Robotic plastering and painting · India and GCC

Make construction faster, safer & automated.

KANSTRAXN is developing robotic machines that plaster and paint interior walls, so contractors can finish more wall area with fewer workers.

See the machines
Stage Design finalised and analytical proof complete (TRL 3). No hardware test yet. Prototype planned for 2027.

The machines

Two machines, five attachments on one machine frame.

Plastering and painting are two attachments on the same frame. The figures below are modelled from our market study and will be confirmed by prototype testing.

Plastering

Robotic plastering machine

Automated cement plastering for interior walls.

Output per shift
25.2 m²
Workers replaced
2.5 per shift
Utilisation assumed
70%
Working days a year
300

Painting

Robotic painting machine

Automated wall painting on the same frame.

Output per shift
130 m²
Workers replaced
5 per shift
Utilisation assumed
70%
Working days a year
300

Key features and benefits

Faster finishing, consistent quality, less risk at height.

CAD view of the machine frame with its raised work platform and tool carriage
Machine design, CAD view.

3–5×

Productivity gain

Covers far more wall area per shift than a manual team. Modelled, to be confirmed by testing.

Zero

Scaffolding needed

The machine works at height from its own frame, up to 12 ft.

5

Process heads

Mortar spraying, plaster finishing, grinding, painting and drying, all on one frame.

Consistent

Finishing quality

Controlled spraying and passes reduce human variation, so output is the same from pass to pass.

Lower

Operating cost

Fewer workers, less mortar and paint waste, and faster project completion.

Smart

Monitoring

Tracks surface area covered per shift and material use, and sends productivity data to the owner's phone.

Attachments

One frame, five process heads.

The same frame takes each head in turn. A contractor adds a head to the frame rather than buying a separate machine for each task.

Mortar spraying unit
01 · Plastering

Mortar spraying

A mixing pump delivers mortar continuously to the spray nozzle.

Plaster finishing blade unit
02 · Plastering

Plaster finishing

A blade unit makes automated passes for an even plaster thickness.

Surface grinding unit
03 · Preparation

Surface grinding

Grinds the wall surface flat before painting.

Painting mechanism
04 · Painting

Painting

A paint mechanism applies the coat across the wall in automated passes.

Drying unit, exterior view
05 · Finishing

Drying

Heat radiation and hot air dry the painted wall.

  1. Self-levelling railPlanned: one switch starts a levelling cycle that sets the guide rail level on uneven floors.
  2. Self-driving travelPlanned: the machine moves along the rail under motor control and stops at set work positions.
  3. Frame detectionPlanned: sensors or a camera find door and window frames, and the controller leaves those areas untouched.

Design targets for the current frame, not tested values: weight 130 kg, power 2 kW, working height up to 12 ft.

Why now

Labour is short. Walls still need finishing.

6.9%

Indian construction growth

India's construction market is forecast to grow about 6.9% a year to 2034.

4.7%

GCC construction growth

Saudi giga-projects and other Gulf builds add demand for finishing capacity. GCC export is planned after the Indian launch.

Skilled hands are scarce

Plastering and painting are repetitive, physical work that is hard to staff. Contractors also face rework when finish quality varies between workers.

Intellectual property

A filed patent, with an international filing in progress.

The patent application covers the robotic finishing system. A PCT filing is in progress to extend protection to export markets, including the GCC.

Patent application, India IPO App. No. 202641006334

Our vision

Make construction faster, safer, and automated.

Short term

Launch and serve

  • Launch India's first integrated wall automation machine, made in India.
  • Launch the ceiling processing machine.
  • Serve Tier 1 and Tier 2 contractors at scale.
  • Build a strong, patent-protected product position.
Long term

A construction automation ecosystem

  • Expand into a full construction automation ecosystem.
  • Add automated wall channel cutting for MEP installations.
  • Explore global markets after India validation.
  • Become the category leader in construction robotics, and champion Atmanirbhar Bharat.

Company

KANSTRAXN Robotics Private Limited

A private limited company incorporated in Karnataka on 6 November 2026. We are building robotic finishing equipment for contractors in India and the Gulf, with pilots planned on Tier 1 contractor sites in Bengaluru and Hyderabad.

Contact

KANSTRAXN Robotics Private Limited
Ground Floor, North East corner, Shop 17
Mysore South, Mysore
Karnataka 570008, India

Email: kanstraxnrobotics@gmail.com

Corporate identity number

U43300KA2026PTC230893