Dortec is a leading supplier of premium aluminium windows in Kolkata offering modern aluminium doors, sliding systems, slimline windows, and customized architectural solutions across India. Our advanced aluminium fenestration systems combine durability, elegant design, energy efficiency, and long-lasting performance for residential and commercial projects.
View Our ProjectsOur goal is to design places that make a positive difference in the world. That’s why people are at the heart of everything we do.
Our work enlivens neighborhoods, builds communities, energizes the citizenry, and respects and protects our planet.
We begin with detailed planning, including site analysis, architectural design, and budget estimation, ensuring a solid foundation for your project.
Accurate cost estimation ensures transparency and budget alignment, setting the stage for a successful project.
Our skilled team brings the project to life, adhering to the highest quality standards and ensuring timely completion.
Once completed, we carry out a thorough inspection to ensure everything meets our quality standards and deliver the home ready for you to move into.
Whether in Kolkata, Bhubaneswar or a Tier-2 city, access our factory-direct quality through our network of showrooms and authorized partners across 50+ cities.
A window is only as good as its fit. Our certified technicians use laser leveling and ISO-standard protocols to ensure an airtight, perfect install every time.
We don’t just promise; we guarantee. Enjoy a fully transferable 10-year warranty.
Transform your home with India's finest aluminium window and door systems. Our experts will help you choose the perfect solution for your needs.
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