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Star Crack Shield — PU-Based Non-Shrink Crack Filling Compound
Star Crack Shield — PU-Based Non-Shrink Crack Filling Compound

Key Specifications

10 Years Durability
3mm Crack Bridging

Where to Apply

Concrete Structures
Rehabilitation Projects
Plaster Areas
Terraces
Bridges
Precast Structures

Concrete Crack Repair

Star Crack Shield

PU-Based Non-Shrink Crack Filling Compound for Durable Concrete Repairs

2K System | Non-Shrink | Chemical Resistant

Star Crack Shield is a high-performance, two-component polyurethane-based crack filling compound specifically formulated to address concrete crack issues. With excellent adhesion, flexibility, and durability, it provides a long-lasting solution for concrete rehabilitation.

Engineered for construction professionals and rehabilitation projects, this advanced 2K solvent-based system delivers 10-year durability, with coverage of 40–50 linear meters per kg for a 6mm x 6mm crack.

Benefits & Solution

  • Non-Shrink Properties — maintains volume after application, ensuring complete crack filling without gaps or voids
  • Crack Bridging Up to 3mm — effectively bridges cracks up to 3mm wide, accommodating structural movements
  • Quick Curing — rapid curing time minimizes downtime and allows for faster project completion
  • Chemical Resistance — resistant to various chemicals, ensuring long-term performance in harsh environments
  • Excellent Adhesion — strong bond with concrete surfaces ensures lasting repair and prevents crack reopening
  • Flexibility — maintains flexibility after curing, accommodating thermal expansion and contraction
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The Problem

Common Concrete Deterioration Problems

Crack propagation, water infiltration, and structural deterioration all threaten concrete structures over time. Star Crack Shield is built to solve all three.

01

Crack Propagation

Small cracks can expand over time, leading to structural weaknesses if left unaddressed.

02

Water Infiltration

Cracks allow water penetration, causing further damage and corrosion of reinforcement steel.

03

Structural Deterioration

Unaddressed cracks can lead to significant structural issues over time, shortening the service life of concrete structures.

Benefits

6 Key Benefits of Star Crack Shield

Star Crack Shield provides a comprehensive solution to concrete crack problems — penetrating deep into cracks, forming a strong bond with concrete surfaces, and curing into a flexible, durable seal that withstands environmental stresses.

Long-Lasting Protection

Long-Lasting Protection

Provides up to 10 years of durable crack protection for long-term peace of mind.

Waterproof Seal

Waterproof Seal

Prevents water infiltration, protecting structures against further damage from moisture and corrosion.

Structural Integrity

Structural Integrity

Maintains and restores structural strength to concrete elements, keeping structures sound for years.

Cost-Effective

Cost-Effective

Prevents expensive structural repairs by addressing crack issues early, before they escalate.

Complete Crack Filling

Fills and Seals Cracks Completely

Penetrates deep into cracks, ensuring complete filling from the bottom up without gaps or air bubbles.

Extended Lifespan

Extends Structure Lifespan

Prevents further crack propagation while maintaining aesthetic appeal, extending the working life of concrete structures.

How to Apply

Step-By-Step Application Guide

Applying Star Crack Shield is straightforward

Step 1

Surface Preparation

Clean cracks thoroughly, removing dust, loose particles, and contaminants. Widen fine cracks to create a 1mm V-groove for better adhesion, and ensure the surface is completely dry before application.

Step 2

Mixing & Application

Mix Star Crack Shield with water as per the packaging instructions, stirring continuously for at least 2 minutes for a uniform, lump-free consistency. Apply on a tacky substrate using a spatula or putty knife, pressing firmly to fill the crack completely without air bubbles.

Step 3

Curing

Allow the application to cure naturally, avoiding exposure to rain, direct sunlight, and extreme temperatures. Protect the fresh application for at least 24 hours.

Testimonials

Case Studies & Testimonials

"
V
Vikram Nair
Structural Rehabilitation Contractor, Kochi
★★★★★
Verified purchase
We used Star Crack Shield to repair structural cracks on an old bridge rehabilitation project. It bridged the movement joints well, and there's been no sign of reopening after a full year of traffic vibration.
"
M
Meera Krishnan
Homeowner, Coimbatore
★★★★★
Verified purchase
Our terrace had persistent leaks through hairline cracks every monsoon. Star Crack Shield sealed them completely, and combined with our usual waterproofing topcoat, the terrace has stayed dry since.

FAQs

Frequently Asked Questions

Everything you need to know about Star Crack Shield.

What is Star Crack Shield used for?

Star Crack Shield is a two-component polyurethane-based crack filling compound used for durable concrete crack repairs across buildings, bridges, terraces, and precast structures.

How wide a crack can Star Crack Shield fill?

It effectively bridges cracks up to 3mm wide while accommodating structural movements.

How long does Star Crack Shield last?

It offers up to 10 years of durable crack protection when applied correctly.

What is the coverage rate of Star Crack Shield?

Coverage is approximately 40–50 linear meters per kg for a 6mm x 6mm crack.

Does Star Crack Shield shrink after application?

No, it has non-shrink properties that maintain its volume after application, ensuring complete crack filling without gaps or voids.

What surfaces is Star Crack Shield compatible with?

It is compatible with concrete, brick, cement plaster, and brickbat coba surfaces.

Is Star Crack Shield chemical resistant?

Yes, it is resistant to various chemicals, ensuring long-term performance in harsh environments.

What tools are needed to apply Star Crack Shield?

It is applied using a spatula or putty knife, pressed firmly into the crack to ensure complete filling without air bubbles.

Does Star Crack Shield work with other Star products?

Yes, it works seamlessly with Star Lamination Shield, Star Cool Shield, and Star interior and exterior paints for comprehensive protection.

What precautions should I take during application?

Ensure the surface is completely dry, avoid direct sunlight, rain, and extreme temperatures during application and curing, protect the fresh application for 24 hours, and use appropriate personal protective equipment.

Still have questions?

Our team is happy to help with technical specs, application guidance, or a custom quote.

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