Preliminary Budget — Fired Interlocking Brick Production Cell

Status: preliminary working model. These are planning estimates only. They still need vendor quotes, local price checks, pilot production data, and financing review.

This version does not assume the project is definitely distributed. As the production line has grown, the safer working description is a cell-based fired-brick production model. One cell could be deployed locally, regionally, or as part of a larger centralized plant. The right siting model still needs to be decided.

1. The basic question

At an 8 million brick-per-year production scale, can the unit economics work?

The value is not mainly from carbon credits or environmental branding. The value is from the installed wall system: no mortar, less skilled masonry labor, faster wall assembly, tighter dimensional control, repeatable interlocking units.

The brick may cost the same as, or more than, ordinary fired brick. The customer may still save money because the wall is cheaper to build.

2. Working production cell

One production cell is currently assumed to produce about 8 million fired bricks per year.

This lower target makes the original four-kiln planning assumption less aggressive, but the kiln count still depends on actual kiln capacity, firing cycle, downtime, dryer throughput, and saleable yield.

The working cell includes: VSBK-style kiln capacity, one forming line, drying before firing, post-fire grinding or rectification, quality inspection, conveyors and handling, local labor, and process monitoring.

The original model assumed four twin-shaft VSBK kilns and a fairly advanced inspection system. The kiln count has not been confirmed. It should remain a validation item until actual shaft capacity, firing cycle, downtime, saleable yield, and dryer/feed rates are known.

3. Capital cost range

The present capital estimate is wide because several major items still need real vendor pricing.

A reasonable middle estimate is about $900,000 per production cell. That number is not yet bankable. The biggest unknown is the rectification line.

4. Operating cost per brick

The current rough operating-cost estimate is about 3¢ to 7¢ per brick before capital recovery. After adding simple capital recovery, the working fully loaded cost becomes roughly 4¢ to 8¢ per brick.

The lower 8 million brick output increases capital recovery per brick slightly. At the $900,000 midpoint over 10 years, capital recovery is about 1.1¢ per brick instead of about 0.9¢. This does not yet include financing cost.

5. Why the brick may sell above ordinary brick price

The product should not be sold mainly as a carbon product. The better sales argument is: the finished wall may cost less, even if the brick costs more.

A normal wall requires bricks, mortar, skilled masons, more time, and more field variability. A dry-stack interlocking wall can reduce or remove some of those costs.

So the price argument is not simply "Is this brick cheaper than local brick?" The better question is "Is the finished wall cheaper, faster, and easier to build?"

6. Selling price assumptions

The current model uses a broad sale-price range of 10¢ to 15¢ per brick. This is only a placeholder. It must be checked against local fired-brick prices and the real value of labor savings.

Basic pricing logic:

• Low case: sell near ordinary fired-brick price.
• Base case: capture some dry-stack value.
• High case: capture more of the labor and speed advantage.

The project should not depend on carbon credits to make the brick sale work.

7. Simple return picture

Using 8 million bricks per year:

These numbers are directional. They are not underwriting numbers.

The two numbers that matter most are saleable yield after firing and grinding, and actual sale price achieved in the local market.

8. Financing and leverage

The model appears strongest if it works without debt. If the project works on an all-cash basis, then debt can improve equity returns. But debt should not be used to hide weak unit economics.

The safe statement is: the project should first be tested as an unlevered production business. Leverage may improve returns later, but only after yield, pricing, and equipment cost are confirmed.

9. The main risks

The main risks are not theoretical. They are practical.

• Biggest risk — saleable yield. If too many bricks crack, overfire, underfire, distort, or fail quality checks, margin falls quickly.
• Second risk — realized price. The product only works if customers value the dry-stack wall savings enough to pay the required brick price.
• Third risk — rectification cost. Grinding may be necessary for tight tolerances. But the cost of the grinding line and wheel wear must be confirmed.
• Fourth risk — forming and drying. The forming method and drying system are not optional details. They determine throughput, breakage, and capital cost.
• Fifth risk — fuel. Fuel choice affects firing control, operating cost, carbon claims, and site selection.

10. Working assumptions and remaining evidence

This section should not read as though the project has no plan. Several major choices now have a working direction. What remains is to confirm pricing, throughput, and yield with vendors and pilot data.

Current working assumptions:

• Output target: 8 million fired bricks per year.
• Forming method: Chinese vacuum extrusion line as the working budget basis. JC Steele / Direxa remains the premium benchmark, not the base equipment assumption.
• Drying method: controlled heat drying before firing, preferably using kiln waste heat where practical.
• Kiln basis: four twin-shaft VSBK kilns as the current planning assumption for the 8 million brick/year target.
• Rectification: post-fire grinding / dimensional correction remains part of the product strategy because dry-stack/interlocking brick requires tight tolerances.
• Quality strategy: simplified operator rejection plus rectification should be considered before assuming a fully integrated high-cost inspection station.
• Market logic: the product sells on lower installed wall cost, not on carbon credits.
• Carbon: carbon remains possible upside only, not base-case revenue.

Items still needing evidence:

• Vendor quote for the Chinese extrusion line, including dies, vacuum system, shipping, installation support, spares, and commissioning.
• Vendor quote for the rectification / grinding line, including throughput, wheel life, replacement cost, dust control, and maintenance.
• Dryer sizing and drying-cycle confirmation for the selected clay/laterite and target daily output.
• VSBK capacity confirmation for the selected kiln design, including daily output, firing cycle, expected downtime, and shaft loading pattern.
• Representative laterite test results, including extrusion behavior, drying shrinkage, firing response, absorption, strength, cracking, warping, and overfiring risk.
• Pilot yield data showing how many bricks survive forming, drying, firing, sorting, and grinding as saleable units.
• Local market check for fired-brick price, labor cost, mortar cost, wall-building speed, and achievable dry-stack premium.
• Final siting choice: local, regional, or centralized production, based on equipment scale, fuel, labor, logistics, and buyer concentration.

11. Plain conclusion

The project may work at an 8 million brick-per-year target, but the correct production layout has not yet been proven. The equipment line is now large enough that the plant could be local, regional, or centralized depending on fuel, labor, logistics, buyer concentration, and transport cost.

The production line has grown. That means the first decision is no longer simply "many small plants." The better question is: what is the smallest practical production cell that can make about 8 million high-quality interlocking fired bricks per year at a cost customers will pay?

If the production cell works, deployment could still occur close to local housing demand. However, the final siting model should come from the equipment, kiln count, labor, fuel, logistics, and market data — not from an unsupported assumption about plant size or location.