WLTR Masonry Robot

green.build (Wienerberger AG subsidiary) · Masonry · Shipping since 2020

10 Confirmed Deployments

8 Unique Customers

Last updated: 2026-05

Summary

The WLTR is a wheeled, tethered-electric masonry robot that autonomously lays Porotherm Robot Ready bricks to construct load-bearing and partition walls up to 3.5 m high. It covers one subtask within masonry: unit placement of brick and block, using Dryfix adhesive foam or thin-bed mortar on a 125 mm modular system; all finishing, pointing, lintels, and complex geometry stay with the crew. The WLTR has been shipping since 2020, with 10 confirmed deployments across Czech Republic, Poland, Hungary, Slovakia, and the UK, operated as a Robot-as-a-Service by green.build, a Wienerberger AG subsidiary.

WLTR Masonry Robot video

Unit Placement (Brick/Block/Stone)

How it works on your site

Unit Placement (Brick/Block/Stone)

The WLTR picks Porotherm Robot Ready bricks from pallets positioned alongside the wall line, places them per the virtual wall model loaded on the operator's tablet, and bonds each course with Dryfix adhesive foam or thin-bed mortar. A cross-line laser maintains horizontal alignment while onboard sensors monitor wall parameters in real time. One operator controls the robot via tablet while a supporting worker manages material supply; corners, lintels, and openings remain crew work.

How it worked on other sites

Public utility · Pelhrimov, Czech Republic · 1,873 m2 brickwork

10-week completion against 14-week standard schedule, using 3 robots simultaneously.
Sustained throughput of 5.9 m2/h across the full 1,873 m2 scope.

Public utility · Cheb, Czech Republic · 1,069 m2 brickwork

4-week deployment with a single robot at 5.2 m2/h sustained rate.
1,069 m2 of brickwork completed on a single-robot configuration.

Industrial · Prague, Czech Republic · 1,650 m2 brickwork

5-week completion against 6-week standard schedule, using 2 robots.
Throughput of 6.4-7.0 m2/h recorded across seed and updated reference data.

Robot also used by

Aloys Klar Kindergarten

Berill Hazepito Kft

University of South Bohemia

Will it work on your site

Operating weight 2,500 kg 15 kN floor load capacity required

Working height 3.5 m 5 m upgrade in testing

Power Tethered; 3x 400 V AC 32 A 1.5 kW average consumption

Working footprint 3.7 x 2.05 m 0.78 m wide in transport mode

Clear space 5 m parallel to wall None

Column spacing 4 m minimum axial None

Throughput Up to 10 m2/h 200 m2/day reported across multiple deployments

Operator 1 operator + 1 material handler green.build supplies trained operators under RaaS

BIM/CAD BIM-compatible Specific formats (IFC, Revit) not stated

Environment Outdoor; all-weather operation reported Requires electricity and water supply on site