Robust Self Flow – Cementitious Self Leveling Compound

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Robust Self Flow – High-Performance Cementitious Self Leveling Compound

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Discover Robust Self Flow, a premium cementitious self-leveling compound for smooth, durable, and even surfaces. Perfect for floors before tile or epoxy coatings.

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Robust Self Flow

LSI (Latent Semantic Index) Keywords:

Cementitious self leveling compound, floor leveling chemical, self leveling underlayment, self leveling floor screed, smooth concrete floors, self leveling cement, leveling compound for tiles, floor preparation chemical, robust construction chemicals.


1. Introduction: What is Robust Self Flow?

Robust Self Flow is a high-performance cementitious self-leveling compound designed to create smooth, flat, and even surfaces on concrete substrates. It is ideal for both residential and commercial flooring where precise leveling and surface regularity are required before applying tiles, vinyl, epoxy, carpet, or wooden floors.

This advanced formulation from Robust Construction Chemicals combines high-quality cement, graded fillers, and polymer additives that ensure excellent flow characteristics, self-leveling ability, and superior adhesion to substrates. Once mixed with water, it forms a fluid and easy-to-apply compound that naturally spreads out to form a perfectly level surface.

Why Choose Robust Self Flow?

Modern construction demands precision, aesthetics, and performance. Uneven or rough surfaces not only affect the appearance of floor finishes but also lead to premature failures. Robust Self Flow eliminates undulations, improves adhesion for top coatings, and significantly enhances floor performance.


2. Key Features and Benefits

Robust Self Flow offers several technical and performance benefits that make it the preferred choice among engineers, applicators, and flooring specialists.

Key Features:

  • Cementitious, single-component formulation

  • Excellent self-leveling and flowability

  • Fast setting and quick drying

  • Strong bond to concrete and other substrates

  • Shrinkage-compensated formula

  • Smooth and hard surface finish

  • Pumpable and easy to apply

  • Low VOC, environmentally friendly

  • Suitable for internal and external use

Major Benefits:

1. Superior Surface Finish

The compound levels itself, eliminating trowel marks and ridges, resulting in a mirror-smooth surface ideal for decorative flooring applications.

2. Fast Application

Can be pumped or poured directly over substrates, allowing rapid coverage of large areas. It’s especially suitable for industrial and commercial projects.

3. Strong Adhesion

Formulated to bond excellently with concrete, screeds, and cementitious underlays, preventing delamination or lifting under stress.

4. Crack and Shrink Resistant

Polymer modification ensures controlled shrinkage and prevents micro-cracks, even during curing or under thermal stress.

5. Compatible with Finishes

Perfect as a base for epoxy coatings, vinyl, tiles, parquet, or carpet flooring, ensuring consistent performance across finishes.

6. Cost-Effective

Quick setting, easy-to-use formula reduces labor cost, time, and material wastage, offering long-term durability.

7. Environmentally Safe

Free from harmful solvents and VOCs; conforms to green building standards and safe for indoor use.


3. Typical Applications

Robust Self Flow is designed for a wide range of industrial, commercial, and residential applications where smooth and level surfaces are required.

Application Areas:

  • Concrete floors before tiling or vinyl installation

  • Industrial workshops and warehouses

  • Hospitals and laboratories

  • Shopping malls and showrooms

  • Offices and residential apartments

  • Airports and public buildings

  • Hotels and restaurants

  • Educational institutions

  • Parking decks and service corridors

Substrates:

  • Concrete slabs

  • Cementitious screeds

  • Old concrete surfaces (after surface preparation)

  • Tiled or epoxy floors (with suitable primer)


4. Technical Data Sheet (TDS)

Property Test Method / Description Result / Value
Appearance Grey powder
Composition Polymer-modified cementitious blend
Mixing ratio 25 kg powder : 5.0–5.5 liters clean water
Density of mixed material Approx. 1.9–2.1 g/cm³
Pot life 20–30 minutes @ 25°C
Flow time 2–4 minutes
Walkable time 4–6 hours
Final set time 24 hours
Compressive strength (28 days) > 25 MPa
Flexural strength (28 days) > 7 MPa
Bond strength > 1.5 MPa
Application thickness 2 mm to 10 mm (single coat)
Coverage Approx. 1.5 kg/m²/mm thickness
Shelf life 12 months (sealed bag)

5. Surface Preparation

Proper surface preparation is essential for ensuring strong adhesion and a flawless finish.

Step-by-Step Surface Preparation:

  1. Clean the Substrate
    Remove dust, oil, grease, paint, and loose materials. The surface should be structurally sound.

