R4 Flex Putty
High-Strength Cement-Based Mortar for Crackless Smoothing & Structural Strengthening
Two-Component, Water-Impermeable & High-Ductility Solution for Concrete, Stone & Masonry Surfaces
Ideal for seismic reinforcement, leveling & mesh laying--easy to mix, strong adhesion, long-lasting performance.
≥30 N/mm²
Compressive
Key Features & Benefits
Advanced cement-based mortar technology delivering superior performance for demanding construction applications
Crackless Application
No cracks after curing, stable performance in various environments and weather conditions
High Bonding Strength
Adheres firmly to concrete, stone, brick & tuff surfaces (≥2.5 N/mm² after 28 days)
Water & Gas Impermeable
Resists water penetration and aggressive atmospheric gases for long-term protection
Easy Mixing
Mixes with potable water--mechanical mixing ensures homogeneity with no lumps
High Ductility
Suitable for structural strengthening & seismic stress resistance applications
Versatile Use
For smoothing, leveling, mesh laying & masonry reinforcement applications
Applications & Use Cases
Versatile structural strengthening mortar for professional construction applications
Smoothing & Leveling
Concrete, stone, brick & tuff surfaces preparation for final finishes
Structural Strengthening
Facing walls, ceilings, masonry elements reinforced with glass fiber mesh
Seismic Reinforcement
Resists stresses from seismic activity using advanced mesh laying system
Masonry Repair
Leveling & strengthening of stone/brickwork structures and heritage buildings
Technical Specifications
Comprehensive technical data for R4 Flex Putty cement-based mortar specifications
| Parameter | Details |
|---|---|
| Type | Two-component cement-based mortar (powder + liquid admixture) |
| Pot Life of Mix | 30 minutes |
| Max Thickness per Coat | 6 mm (single layer) |
| Application Temperature | +5°C ~ +35°C |
| Setting Time (23°C, 50%RH) | Beginning > 4 hrs; Ending < 9 hrs |
| Compressive Strength | >5 N/mm² (1 day); >20 N/mm² (7 days); >30 N/mm² (28 days) |
| Flexural Strength | >1.5 N/mm² (1 day); >6 N/mm² (7 days); >9 N/mm² (28 days) |
| Adhesion to Concrete | >2.0 N/mm² (7 days); >2.5 N/mm² (28 days) |
| Dosage | 1.0-1.5 kg/m² per mm of thickness |
| Packaging | 22 kg kit (20kg Component A Powder + 2kg Component B Liquid) |
| Shelf Life | Component A: 12 months; Component B: 24 months (dry storage ≥+5°C) |
Application & Mixing Guide
Step-by-step R4 Flex Putty mixing instructions and wall putty application guide
Surface Preparation
Clean, sound substrate (remove dust/oil/old paint); wet until saturated (no standing water)
Mixing
Add Component B (liquid) + 6L water → slowly add Component A (powder) → mechanical mixing (no hand mixing) → homogeneous mixture (no lumps)
Application for Mesh Laying
1st layer (0.8-1.5mm) → press mesh → 2nd layer (2-3mm, cover mesh) → smooth while fresh; mesh overlap ≥5cm
Application as Smoothing Layer
Spread up to 6mm thickness → smooth with metal trowel; use R2 Finish Coat for smooth finish
Curing
Protect from quick evaporation (dry/hot/windy conditions); cure at ≥+5°C
Usage Precautions
Do not apply at temperature <+5°C
Do not add cement/aggregates to the mix
Cure carefully in dry/hot/windy environments (prevent water evaporation)
Store components at ≥+5°C (original packaging, dry place)
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