Designed and built in the USA

3D Concrete Printing Systems for Automated Masonry Construction

Turn-key 3DCP System

Certified printing mortar available nationwide. No middleman.

3DCP System

ATLAS

Request a quote

ATLAS Printer

$237K

Mortar Mixer Pump

$46K

3DCP Toolpath Slicer

$15K

Admix Dosing Pump

$8K

Project-based Training

$18K

Turn-key System

$324K USD · ex-works

250 mm/sStandard Printing SpeedProductive, continuous wall construction 17 mmStandard Layer HeightBalances speed, print quality and wall geometry 120 minExample Production Rateto print a 12 ft × 10 ft wall 2 PeopleTwo-Person OperationA small, well-trained crew

Automated Masonry Construction

Quality & Productivity

When the 3DCP hype ends, it's about quality and productivity.

Concrete Masons, First.

Our founding was based in traditional masonry and concrete trades. We understand the masonry and concrete construction process from direct experience. We're not trying to revolutionize structural engineering with "novel" ideas; we honor and value the legacy of concrete masonry construction.

Traditional Masonry Compliance Alignment

Engineering-First Construction Principles

First Principles over Hype

Design for Additive Manufacturing • Masonry Material Science • Electromechanical Engineering

Strong Material Science Focus

Proven Electromechanical Engineering

3DCP Sobriety

Over years of development and production of our 3DCP Systems, we've become weary of all the 3DCP hype. Too many loud claims and edited videos. We consider ourselves 3DCP Sober. We're first principles-based, from material to manufacturing.

ATLAS tower printer on a residential jobsite beside freshly printed walls

Print On-Site or In-Factory

Our system can be deployed on-site, or in-factory for environment-controlled production

Masonry walls printed in place on a residential slab

On-Site Printing

A crew setting factory-printed wall panels on a slab with a forklift and hoist

In-Factory Manufacturing

University students in hard hats watching the Build Additive gantry print a wall in a lab

Research and Development

Build Additive began supporting R&D in Higher Education

Single and Multi-Family Homes

Constructing permanent-material homes that provide lasting value

Masonry Home Construction

Our design and slicing workflow has been optimized for masonry walls for construction of permanent-material homes. Our integrated 3DCP system is built to deliver a strong combination of build volume, print speed, and design flexibility.

Single and Multi-story Homes

Single and Multi-family Structures

3D-printed masonry home with curved walls and round pavilions in the Arizona desert

A parametrically optimized concrete beam being printed, with the Build Additive nozzle carriage above it

Printed facade pilaster with a parametric surface texture on a finished building

Close-up of printed precast planters showing the layered surface texture

Not only Home Construction

Other 3DCP Applications

Parametric Design and Industry Applications

We are constantly impressed with new innovations and concepts for 3DCP applications. Our system and materials have been used to research material and design optimization across a range of civil engineering projects. We continue working with industry and educational partners to support their visions.

Material and Parametric Design Optimization

Applications in Precast Concrete

Tell us about your interest in 3DCP and the applications you're considering.

Tell us about your experience in construction.

Read about our 3DCP system:

Masonry has been building durable structures for thousands of years. What has changed is how we build it. Traditional masonry depends on skilled labor to place thousands of individual units. Build Additive applies automation to that process, using precisely controlled material deposition to construct complete wall systems directly from a digital building model.

Our goal is not simply to print walls. It's to automate the construction of high-performance masonry wall systems.

Every successful 3D concrete printing system begins with the material. Before a robot moves, before a nozzle extrudes, and before the first layer is placed, the mortar must be engineered to perform.

At Build Additive, we designed our system around Calcium Sulfoaluminate (CSA) cement technology because material performance determines everything that follows. Unlike conventional Portland cement systems, CSA-based mortars offer rapid strength development and reduced shrinkage—characteristics particularly valuable in automated construction. A printable construction material must satisfy four essential requirements:

Availability

Construction depends on reliable supply—not proprietary chemistry. Build Additive utilizes commercially available, certified CSA-based mortar from established supply chains. This allows projects to scale without depending on specialized materials that may be difficult to source or transport.

Mixability

Consistency begins in the mixer. The material must hydrate, disperse, and mix predictably within a continuous construction process. Consistent mixing produces consistent printing.

Pumpability

Material flow is everything. The mortar must move efficiently through the mixer, pump, hoses, and nozzle while maintaining stable flow and predictable pressure.

Buildability

Every layer must support the next. The material must be fluid enough to extrude while developing sufficient early strength to maintain wall geometry as additional layers are placed.

Available. Mixable. Pumpable. Buildable. Because when the material performs predictably, everything else becomes easier.

The motion system is the engine of every automated construction system. It determines how much can be built, how quickly it can be built, and how accurately material can be placed. While many construction printing systems adapt industrial robotic arms, Build Additive developed a purpose-built tower-based robotic platform specifically for construction. Our kinematics prioritize productive build volume, structural rigidity, precise material placement, efficient continuous wall construction, and rapid repositioning on the jobsite.

The objective is simple: Print more. Move less.

Build Volume

Every time a printer must be repositioned, production stops. Our tower architecture is designed to maximize the amount of wall that can be constructed from a single position, reducing interruptions and simplifying the construction workflow. More wall completed from one location means greater productivity and fewer opportunities for error.

Printing Speed — Built for Production

High robot speed alone does not build houses. True productivity comes from maintaining controlled, continuous material placement throughout the construction process. The system is designed to maintain productive printing speeds while preserving dimensional accuracy and consistent material placement.