  2. Repair Defects
    Fill cracks, holes, and honeycombs with suitable Robust repair mortar or epoxy filler.

  3. Dampen the Surface
    Lightly dampen (SSD condition) but avoid standing water.

  4. Apply Primer
    Use Robust Acrylic Primer to enhance bonding and reduce water absorption from the substrate. Allow primer to dry before applying Self Flow.


6. Mixing Instructions

Equipment Needed:

  • Clean mixing bucket

  • Mechanical mixer or drill with paddle

  • Measuring jug for water

Mixing Procedure:

  1. Pour the recommended amount of clean water into the bucket.

  2. Gradually add Robust Self Flow powder while mixing.

  3. Mix continuously for 3–5 minutes until a lump-free, homogeneous, flowable mixture is obtained.

  4. Allow the mix to rest for 2 minutes, then remix briefly before application.

Avoid over-mixing or adding extra water, as it may cause segregation or reduced strength.


7. Application Procedure

  1. Pour or Pump the mixed compound onto the prepared surface.

  2. Spread evenly using a steel trowel or spreader.

  3. Allow the compound to flow and self-level naturally.

  4. For large areas, work in sections maintaining wet edges to avoid cold joints.

  5. Use a spiked roller to remove trapped air bubbles.

  6. Allow it to cure for 24 hours before applying any topcoat or flooring material.

Thickness Recommendation:

  • Minimum: 2 mm

  • Maximum (single coat): 10 mm

  • For thicker layers, apply multiple coats after initial curing.


8. Curing and Drying

  • Keep surface protected from direct sunlight and wind during initial curing.

  • No water curing required.

  • Allow 24 hours drying before light foot traffic.

  • Allow 72 hours before laying tiles, wood, or vinyl floors.


9. Coverage Calculation

Thickness (mm) Approx. Coverage (m² / 25 kg bag)
2 mm 8.5–9.0 m²
3 mm 6.0–6.5 m²
5 mm 3.5–4.0 m²
10 mm 1.7–2.0 m²

Coverage may vary depending on substrate condition and surface profile.


10. Packaging and Storage

  • Packaging: 25 kg moisture-resistant laminated bags

  • Storage: Store in cool, dry conditions away from direct sunlight

  • Shelf Life: 12 months in unopened packaging


11. Health and Safety Precautions

  • Use gloves, masks, and safety goggles during handling.

  • Avoid contact with eyes and skin.

  • In case of contact, rinse with clean water immediately.

  • Keep out of reach of children.

  • Dispose of empty bags responsibly.


12. Quality Assurance and Standards

Robust Self Flow is manufactured under strict ISO-certified quality systems ensuring consistent performance, strength, and workability. It complies with ASTM C1708 and EN 13813 standards for self-leveling underlayments.


13. Compatibility and Recommendations

  • Compatible with Robust primers, sealers, waterproofing coatings, and epoxy finishes.

  • For external or damp areas, apply Robust Protective Coating after leveling.

  • Always test adhesion on small areas when applying over old or treated surfaces.


14. Common Problems and Solutions

Problem Possible Cause Solution
Poor leveling Excess water or poor mixing Follow mixing ratio strictly
Cracking Applied too thick in one coat Apply in layers
Bubbling Air entrapped Use spiked roller
Weak surface Early traffic Allow full curing time

15. Environmental Impact

Robust Construction Chemicals ensures environmentally responsible production.

  • Low VOC formula

  • Recyclable packaging

  • Complies with LEED & Green Building norms

  • Safe indoor use


16. FAQs

Q1. Can Robust Self Flow be used outdoors?
Yes, it can be used for covered outdoor applications. For exposed areas, a protective coating is recommended.

Q2. How long before applying tile or epoxy coating?
Minimum 24–48 hours, depending on temperature and humidity.

Q3. Can it be used over old tiles?
Yes, with proper cleaning and primer application.

Q4. Is primer necessary?
Yes, primer ensures better adhesion and prevents pinholes or blistering.

Q5. What temperature range is ideal for application?
Between 10°C and 35°C.


17. Advantages for Contractors and Builders

  • Rapid application for large surfaces

  • Reduces floor preparation time

  • Ensures uniform leveling before finishing

  • Compatible with multiple flooring types

  • Reliable quality from Robust Construction Chemicals

  • Excellent customer and technical support

 

22. Advanced Technical Insights into Robust Self Flow

A. Composition and Chemistry

Robust Self Flow is a carefully engineered cementitious formulation that combines:

  • Portland cement (base binder)

  • Redispersible polymer powders (for flexibility and bonding)

  • Calcium aluminate (for rapid hardening)

  • Graded silica fillers (to improve density and flow)

  • Flow and leveling agents (to enhance self-spreading ability)

  • Shrinkage compensators (to minimize cracking)

  • Defoaming and plasticizing additives

This optimized combination gives the compound:

  • Smooth consistency

  • Extended working time

  • High early strength

  • Excellent adhesion to cement-based substrates

B. Polymer Modification Explained

The polymer modification plays a critical role in enhancing the tensile and flexural strength of the self-leveling layer. The polymers increase the compound’s resistance to cracking, improve its elasticity, and enable it to adhere strongly even on slightly flexible or vibrating substrates.

