Sak Crack Block

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Sak Crack Block

High-Performance Fiber-Reinforced Crack Filler

SAKCRACK BLOCK is a premium, ready-to-use, fiber-reinforced crack filler designed to permanently seal plaster and masonry defects before final painting. Engineered with advanced dual-bonding technology, it fills structural and superficial gaps to prevent future water ingress and substrate degradation. It is ideal for internal and external walls, providing a flexible yet resilient repair solution for modern building envelopes.

2x+
2x+
Bond Strength
on Plaster
0%
0%
Shrinkage
and Cracking
5 Year+
5 Year+
Substrate
Protection

Engineered to Protect Substrates from Structural Re-cracking & Water Ingress

Conventional Fillers

Traditional systems often suffer from:

High shrinkage causing cracks to reappear after drying
Poor elasticity leading to failure during thermal expansion
Weak adhesion that flakes off under moisture stress

It is specially formulated to provide:

Fiber-reinforced structural integrity across wide gaps
Advanced dual-bonding adhesion that grips masonry firmly
Zero-shrinkage formulation for smooth, single-pass repairs
Weatherproof sealing that isolates internal plaster from external moisture

Key Benefits

Fiber-reinforced structural stability
Ultimate substrate adhesion
Complete shrinkage resistance
Seamless elastomeric flexibility
Weatherproof moisture seal
Smooth paint-ready finish

Fiber-reinforced structural stability
Ultimate substrate adhesion
Complete shrinkage resistance
Seamless elastomeric flexibility
Weatherproof moisture seal
Smooth paint-ready finish

Seamless elastomeric flexibility
Weatherproof moisture seal
Smooth paint-ready finish

where to use

1
Interior Walls
Living room and bedroom plaster walls
Ceiling joints and corner lines
Hallways and high-traffic interior surfaces
2
Exterior Facades
Concrete block walls and masonry
Cement plaster surfaces
Boundary walls and exposed parapets
3
Renovation Projects
Pre-painting surface rectification
Patchwork and old building restoration
Micro-crack repairs in weathered masonry
4
Institutional & Commercial Projects
• Schools and colleges
• Office buildings
• Retail developments

1
Interior Walls
Living room and bedroom plaster walls
Ceiling joints and corner lines
Hallways and high-traffic interior surfaces
2
Exterior Facades
Concrete block walls and masonry
Cement plaster surfaces
Boundary walls and exposed parapets
3
Renovation Projects
Pre-painting surface rectification
Patchwork and old building restoration
Micro-crack repairs in weathered masonry
4
Institutional & Commercial Projects
• Schools and colleges
• Office buildings
• Retail developments

application process

Step 1: Surface Preparation

Ensure the target crack is thoroughly cleaned and cleared of loose dust, algae, grease, and old paint residues.
Widen the crack slightly into a neat 'V' shape using a putty knife or mechanical tool to optimize the filling profile.
Remove all loose contaminants and weak material completely from the substrate gap.
Lightly pre-wet the substrate with potable water immediately before filling to prevent rapid water loss.

Step 2: Application

Press the paste firmly into the prepared crack using a clean putty knife or spatula.

Ensure the entire depth is completely packed with no trapped air pockets.
Level the surface smoothly with a continuous sweep of the blade, wiping away any excess material.
Apply the material in sequential layers for deeper structural gaps, allowing full drying between coats.

Step 3: Finishing / Curing

Allow the filled area to dry completely for at least twenty-four hours under ambient conditions.

Gently sand the repaired patch with fine emery paper once fully cured.
Match the profile texture evenly with the surrounding wall surface.
Ensure the treated area is fully stabilized before applying primers and decorative topcoats.

Step 1: Surface Preparation

Ensure the target crack is thoroughly cleaned and cleared of loose dust, algae, grease, and old paint residues.
Widen the crack slightly into a neat 'V' shape using a putty knife or mechanical tool to optimize the filling profile.
Remove all loose contaminants and weak material completely from the substrate gap.
Lightly pre-wet the substrate with potable water immediately before filling to prevent rapid water loss.

Step 2: Application

Press the paste firmly into the prepared crack using a clean putty knife or spatula.

Ensure the entire depth is completely packed with no trapped air pockets.
Level the surface smoothly with a continuous sweep of the blade, wiping away any excess material.
Apply the material in sequential layers for deeper structural gaps, allowing full drying between coats.

Step 3: Finishing / Curing

Allow the filled area to dry completely for at least twenty-four hours under ambient conditions.