Build Additive's standard printing speed is:

250 mm/s

Wall Geometry — Beyond Simple Wall Perimeters

A real masonry wall is more than two parallel shells. Structural walls may require internal webs, reinforced cells, insulation cavities, utility pathways, and bond beam configurations. Build Additive's motion system and slicer are designed to create these features as part of the printing process. The system can print structural webs perpendicular to the exterior shells at 250 mm/s, allowing internal wall geometry to be constructed efficiently rather than added later as a separate operation.

The goal isn't simply to print a shape. It's to build an engineered wall system.

It simply needs to improve how we build. Construction is one of the world's most regulated industries—and for good reason. A successful automated construction system must do more than produce an impressive demonstration. It must create buildings that can be designed, engineered, permitted, inspected, financed, insured, and occupied with confidence.

Build Additive approaches 3D concrete printing with what we call 3DCP sobriety. We are less interested in making construction look revolutionary than in making automation practical.

Alignment with Existing Building Principles

Rather than asking the construction industry to abandon proven methods, Build Additive is designed around established principles of structural design and masonry construction. Our objective is to use automation to improve the execution of construction while maintaining clarity around structural performance, wall geometry, reinforcement, inspection, engineering requirements, and building code compliance. Innovation is most valuable when it fits into the construction industry we already know.

Clarity of Deliverables

A successful construction system begins with a clear understanding of what will be delivered. Our digital workflow is designed to create predictable wall geometry and clearly defined construction outputs before printing begins. Builders, engineers, and project owners should understand what is being built—not simply watch a machine build it.

Define the wall. Define the process. Define the deliverable. Then automate the construction.

A Build Additive system is more than a machine that extrudes concrete. It is an automated masonry construction system designed to build complete wall assemblies. The printer can create exterior and interior wall shells, structural webs, reinforced cells, configurable cavities, bond beam geometries, and engineered wall configurations.

The precision and repeatability of automation are applied to the fundamental principles that have made masonry one of the world's most durable forms of construction.

Less repetition. More precision.

Printed masonry wall assembly with a window opening and lintel

Every feature of the Build Additive system is designed to improve one of three things: Quality. Productivity. Reliability.

Standard Printing Speed

250 mm/s

Designed for productive, continuous wall construction.

Standard Layer Height

17 mm

A layer height selected to balance production speed, print quality, and wall geometry.

Dynamic Automatic Leveling

0.1° Accuracy

Construction sites are rarely perfectly level. The Build Additive system dynamically compensates for printer position during operation to help maintain consistent layer geometry throughout the print.

Example Production Rate

12 ft × 10 ft wall in approximately 120 minutes

Productivity should be measured in completed construction—not simply robot travel speed.

Build Additive utilizes certified batched CSA mortar engineered for high-performance construction.

Strength Performance

3,000 PSI in 24 hours

5,800 PSI at 30 days

Rapid strength development allows the wall system to progress quickly while providing the long-term strength required for durable construction.

Interlayer Bonding

450 PSI Interlayer Bonding Strength

The connection between layers is fundamental to the performance of a printed wall. Our material and deposition process are designed to promote strong bonding between successive layers and create a cohesive wall system.

Minimum Layer Time

15 seconds

Each layer must be deposited within a controlled time window that balances two competing requirements: the previous layer must remain capable of bonding with the next, while the wall must develop enough early strength to support additional material. This balance between bonding and buildability is one of the fundamental engineering challenges of large-scale additive construction.

Structural Webs

Internal wall geometry should not require manual programming for every project. Build Additive's slicer can automatically install structural webs or create webs according to project-specific engineering requirements. The system automatically adjusts internal web geometry as the exterior wall shells change. This allows parametric wall designs to remain coordinated as dimensions and geometry evolve.

Change the wall. The internal geometry adapts.

Bond Beam Toolpaths

The slicer can generate bond beam toolpaths according to project specifications. Rather than treating every wall as a simple extrusion, the digital workflow is designed to translate engineering requirements into a construction-ready toolpath.

Auto-Resurrect Paused or Cancelled Prints

Construction does not always proceed perfectly. Power interruptions, material issues, equipment adjustments, or other jobsite conditions can interrupt a print. Build Additive's control system is designed to recover from paused or cancelled operations without automatically requiring the entire print to start over. The system can reconstruct the completed print geometry and allow the operation to resume from the appropriate location.

Interruptions shouldn't always mean starting over.

Toolpath Recompiling

A construction printer must be capable of operating in the real world—not just from a fixed position in a factory. After repositioning the printer, the system can recompile the toolpath to account for the printer's new location. This reduces the need for extensive manual reprogramming between printing positions.

Rapid Repositioning

The system can be repositioned and the toolpath tuned in approximately:

20 Minutes

The objective is to minimize downtime between printable areas and maintain construction momentum throughout the project.

Build Additive is designed to operate with a small construction crew. Automation is most valuable when it reduces repetitive labor without creating a new layer of operational complexity. The goal is not to replace construction knowledge with complicated technology.

The printing system can be operated by:

2 People

The goal is to give a small, well-trained crew the ability to produce more.

Contact Us

Prefer to talk? Call or email and we'll get back to you.

+1 (334) 216-7471 info@buildadditive.com

Office

21415 Civic Center Dr
Suite 100
Southfield, MI 48076

Factory

708 S. Three Notch Street
Troy, AL 36081