stone slabs, marble, granite, and large-format tiles from slipping or sagging during challenging vertical wall and overhead installations. Its flexible resin chemistry absorbs structural vibrations, deflections, and thermal stresses without cracking or shrinkage. From moisture-rich wet areas like swimming pools, commercial kitchens, and bathrooms to heavy industrial floors and exterior facades, MARMOSTIC-T provides an unyielding, high-shear bonding solution.

Key Features & Benefits

• Premium International Standards: Certified as R2T under EN 12004-1:2017, Type 5TS2 under IS 15477:2019, and ANSI A118.15.
• Exceptional Multi-Substrate Bonding: Bonds tenaciously to challenging substrates including metal, cement boards, gypsum boards, drywall, concrete, and masonry.
• High Flexibility & S2 Deformability: Offers deformability of ≥ 5 mm (S2 rating), effectively absorbing structural movements, vibrations, and thermal expansions.
• Anti-Sag Thixotropic Formula: Non-slump rheology engineered specifically for vertical and overhead stone/tile fixing without slipping.
• 100% Waterproof & Chemical Resistant: Impermeable barrier resistant to aggressive chemicals, solvents, and continuous water immersion.
• Zero Shrinkage: Guarantees complete dimensional stability during the curing cycle, preventing voids or debonding stresses.
• High Shear Adhesion: Delivers dry shear adhesion ≥ 6.0 N/mm² and heat-aged shear adhesion ≥ 3.0 N/mm².

Technical Specifications

Property	Technical Data / Specification
Product Classification	EN 12004-1:2017: R2T | IS 15477:2019: 5TS2 | ANSI A118.15
Component Type	Two-Component Hybrid Resin-Based System (Resin & Hardener)
Consistency	Thixotropic Paste
Color	White
Mixing Ratio	4:1 by weight (Component A : Component B)
Working Time / Pot Life	45 to 60 minutes at 25°C
Open Time	≥ 20 minutes at 25°C
Application Temperature	+5°C to +35°C
Initial Cure Time	4 to 6 hours
Full Cure Time	24 to 48 hours
Tensile Adhesion (Dry Condition)	≥ 2.0 N/mm²
Shear Adhesion (Dry Condition)	≥ 6.0 N/mm²
Shear Adhesion (Heat Ageing)	≥ 3.0 N/mm²
Deformability (S2)	≥ 5 mm
Chemical Resistance	Excellent
Shrinkage	Nil / No Shrinkage
Packaging Sizes	Component A: 4 kg & 8 kg pails | Component B: 1 kg & 2 kg containers
Shelf Life	12 months in original, unopened packaging stored in cool, dry conditions

Application Guidelines

1. Surface Preparation: Ensure the substrate is dry, clean, structurally sound, and completely free of dust, grease, wax, oil, loose debris, or contaminants. Smooth metal or non-porous surfaces should be mechanically roughened to provide an optimal mechanical key. Check stone translucency prior to application.
2. Mixing: Combine Component A (Resin) and Component B (Hardener) strictly in the specified 4:1 ratio by weight. Mix thoroughly using a slow-speed mechanical stirrer until a uniform, streak-free homogeneous white paste is achieved. Only mix what can be applied within the 45-60 minute pot life. Never add water, cement, sand, or thinners.
3. Application: Spread the mixed adhesive using the flat side of a trowel, then comb with an appropriate notched trowel onto the substrate. For vertical, overhead, large-format tile, or heavy stone installations, apply adhesive to both the substrate and the back of the stone/tile (back-buttering) for 100% contact.
4. Fixing: Firmly press the tiles or stone slabs into the wet adhesive bed within the 20-minute open time. For heavy stones or overhead installations, use temporary mechanical supports, clamps, or anchors until initial set is achieved.
5. Curing: Initial set occurs in 4 to 6 hours (no adjustments should be made after this time). Allow 24 to 48 hours for complete curing before opening to traffic or grouting joints.

Frequently Asked Questions (FAQs)

1. What is MARMOSTIC-T?

MARMOSTIC-T is a high-performance, two-component hybrid resin-based thixotropic adhesive formulated for heavy-duty, critical, vertical, and overhead tile and stone fixing.

2. What classifications does MARMOSTIC-T comply with?

It conforms to EN 12004 (R2T), IS 15477:2019 (Type 5TS2), and ANSI A118.15 standards.

3. What does “R2T” and “5TS2” classification mean?

“R2” stands for improved reaction resin adhesive, “T” denotes slip resistance (thixotropic), and “S2” indicates high deformability (≥ 5 mm).

4. Can MARMOSTIC-T bond tiles to metal surfaces?

Yes, it provides outstanding adhesion to structural metals and steel substrates when the surface is properly cleaned and roughened.

5. Can it be used on drywall and cement boards?

Yes, it is designed for demanding substrates such as cement boards, gypsum boards, and drywall partitions.

6. What is the mixing ratio of MARMOSTIC-T?

The mixing ratio is 4 parts Component A (Resin) to 1 part Component B (Hardener) by weight.

7. What is the pot life once mixed?

The working pot life is approximately 45 to 60 minutes at 25°C.

8. Can water or cement be added to adjust consistency?

No. MARMOSTIC-T is a 100% reactive resin system; adding water, cement, sand, or solvents will compromise curing and bonding strength.

9. Is MARMOSTIC-T suitable for overhead installations?

Yes, its thixotropic paste consistency resists sagging and slumping, making it ideal for overhead and vertical installations.

10. Is it suitable for wet areas and swimming pools?

Yes, it is waterproof and chemical-resistant, making it suitable for submerged swimming pools, fountains, and wet-room environments.

11. What is the deformability rating of MARMOSTIC-T?

It features an S2 deformability rating of ≥ 5 mm, accommodating high structural deflection, vibrations, and thermal expansion.

12. What are its shear and tensile adhesion strengths?

It delivers dry tensile adhesion ≥ 2.0 N/mm², dry shear adhesion ≥ 6.0 N/mm², and heat-aged shear adhesion ≥ 3.0 N/mm².

13. How long does MARMOSTIC-T take to cure?

Initial curing takes 4 to 6 hours, while full mechanical and chemical cure is achieved in 24 to 48 hours.

14. Does MARMOSTIC-T shrink during curing?

No, it exhibits zero shrinkage, guaranteeing dimensional stability without pulling away from substrate edges.

15. What tile and stone types can be installed with it?

It is ideal for large-format porcelain and vitrified tiles, marble, granite, composite stones, and natural stone slabs.

16. Is spot bonding recommended?

No, spot bonding is strictly prohibited. The adhesive must be applied using a notched trowel with full coverage (and back-buttering where needed).

17. What packaging sizes are available?

It is available in sets: Component A in 4 kg and 8 kg pails, and Component B in 1 kg and 2 kg containers (totaling 5 kg and 10 kg kit sizes).

18. What is the shelf life and proper storage condition?

It has a shelf life of 12 months in original unopened packaging when stored in a cool, dry place away from direct sunlight and freezing temperatures.

19. How should application tools be cleaned?

Clean tools and any uncured residue immediately using appropriate solvents or cleaners before the resin cures.