This makes Robust Self Flow suitable for diverse conditions such as:

  • High foot traffic areas

  • Industrial floors subject to vibration

  • Renovation over old concrete substrates


23. Performance and Strength Testing

Each batch of Robust Self Flow undergoes rigorous quality control and testing at Robust Construction Chemicals’ R&D facility.

Testing Parameters:

Property Test Standard Typical Result
Flow Diameter ASTM C1708 140–160 mm
Compressive Strength (1 day) ASTM C109 12 MPa
Compressive Strength (28 days) ASTM C109 > 25 MPa
Flexural Strength EN 196-1 > 7 MPa
Adhesion to Concrete EN 13892-8 > 1.5 MPa
Shrinkage ASTM C157 < 0.05%
Setting Time (Initial / Final) ASTM C191 3 hrs / 24 hrs
Abrasion Resistance EN 13892-4 Excellent

Long-Term Durability:

Field tests have shown that floors installed with Robust Self Flow maintain their levelness, bond strength, and surface integrity for 10+ years under normal conditions — proving its reliability for long-term performance.


24. Importance of Self-Leveling Compounds in Modern Construction

In modern architecture and interior design, floor perfection is not optional — it’s essential. Uneven floors cause:

  • Tile cracking

  • Poor finish aesthetics

  • Uneven load distribution

  • Water ponding in wet areas

  • Difficulty installing floor finishes

Robust Self Flow addresses all these issues. It’s a smart solution that not only levels the surface but also prepares the floor to perfection for advanced finishes like:

  • Epoxy and polyurethane coatings

  • Decorative microtopping

  • Vinyl planks or tiles

  • Large-format porcelain tiles


25. Step-by-Step Professional Application Guide

This section details how professional applicators ensure optimal results with Robust Self Flow.

Step 1: Surface Inspection

Inspect for cracks, laitance, or moisture content. Moisture content should be below 5% before application.

Step 2: Surface Preparation

Mechanically grind or scarify the surface to remove laitance or contaminants. Vacuum clean the surface thoroughly.

Step 3: Priming

Apply Robust Acrylic Primer diluted 1:1 with water using a roller. This seals the surface and prevents rapid water absorption.

Step 4: Mixing

Use a mechanical paddle mixer. Mix one 25 kg bag with 5–5.5 liters of clean, cool water for 3–5 minutes.

Step 5: Pouring and Spreading

Pour the mixture immediately and spread using a steel spreader or gauge rake. Maintain a uniform thickness.

Step 6: Air Release

Use a spiked roller to release entrapped air and ensure smoothness.

Step 7: Curing

Allow the floor to set undisturbed for at least 6 hours. Protect from direct sun or strong airflow.

Step 8: Floor Finishing

After 24–48 hours, the floor can be ready for:

  • Tile fixing using Robust Tile Adhesive

  • Epoxy coating

  • Vinyl or carpet laying


26. Troubleshooting Guide for Applicators

Issue Cause Solution
Cracking Applied too thick / rapid drying Apply thinner layers, protect from heat
Blistering No primer / trapped air Use primer and spiked roller
Dusty surface Overwatering Follow correct water ratio
Poor adhesion Dirty or oily surface Clean and prime properly
Color variation Uneven mixing Mix thoroughly with paddle mixer

27. Comparison with Other Leveling Compounds

Parameter Robust Self Flow Ordinary Screed Gypsum-Based Leveler
Setting Time 4–6 hours walkable 24 hours+ 8–12 hours
Strength >25 MPa 15–20 MPa 10–15 MPa
Shrinkage Controlled High Medium
Flow Excellent Poor Good
Crack Resistance Very high Moderate Low
Surface Finish Mirror-smooth Rough Smooth
Application Pump/pour Manual Manual
Durability Long term Medium Limited (moisture sensitive)

Verdict:
Robust Self Flow provides superior flowability, higher strength, faster setting, and excellent long-term stability compared to conventional leveling materials.


28. Industrial and Commercial Case Studies

Case Study 1 – Shopping Mall Floor Leveling

Project: Lahore Central Mall
Area: 3,500 m²
Issue: Uneven concrete surface prior to tile installation
Solution: Applied 5 mm layer of Robust Self Flow
Result: Mirror-smooth surface achieved within 2 days. Tiling commenced within 48 hours. No surface failures reported after 2 years.

