About us
Rock engineering for roads, bridges and towers across Sri Lanka.
A family of businesses built around one skill: removing rock safely, under licence and to programme.
Our story
From road building to rock engineering
SA Constructions was founded by our Chairman, Sydney Kulathilaka, in 2000. The company began in road construction, where rock on the alignment was a constant problem.
Building that capability in-house led the company into bridge construction, then into specialist drilling and blasting. To secure supply and control quality, the group became the authorised explosives dealer for the Central Province and opened its own safety fuse factory.
Today we work as the rock subcontractor on major road and expressway projects, including the A5 Gampola to Nuwara Eliya road and the Southern Economic Transport Expressway for China Harbour and the A10 Kurunegala to Katugastota road for China Jiulong, alongside transmission line foundations and post-cyclone bridge reconstruction.

Vision, mission and values
Vision, mission and values
Vision
To lead Sri Lanka in safe, precise rock engineering.
Mission
To put safety first on every site, lead with experienced and licensed people, and engineer every blast and structure to a written design, so clients can trust us with the whole rock package from permit to handover.
- 01
Safety
Everyone goes home safe. We plan, clear and sign off every blast.
- 02
Precision
Careful drilling and controlled charges, so we break only the rock that needs to go.
- 03
Integrity
We handle explosives strictly by the rules, record every issue and supply licensed buyers only.
- 04
Reliability
We turn up when we say we will and hand the site back on time.

Founder and Chairman
Sydney Kulathilaka
Founder and Chairman, SA Constructions
- Director, Tristar Explosives
- Former Director, Kurunegala Plantations
Sydney Kulathilaka founded SA Constructions in 2000. He is a Director of Tristar Explosives and a former Director of Kurunegala Plantations.
Group structure
One group, three businesses
Construction, explosives distribution and the safety fuse factory work as one group. Licences, supply and site work sit with the same management, so clients deal with one partner for the whole rock package.
- 01
Construction
Drilling and blasting, tower foundation rock blasting, road and bridge construction, and rock subcontracting.
Learn more - 02
Explosives distribution
Licensed distribution of explosives, detonators and blasting accessories to licence holders.
Learn more - 03
Safety fuse factory
Mawathagama Safety Fuse Industry, making safety fuse for licensed users since 2007.
Learn more