At its core, Stackcell’s plastic concrete formwork system consists of modular panels; a plastic spacer sandwiched between two 9 mm form-ply sheets, sized approximately 2820 mm by 600 mm and weighing just 24 kg. Created on-site by carpenters, each panel can be installed in about 8 minutes using a standard screw gun

This formwork is lightweight, flexible, and reusable, offering compelling alternatives to heavy steel, aluminum, or timber systems. Stackcell's system supports curved formwork, columns, beams, walls, and slabs; making it a versatile choice for diverse architectural needs

1. Speed & Efficiency

Utilising the Stackcell system transforms construction speed; developers achieve build cycles as short as 3.5 working days per apartment from slab to completion. The system’s "plug-and-play" nature means quicker assembly, earlier internal fit-out, and an uninterrupted workflow.

2. Automation with K.I.R.S.T.E.N

Stackcell’s proprietary planning tool, KIRSTEN, automates concrete pour scheduling; no phone calls or emails required. Concrete deliveries can be locked in months ahead, and the pour status is visible in real time to all stakeholders

3. Monolithic & Durable Structures

The permanent formwork yields monolithic walls and slabs; seamless, joint-free, and watertight. Walls achieve exceptional fire ratings (e.g., 140 mm yields 240/240/240; 4-hour performance) and robust structural integrity for seismic resilience and acoustic performance

4. Cost Savings & Sustainability

Developing with Stackcell can reduce structure costs by up to 30% and total project cost by 15–20% compared to traditional blockwork methods . The lightweight, reusable formwork reduces waste; 99% recycled; supporting more sustainable builds

5. Design Flexibility

Want unique building shapes? Curved façades, oversized beams (up to 600 mm), and columns are easily accommodated. No complex shop drawings are needed; design is limited only by imagination
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1. Design & Planning

Stackcell reviews project drawings and recommends optimal configurations; including wall thickness, reinforcement, and layout. Integration with KIRSTEN further streamlines the build plan

2. Formwork Supply or Full-Service Setup

Choose between a supply-only model (with training) or full-service roll-out. Even supply-only comes with fast onboarding; “It’s Lego!”

3. Concrete Placement

Using self-compacting concrete and boom pumps, they deliver accurate, dense pours quickly and efficiently; all tracked by the KIRSTEN platform

4. Internal Fit-Out

Once the formwork is in place, internal work can begin immediately due to the watertight nature of the monolithic structure 

Residential & Apartment Blocks:

Up to 12-storey buildings have been completed, including terraces and walk-ups


Basements & Retaining Walls, Lift and Stair Cores, Infrastructure (e.g., tunnels, walls) ; this system handles them all


High-Performance Structures:

Fire-rated, acoustic, and load-bearing walls; all in one robust monolithic concrete form
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1. How fast can you build an apartment using Stackcell?

On average, 3.5 working days per apartment from slab to completion

2. What formwork materials are used?

Injection-moulded plastic spacers combined with 9 mm form-ply, forming modular panels (~2820 × 600 mm, 24 kg)

3. Is curved formwork possible?

Yes; beams, walls, and columns, including curved shapes, are fully supported without bespoke shop drawings

4. Can I just buy the formwork material and use my team?

Absolutely; a supply-only model is available with training; “It’s Lego!”

5. What are the cost and sustainability benefits?

Structure costs can drop by 30%, total builds by 15–20%, and formwork is 99% recyclable; making builds faster, cheaper, and greener

If you're looking for formwork contractors or formwork suppliers who deliver speed, savings, and high-performance, connect with Stackcell Structures today:

Phone: +64 21 514 555

​Email: Brandon@stackcell.co.nz