
Over time, concrete structures lose their strength due to corrosion, cracking, leakage, or poor waterproofing. As an experienced Sika-approved contractor, we provide complete concrete repair and rehabilitation services across residential, commercial, and infrastructure projects in Kolkata, Guwahati, and Patna.
Kolkata has a mix of old colonial-era buildings, modern apartments, bridges, and commercial complexes. Over time, concrete structures get damaged due to:
Without timely concrete repair and rehabilitation, small cracks can turn into serious structural risks. That’s why professional concrete restoration services in Kolkata are not just about looks—they ensure safety, durability, and long-term strength.

Restoration of damaged RCC slabs, beams, columns, and foundations using polymer-modified and epoxy repair mortars.

Injection grouting, sealing, and waterproof coatings to stop active leakages.

Cleaning and protection of reinforcement bars using Sika corrosion-resistant primers.

Strength enhancement using Sika Carbodur, Sika Wraps, Sika micro-concrete, epoxy bonding agents, and structural grouts.

Long-term protection through liquid membranes, elastomeric coatings, and cementitious waterproofing systems.
1. Site Inspection & Diagnosis – Assessment of cracks, spalling, and corrosion to identify root causes.
2. Surface Preparation – Removal of weak concrete and cleaning of exposed rebar.
3. Bonding & Repair – Application of bonding agents and rebuilding with high-performance Sika repair materials.
4. Crack Injection & Finishing – Injection of resins or grouts, followed by surface finishing and coating.
5. Protection & Handover – Curing, quality checks, and final waterproof or protective coating.


















Get clarity on common queries about our offerings.
Due to Kolkata’s humid climate and aging buildings, concrete tends to crack and weaken. Timely restoration prevents accidents and extends lifespan.
It depends on the condition of your building. On average, inspections every 5–7 years help prevent major damage.
The cost varies based on the type of repair, area covered, and methods used. On average, concrete repair may range from ₹100 to ₹500 per sq. ft.
Yes, we specialize in restoring old and heritage structures while maintaining architectural authenticity.
Yes, we use advanced SIKA coatings, reinforcement, and protective treatments to ensure durability.
The Managing Director, Mr. A.K. Jain is a 1978 Batch Civil Engineering Graduate Chartered Engineer, having vast experience in the construction field. He is a Fellow Member of Institute of Engineers and has previously worked at National Projects Construction Corporation Limited (NPCC - Govt. of India PSU), where he was involved in multiple projects from 1978 to 1993. Some of the major projects include - Construction of subway boxes of Metro Railway from Chakroberia to Ashutosh College, Construction of Loktak Hydro Electric Project in Manipur, Construction of the main Power House, Permanent storage shed and township, and Construction of surface Power House in Jorthang, Sikkim.In 1993, he joined hands with Sika to be exclusively associated with the supply of Sika product materials and execution of job work by use of Sika materials. His leadership has enabled AKJ Engineers to be the top distributor of Sika in India for the past three decades
AKJ Engineers Private Limited, James Hickey Sarani, Esplanade, Chowringhee North, Bow Barracks, Calcutta, West Bengal, India
Open today | 10:00 am – 06:00 pm |
AKJ Engineers Private Limited
9, James Hickey Sarani, Esplanade, Chowringhee North, Bow Barracks, Kolkata, West Bengal 700069
Copyright © 2025 AKJ Engineers Private Limited
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