Case Study 2 – Pharmaceutical Industry

Project: Karachi Pharma Plant
Challenge: Needed seamless level surface before epoxy flooring
Application: 8 mm layer of Robust Self Flow over primed surface
Outcome: Perfect leveling achieved with no pinholes; epoxy coating adhered perfectly.

Case Study 3 – Residential High-Rise Floors

Project: Islamabad Luxury Apartments
Need: Quick-drying leveling layer under vinyl planks
Method: 3 mm average thickness applied
Result: Walkable within 6 hours; flooring started next day; smoothness tolerance achieved ±1 mm.


29. Storage, Shelf Life, and Handling

Storage Tips:

  • Keep in original, unopened bags in a cool and dry place.

  • Avoid exposure to moisture.

  • Store on wooden pallets off the floor.

  • Shelf life: 12 months from manufacturing date.

Handling:

  • Use PPE (mask, gloves, safety glasses).

  • Avoid inhaling dust.

  • Clean tools immediately with water after use.


30. Integration with Other Robust Products

Robust Self Flow is compatible with a wide range of Robust Construction Chemicals systems, such as:

Category Product Name Purpose
Primer Robust Acrylic Primer Improves adhesion
Adhesive Robust Tile Fix Tile fixing after leveling
Epoxy Coating Robust Epoxy 3000 Topcoat protection
Sealer Robust Surface Guard Dustproofing & sealing
Waterproofing Robust PU Liquid Rubber For wet area protection

When used together, these products provide a complete flooring system — from base preparation to final finish.


31. Environmental & Sustainability Credentials

  • Low VOC content (<10 g/L)

  • Non-toxic and non-corrosive

  • Contributes to LEED certification points under materials and resources

  • Packaged in recyclable paper bags

  • Reduced carbon footprint during production

Robust Construction Chemicals continues its commitment to eco-friendly and sustainable building materials, ensuring long-term environmental safety and compliance.


32. Professional Tips for Best Results

  1. Always measure water accurately — too much water weakens the surface.

  2. Work quickly; don’t mix more material than can be applied within 20 minutes.

  3. Avoid applying in extreme temperatures.

  4. Protect new surface from drafts and direct sunlight for at least 24 hours.

  5. Ensure proper primer coverage — never skip this step.

  6. Maintain continuous wet edges between batches to avoid joints.

  7. Use laser levels to check thickness and flatness.


33. Maintenance and Aftercare

Although Robust Self Flow requires minimal maintenance, some aftercare practices can increase longevity:

  • Avoid heavy loading before full curing (3 days).

  • Use neutral pH cleaning solutions only.

  • For bare self-leveling floors, apply Robust Surface Sealer for dust resistance.

  • Inspect regularly for cracks due to substrate movement.


34. Economic and Project Benefits

Choosing Robust Self Flow can save considerable time and cost in construction:

Time Savings

  • Walkable within 6 hours

  • Ready for tiles or epoxy within 24–48 hours

  • Reduces project delays

Cost Efficiency

  • Low labor cost due to easy flow application

  • Reduced material wastage

  • No need for additional sanding or grinding

Quality Assurance

  • Ensures uniform floor flatness (SR1 standard)

  • Enhances finish durability

  • Increases client satisfaction and building value


35. Global Comparisons and Competitive Edge

Compared to international brands like Ardex, Mapei Ultraplan, and Sika Level, Robust Self Flow delivers similar or superior results in:

  • Workability

  • Compressive strength

  • Cost-efficiency

  • Local technical support availability

Being locally manufactured, it also ensures:

  • Faster supply

  • Lower logistics cost

  • Customized technical assistance

This makes Robust Self Flow the preferred self-leveling solution for construction projects across Pakistan, Middle East, and Asia.


36. Certification and Compliance

Robust Self Flow complies with the following international standards:

  • EN 13813 CT-C25-F7 – Cementitious screed material

  • ASTM C1708 – Flow and leveling compounds

  • ASTM C109 / C348 – Strength properties

  • ISO 9001:2015 – Quality Management

  • ISO 14001:2015 – Environmental Management

All products undergo third-party testing for consistency, durability, and safety compliance.


37. Future Innovations by Robust Construction Chemicals

Robust Construction Chemicals continuously invests in R&D to develop:

  • Fiber-reinforced self-leveling variants

  • Ultra-fast drying compounds for express flooring

  • Lightweight self-leveling solutions for mezzanine floors

  • Self-leveling systems compatible with underfloor heating

These innovations will further enhance floor performance, reduce project times, and contribute to sustainable smart construction.


38. Professional Endorsements

Leading civil engineers, architects, and applicators in Pakistan and the Middle East endorse Robust Self Flow for:

  • Ease of use

  • Reliable consistency

  • Superior surface results

  • Minimal callbacks or rework

Testimonials highlight that Robust Self Flow provides international quality performance at local market pricing, making it an unbeatable value proposition.

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