Aluminium Windows in Kolkata
Reviewed by Santosh Mishra, Managing Director, Dortec · Last updated 30 October 2026
Dortec designs and supplies premium aluminium windows and doors for homes, apartments and commercial projects in Kolkata. As authorised aluminium window dealers in Kolkata, we offer factory-direct quality, certified installation teams and a fully transferable 10-year warranty on profile structural integrity and colourfastness. You can see the systems for yourself at our Experience Centre in Salt Lake Sector V: the same precision-engineered windows used in landmark projects across Eastern India.
When it comes to enhancing the appearance, functionality, and value of a property, aluminium windows have become a preferred choice for homeowners, architects, and builders. If you are searching for high-quality aluminium windows in Kolkata, Dortec offers innovative window systems designed to meet modern architectural requirements while ensuring long-lasting performance.
Book a visit to our Experience Centre or call +91 98301 04515.
Why Choose Aluminium Windows?
Aluminium windows combine strength, elegance, and low maintenance, making them ideal for both residential and commercial buildings. Unlike traditional window materials, aluminium provides exceptional durability and can withstand varying weather conditions without warping, cracking, or rusting.
Key advantages include:
- Slim and elegant profiles for maximum glass area
- Excellent durability and structural strength
- Corrosion-resistant finish
- Low maintenance requirements
- Enhanced natural light and ventilation
- Modern aesthetics suitable for contemporary architecture
- Energy-efficient and sustainable material
Premium Aluminium Window Solutions in Kolkata
At Dortec, we understand that every project has unique requirements. Our aluminium window systems are designed to offer superior performance while complementing the architectural style of your property. Whether you are constructing a new home, renovating an office, or developing a commercial complex, our solutions deliver both functionality and visual appeal.
Aluminium Sliding Windows
Sliding windows are ideal for modern homes and apartments where space optimisation is important. They provide smooth operation, excellent ventilation, and unobstructed outdoor views. See our sliding systems.
Aluminium Casement Windows
Casement windows offer maximum airflow and excellent sealing performance. They are suitable for residential projects that require enhanced ventilation and energy efficiency. See our casement systems.
Fixed Aluminium Windows
Fixed windows are perfect for creating large glass openings that maximise natural light while maintaining structural stability and contemporary aesthetics.
Doors, Façades, Railings and Partitions
Alongside windows, we supply slim aluminium doors, façade and glazing systems, glass railings, office partitions and mosquito screens, so one team can handle the whole building.
Customised Aluminium Window Systems
Every project is different. Dortec provides customised aluminium window solutions tailored to specific design, size, and performance requirements. Not sure which type suits which room? Read sliding vs casement windows.
Built for Kolkata’s Weather and Traffic
Kolkata experiences diverse weather conditions throughout the year. Aluminium windows are highly resistant to moisture, humidity, and environmental factors, making them a practical investment for long-term performance. Three things matter most here:
- Monsoon rain: wind-driven rain tests every seal, drainage channel and frame-to-wall joint. See our monsoon-proof windows guide, or if a window already leaks, why windows leak during the monsoon.
- Traffic noise: road-facing bedrooms in busy areas benefit from acoustic glazing and well-sealed casements. Read noise reduction windows.
- Heat and AC bills: long, humid summers mean long hours of air conditioning. Thermal break frames cut the heat coming through the frame. Read thermal break aluminium windows.
Their sleek appearance complements modern residential buildings, premium apartments, office spaces, educational institutions, healthcare facilities, and commercial developments across the city.
Our Projects in Kolkata
Dortec windows and doors are installed in some of Kolkata’s best-known residential developments:
- Merlin Urvan
- Merlin Elements
- Merlin 5th Avenue
- Primarc The Soul
- South City Retreat
- PS Abacus
- Ambey Gateway
- Aakash Riviera
- Protech Tarun Nagar
- Victoria Vistas
- Benchmark Aspire (ongoing)
- Khushi Altair (ongoing)
Visit Our Experience Centre in Salt Lake
See and operate the windows and doors before you decide. Our team can walk you through profiles, glass options, hardware and finishes for your project.
Dortec Experience Centre
Arch Water Front, 11th floor, Ring Road, GP Block, Sector V, Bidhannagar, Kolkata 700091
Phone: +91 98301 04515
Hours: Monday to Saturday, 10 am to 7 pm
How We Work
- Consultation: visit the Experience Centre or call us to discuss your rooms, openings and priorities.
- Measurement: we take accurate measurements of each opening. A site visit can be arranged on request.
- Design and quotation: we recommend the right system, glass and hardware for each opening and share a detailed quotation.
- Fabrication: your windows and doors are made to size in the factory, typically in 4-6 weeks once measurements are finalised.
- Installation: our certified installation team fits and seals every frame, usually over 3-4 weeks depending on the project.
- Handover: we check operation and sealing with you, backed by a fully transferable 10-year warranty on profile structural integrity and colourfastness, and a 1-year warranty on moving hardware and glass.
Areas We Serve in Kolkata
We supply and install across Kolkata and nearby areas, including Salt Lake, New Town and Rajarhat, Ballygunge, Alipore, Tollygunge, Behala, Howrah and the surrounding districts.
Why Choose Dortec?
Dortec is recognised among trusted aluminium window manufacturers in India, delivering premium fenestration solutions for a wide range of projects. We focus on quality craftsmanship, advanced manufacturing technology, and customer satisfaction.
Our commitment includes:
- Premium-quality aluminium profiles
- Modern design options
- Precision engineering and installation support
- Customised project solutions
- Long-lasting durability and performance
- Professional consultation and technical expertise
FAQ
How much do aluminium windows cost in Kolkata?
It depends on the system, size, glass and hardware. As a guide, regular aluminium sliding windows are about ₹700-900 per sq ft and thermal break sliding windows ₹1,000-1,500 per sq ft. Regular casements are about ₹900-1,100 per sq ft and thermal break casements ₹1,300-1,900 per sq ft. See our aluminium windows price guide for what drives the cost.
Do you have a showroom in Kolkata?
Yes. Our Experience Centre is at Arch Water Front, 11th floor, Sector V, Salt Lake, Kolkata 700091, open Monday to Saturday, 10 am to 7 pm.
Do you install in New Town, Howrah and the suburbs?
Yes. We supply and install across Kolkata, including Salt Lake, New Town, Rajarhat, South Kolkata and Howrah, and the surrounding districts.
Can you visit my site?
Yes, a site visit can be arranged on request. Call +91 98301 04515 or send an enquiry.
What warranty do you give?
Dortec gives a fully transferable 10-year warranty on profile structural integrity and colourfastness, so it passes to the next owner if you sell the property, and a 1-year warranty on moving hardware and glass.
How long does it take from order to installation?
Manufacturing typically takes 4-6 weeks once measurements are finalised. Installation usually takes 3-4 weeks, depending on the size and complexity of the project.
Get Expert Aluminium Window Solutions in Kolkata
If you are planning a residential, commercial, or architectural project, investing in high-quality aluminium windows can significantly improve aesthetics, comfort, and property value. Dortec provides modern aluminium window systems designed to meet the highest standards of performance and style.
Contact Dortec today or call +91 98301 04515 to discuss your project and discover premium aluminium window solutions in Kolkata that combine innovation, durability, and elegance.
