Stumbelbloc -The Ultimate DIY Construction System Complete 30-Mould Set (26 Full/4 Half) + Instructional USB.

Stop buying blocks—make them from your rubble.

The Stumbelbloc Mould Set empowers anyone to become a manufacturer – without specialist skills! This isn’t just a construction tool; it’s a sustainable housing solution designed to turn building rubble, sand, and stone into high-precision, load-bearing interlocking blocks.

The “Magic Ratio” Engineering:

We have sized this set specifically for the “One-Bag Batch.”

•  The Mix: 1 Bag of 42.5 MPa Cement + 2 wheelbarrows of sand + 2 wheelbarrows of 13mm stone.

• The Yield: This exact ratio perfectly fills the 30-mould set included in this kit. No leftover “half-batches” or wasted cement.

Why the Stumbelbloc System Wins:

• Interlocking Precision: Blocks are self-aligning. Just tap with a rubber mallet. You can build to roof height in a single day.

• Hollow Core Versatility: Ideal for Urban Farm growers! Use the hollow cores for Living Walls, hidden irrigation lines, or insulation for mushroom fruiting rooms.

• Structural Strength: Tested at 4.8 MPa (exceeding the 4 MPa SABS requirement).

• Thin-bed mortar: Uses 75% less mortar than traditional methods, dramatically cutting costs, only NHBRC-approved system in South Africa.

• Reduce waste: The Moulds can be used on-site to recycle building rubble in-situ.
• Reduce labour costs: House, walls, sheds, soak-aways, ponds, and much more can be built with unskilled labour ten times faster than conventional methods.

Stumbelbloc Interlocking Block System Features:

• • Ease of Use: The innovative Stumbelbloc plastic moulds are filled with a mix and left to dry, resulting in accurate hollow core blocks.
  • Self-Aligning: Just tap with rubber mallet to place vertical wall with minimal effort.
  • UV-Resistant: Made of thick virgin PP, in South Africa, these mould made to resist our harsh sun and physical impacts.
  • Labour: An average unskilled labourer can make up to 60 blocks a day using traditional hand mixing.
  • Production Unit: With basic tools and power, a small production unit can manufacture up to 250 blocks per day.
  • Quick Construction: A structure can be built to roof height in one day, taking full load immediately.

What’s in the Box:

• 26 x Full Block Moulds

• 4 x Half Block Moulds (Essential for corners and ends)

• Instructional USB: Step-by-step video guides on mixing, pouring, and dry-stack construction.

Sourcing & Logistics Note (The Drop-Ship Reality)

Shipping & Delivery: This item is a Direct-from-Factory shipment – shipping is included. Contact us for any spares required for tailored quote.