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Sak Crack Block (Repair & Bond)

Sak Crack Block (Repair & Bond)

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+ Bond Strength on Plaster

0% Shrinkage and Cracking

5 Year+ Substrate Protection

2x+ Bond Strength on Plaster

0% Shrinkage and Cracking

5 Year+ Substrate Protection

High-Performance Fiber-Reinforced Crack Filler

Conventional Fillers

Conventional Fillers

Traditional systems often suffer from:

  • 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

Sak Crack Block

It is specially formulated to provide:

  • 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

Seamless elastomeric flexibility

Seamless elastomeric flexibility

Weatherproof moisture seal

Weatherproof moisture seal

Smooth paint-ready finish

Smooth paint-ready finish

Fiber-reinforced structural stability

Fiber-reinforced structural stability

Ultimate substrate adhesion

Ultimate substrate adhesion

Complete shrinkage resistance

Complete shrinkage resistance

Seamless elastomeric flexibility

Seamless elastomeric flexibility

Weatherproof moisture seal

Weatherproof moisture seal

Smooth paint-ready finish

Smooth paint-ready finish

Fiber-reinforced structural stability

Fiber-reinforced structural stability

Ultimate substrate adhesion

Ultimate substrate adhesion

Complete shrinkage resistance

Complete shrinkage resistance

where to use

Interior Walls

Interior Walls

  • Living room and bedroom plaster walls
  • Ceiling joints and corner lines
  • Hallways and high-traffic interior surfaces
Exterior Facades

Exterior Facades

  • Concrete block walls and masonry
  • Cement plaster surfaces
  • Boundary walls and exposed parapets
Renovation Projects

Renovation Projects

  • Pre-painting surface rectification
  • Patchwork and old building restoration
  • Patchwork and old building restoration

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.

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

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Frequently Asked Questions

Coverage depends on surface porosity and application method. Please refer to the technical data sheet for detailed information.
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