Gently sand the repaired patch with fine emery paper once fully cured.
Match the profile texture evenly with the surrounding wall surface.
Ensure the treated area is fully stabilized before applying primers and decorative topcoats.

Important Note

Surface Preparation

Apply only on properly prepared and cleaned crack profiles. Follow recommended surface preparation and application practices to achieve optimum durability and a flawless finish.

Technical properties

Property	Description
Product Type	Crack Filler
Appearance	Smooth Paste
Finish	Matte Non-Shrink Finish
Key Feature	Fiber-Reinforced Dual Bonding
Weather Resistance	Excellent
Anti-Shrinkage Protection	Yes
Water Ingress Resistance	High
UV Resistance	Excellent
Application Method	Putty Knife or Spatula
Surface Compatibility	Cement Plaster, Concrete & Masonry Surfaces
Application Area	Interior and Exterior Walls
Packing	Available in Standard Packs
Shelf Life	As per sealed pack conditions

Property	Description
Product Type	Crack Filler
Appearance	Smooth Paste
Finish	Matte Non-Shrink Finish
Key Feature	Fiber-Reinforced Dual Bonding
Weather Resistance	Excellent
Anti-Shrinkage Protection	Yes
Water Ingress Resistance	High
UV Resistance	Excellent
Application Method	Putty Knife or Spatula
Surface Compatibility	Cement Plaster, Concrete & Masonry Surfaces
Application Area	Interior and Exterior Walls
Packing	Available in Standard Packs
Shelf Life	As per sealed pack conditions

Explore More of Sakarni's Catalogue

Frequently Asked Questions

1. What is it used for?

2. Can it be used outdoors?

3. Does it shrink after drying?

4. Is it ready to use or does it require mixing?

5. Can it be sanded down?

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High-Performance Fiber-Reinforced Crack Filler

2x+

2x+

0%

0%

5 Year+

5 Year+

Get Technical Consultation

Engineered to Protect Substrates from Structural Re-cracking & Water Ingress

Conventional Fillers

Traditional systems often suffer from:

High shrinkage causing cracks to reappear after drying

Poor elasticity leading to failure during thermal expansion

Weak adhesion that flakes off under moisture stress

Sak Crack Block

It is specially formulated to provide:

Fiber-reinforced structural integrity across wide gaps

Advanced dual-bonding adhesion that grips masonry firmly

Zero-shrinkage formulation for smooth, single-pass repairs

Weatherproof sealing that isolates internal plaster from external moisture

Key Benefits

Key Benefits

Fiber-reinforced structural stability

Ultimate substrate adhesion

Complete shrinkage resistance

Seamless elastomeric flexibility

Weatherproof moisture seal

Smooth paint-ready finish

Fiber-reinforced structural stability

Ultimate substrate adhesion

Complete shrinkage resistance

Seamless elastomeric flexibility

Weatherproof moisture seal

Smooth paint-ready finish

Seamless elastomeric flexibility

Weatherproof moisture seal

Smooth paint-ready finish

where to use

1

Interior Walls

Living room and bedroom plaster walls

Ceiling joints and corner lines

Hallways and high-traffic interior surfaces

2

Exterior Facades

Concrete block walls and masonry

Cement plaster surfaces

Boundary walls and exposed parapets

3

Renovation Projects

Pre-painting surface rectification

Patchwork and old building restoration

Micro-crack repairs in weathered masonry

4

Institutional & Commercial Projects

• Schools and colleges• Office buildings• Retail developments

1

Interior Walls

Living room and bedroom plaster walls

Ceiling joints and corner lines

Hallways and high-traffic interior surfaces

2

Exterior Facades

Concrete block walls and masonry

Cement plaster surfaces

Boundary walls and exposed parapets

3

Renovation Projects

Pre-painting surface rectification

Patchwork and old building restoration

Micro-crack repairs in weathered masonry

4

Institutional & Commercial Projects

• Schools and colleges• Office buildings• Retail developments

application process

Step 1: Surface Preparation

Ensure the target crack is thoroughly cleaned and cleared of loose dust, algae, grease, and old paint residues.

Widen the crack slightly into a neat 'V' shape using a putty knife or mechanical tool to optimize the filling profile.

Remove all loose contaminants and weak material completely from the substrate gap.

Lightly pre-wet the substrate with potable water immediately before filling to prevent rapid water loss.

• Schools and colleges
• Office buildings
• Retail developments

• Schools and colleges
• Office buildings
• Retail developments