Interlocking & Compressed-Earth-Block Production
Make interlocking earth blocks that actually pass — master the 28-day cure that decides strength, price around volatile cement, and win a sell-and-educate market with proof, not a machine you were promised would print money.
by Sankofa Skills Studio · vetted expert author
What you'll gain
Run a block yard the honest way. Learn the spine most beginners miss — it is a thin-margin manufacturing business where the 28-day cure, not the machine, makes the strength, and sun-drying is the number-one reason blocks crumble. Select graded laterite (never topsoil), mix 7–10% cement, and cure properly; then size the machine to real demand and budget the multi-million-naira cement float most funded yards forget. Win a sell-and-educate market with a demo wall and lab certs, and refuse every “buy our machine, we guarantee your contracts” scam.
Pass a real exam and earn a publicly verifiable certificate employers trust.
Unlimited practice mode + spaced-repetition flashcards, then unlimited exam retakes.
Keep the lessons and every future update to this course, forever.
What you'll cover
7 modules · 16 lessons · timed certification exam
1. Module 0 — The Honest Reframe 3 lessons
What block production really is: a thin-margin manufacturing and selling business where quality is everything, cement rules the cost, and you must sell and educate.
- What this business really is · 8 min
- Meet Chidinma and Musa: two honest tracks · 8 min
- Why block yards fail · 7 min
2. Module 1 — The Product & Choose 2 lessons
What interlocking/CEB blocks actually are, how a mortarless wall really works, and choosing your product, buyer and machine tier.
- What these blocks actually are · 9 min
- Choose your product, buyer and machine tier · 8 min
3. Module 2 — The Craft 3 lessons
Select and test the soil, get the cement and moisture right, press well, and above all run the 28-day damp cure that decides strength — then test the block.
- Select and test your soil · 10 min
- Cement, moisture and pressing · 9 min
- The 28-day cure and testing the block · 10 min
4. Module 3 — Kit & Capital Tiers 1 lessons
Machine tiers and prices (genuine Hydraform is quote-only), output vs nameplate reality, the curing yard, and the cement working-capital float that decides everything.
- Machines, the curing yard and the cement float · 11 min
5. Module 4 — The Money 2 lessons
A fully-loaded cost-per-block dominated by cement, the price sensitivity that flips the P&L, a stress-tested profit-and-loss, and the delivery-radius logic of a heavy product.
- Cost per block and the price that flips everything · 9 min
- The P&L, the stress test and the delivery radius · 10 min
6. Module 5 — Secure the Sale 2 lessons
Win a sell-and-educate market with proof, get houses approved, promise the durability detailing that stops "melts in the rain", and target the buyers who actually buy.
- Sell-and-educate: proof, standards and approval · 10 min
- Durability, detailing and who actually buys · 8 min
7. Module 6 — Fund, Launch & Don't Get Scammed 3 lessons
Real training and finance versus hype, the Scam & Failure Museum, the viability/scam decision tree, and a dated 90-day launch plan.
- Real support, and the Scam & Failure Museum · 10 min
- Your 90-day launch plan and capstone · 8 min
- After your certificate: what to carry forward · 6 min
Frequently asked
Is the certificate verifiable?
Yes. Every certificate carries a unique ID and a cryptographic signature. Anyone — an employer or a client — can confirm it instantly on our public verification page, with no login.
Who teaches this course?
A vetted expert author — Sankofa Skills Studio. Every expert course is reviewed and fact-checked before publication, and the author earns a revenue share on your enrolment.
How long do I have access?
Lifetime. Once you enrol you keep access to the lessons, practice mode and flashcards — including future updates to this course.
What happens if I don't pass the exam first time?
You can retake it. There's no attempt limit, and practice mode lets you rehearse with the same verified question bank until you're ready.
Can my team enrol together?
Yes. Talk to us about group and organisation rates — certifying a whole team is faster and cheaper than one at a time.
Continue your path
Learners taking this course often go on to: