The go to name for your Home Improvement Needs

Founded in 1968, Three Sinha, a household name in Sri Lanka, has an impressive 55-years legacy of partnership with our customers, solving their toughest problems in the construction industry. We are proud of our reputation as a solution provider and as an innovator in the market. Our corporate culture is based on dedication, respect, and continuous improvement. We have ventured into diverse areas in the construction industry such as Steel Building and Roofing, Roller Doors and Roller Shutters, Steel and Aluminum Fabrications, Stainless Steel Railings, etc. At Three Sinha, we have a clear vision for the future and understand how to react to the ever changing environment. Our goal is to provide customers with the most convenient and effective source of basic, high-quality pre-engineered and pre-fabricated steel buildings and related construction products. We develop or acquire relevant information, engineering know-how, state-of-the-art manufacturing techniques, and delivery systems continuously. Our Success is measured by how well we satisfy our customers’ requirements and their success.

We are committed to remaining accessible and responsive to them. In order to be better prepared to serve our customers, Three Sinha is investing in its employees, internal processes, tools, and business systems. We are strengthening our existing core competencies as well as investing in the development of new capabilities to meet the increasing demand of our customers.

Three Sinha strives to be recognized as an employer of choice and has established programs designed to attract and retain a highly skilled and motivated workforce. Our people are our greatest asset. We are working as hard as we can to give you the highest quality products, the best value for your money, the most convenient way to shop, and the strongest security possible. Buy your construction requirement from Three Sinha. It is the right choice.

Our Vision

Three Sinha Group is committed to providing with continuously improved means, strategies and products that will help to improve the net worth in business accomplishments, enhance family security and help to create prosperity to the lives of our patrons, whilst enjoying ourselves in the process.

Our Mission

Three Sinha Group constantly strives hard to be the most creative and sustainable solution provider in our lines of business. We are engaged in steel buildings and roofing, roller doors and roller shutters, steel and aluminum fabrications and stainless steel railings in the construction industry.


Manjula Ariyakumara

Managing Director

Chamila Yurangani

Head of Human Resources

Tecla Thirananagamage

Factory Manager


Senior Accountant,
B.Sc(Accountancy) USJP,CBA

Sarath Padmasiri

Accountant, BS.C(Bus.Ad) SAT Chartered Finalist 

Hemantha Rajapaksha

HR Manager

Ravindu Arachchige

Operations Manager – Sales

Kaushalya Rathnasiri

Business Development Manager

Sameera Nilwala

Operations Manager – After Sales, MBA(UK),CPM(ASIA),PGDIPM(SL)


B.B. Kumara

Branch Manager – Kanady

S.K.S. Dilruk

Branch Manager – Matara

Prasanthika Hemachandra

Brach Manager – Negombo

T.A.C. Nilukshi Kasuhalya

Branch Manager – Kottawa


Our Achievements

INCO Premier Industrial Exhibition Awarding Ceremony

Gold Award - Best Inquiry Management System - 2023

Sri Lanka Institute of Architects Awards

Best Awarded Door Supplier - 2023

CNCI Achiever awards

CNCI Achiever awards 2019
CNCI Achiever awards 2018
CNCI Achiever awards 2017
CNCI Achiever awards 2016
CNCI Achiever awards 2015
CNCI Achiever awards 2014
CNCI Achiever awards 2013

Entrepreneur of the Year

Entrepreneur of the Year 2018
Entrepreneur of the Year 2016
Entrepreneur of the Year 2016
Entrepreneur of the Year 2015
Entrepreneur of the Year 2014
Entrepreneur of the Year 2013

Product Award – SLIA

Product Award – SLIA 2018
Product Award – SLIA 2016
Product Award – SLIA 2013

Customer Testimonials

The ThreeSinha Folding Door is best in quality and extremely easy to operate. They have provided us with the required technical support whenever needed. ThreeSinha industries gave us the best solution for our Folding Doore requirement. I strongly recommend ThreeSinha to anyone.
Asantha Karunarathne
Senior Manager- Merchandising
Singer (Sri Lanka) PLC
We have been dealing with the ThreeSinha Group for the last 10 years and have recognized them as a trusted business partner. We have purchased various products and services offered by ThreeSinha and we are highly satisfied of the quality, durability and reliability.
Dr. D.K. Rajapaksa
D. Samson Industries
ThreeSinha Folding Door is best in quality and extremely easy to operate. Also, ThreeSinha have provided us with the required technical support whenever needed. I strongly recommend ThreeSinha to anyone.
Hussain Sadiq
Deputy Managing Director
ThreeSinha Industries ia the leading company for roller doors in the Sri Lankan market. ThreeSinha has good customer satisfaction and many Sri Lankan households, companies, apartments and corporates use their products. I have no hesitation in recommending ThreeSinha to my clients.
Ashani Goonewardena Elwalagedara
Interior Designer
ON Design
For over a decade Hanco Constructions has been working closely with ThreeSinha in various projects and events. ThreeSinha provides high-quality Roller Doors alongside other products, as well as professionaly done services. Their business credibility and work ethic are commendable.
Managing Director
Hanco Constructions (PVT) LTD

Concept Center - Colombo

Three Sinha - Kottawa

Factory & After Sales Department

Three Sinha - Kandy

Three Sinha - Negombo

Three Sinha - Matara