Reshaping the Future ofSustainable Construction
Learn MoreStrong Foundations, Stronger Futures
Discover the innovative world of “hahne”, a distinguished brand under Sievert 20Microns Building Materials Private Limited, dedicated to offering comprehensive construction chemical solutions.
Our products are engineered with advanced German technology, ensuring exceptional performance and durability for all your building needs, whether they are surface-level or deep within structural components.
Building Tomorrow,
Today with Innovation and Integrity
Our aim is to establish ourselves as a global leader in innovative construction chemical solutions by offering top-quality, sustainable products that improve everyday life.
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Sievert is the specialist for building material and logistics solutions. Every day, more than 1,600 employees work to offer our customers the best solutions and products for their construction projects and to enable intelligently networked logistics. With around 60 locations in Germany, Europe and China, we are internationally active. Our experts are always on hand with advice and support to implement our customers’ projects reliably and to a high standard of quality.
We are 20 Microns Limited, the pioneers in the field of Industrial Minerals in India, bringing the organized concept of Micronization and tapping various different Industrial Micronized and Sub-Micronized Minerals under its portfolio. Since few years back, 20 Microns also delved into the world of Specialty Minerals, Chemicals and Performance Additives catering to the niche segments and formulations made through advanced and superior technology to serve our existing and new customer base for diverse applications.
Researching Today for a Better Tomorrow
Sievert 20Microns Building Materials Private Limited combines decades of German expertise in building materials and construction chemicals coupled with decades of experience in the Indian market, with thorough expertise in raw materials and minerals. We are uniquely positioned to innovate and deliver high-quality, sustainable products.
Our Services, Your Success
Waterproofing
We offer highly specialized waterproofing solutions tailored to specific applications.
Surface Coating
We provide top-notch flooring solutions designed for both durability and aesthetics.
Concrete Repair
High-quality concrete is key to ensuring durability and safety.
Tiles Installation
We deliver smart, cost-efficient system solutions for all aspects of tiling.
Wall and Masonry
We offer premium solutions for walls and masonry.
Performance You Can See
Tiling Systems
St. Pauli Elbe Tunnel, Hamburg
Waterproofing Systems
Anhui Xiaxing Food factory, Lu’an
Waterproofing Systems
Observatory Potsdam
Plaster and Painting Systems
“B-UP!”, Frankfurt
Plaster and Painting Systems
Apartment House Popowice
Brick Facing Façade
5 Star Hotel The Bridge Wroclaw MGallery
Discover, Connect, Experience



Industry insights that matter
Step-by-Step Guide to Using Tile Adhesive for Floor and Wall Tiles
Read more →The Best Tile Adhesives for Bathrooms, Kitchens & Exteriors
Read more →Crack-Free Tiling: How the Right Adhesive Makes a Difference
Read more →Frequently Asked Questions
The quantity of tile adhesive you need depends on a few key factors: the tile size, surface area, surface condition, and installation method.
Skipping it may save a little now, but water damage can cost 10–12x more later. A quality solution prevents expensive repairs.
Yes, if the root cause is identified correctly and the appropriate waterproofing system is applied.
Crack filling is corrective, not a complete system. Full membrane continuity is required to prevent future ingress.