The patented EuroAm (Haener® Interlocking & Mortarless Concrete) Block System comprises interlocking blocks that "dry stack" (i.e. require no mortar) making it similar to a child's LEGO set. Plumbing and electrical conduits are placed in existing recesses within the wall so there is no chasing into the block and subsequent plastering. Holes are drilled with precision at the exact location an electrical or plumbing fixture is required. Therefore, if any electrical or plumbing changes are desired in the future, changes can be made easily as the exact location of the existing pipes or conduits is known.

With minimal training, unskilled labour can master the application of the EuroAm Block System very quickly. The EuroAm Block System can be laid up to five times faster than conventional blocks can be laid. As the blocks interlock, the walls will always be square and level as the unique tongue and groove design requires a tight fit before the next block is laid.

In addition, the EuroAm Block System far exceeds the strength of conventional block and mortar construction. The reason for this is that mortar has a maximum strength of 2-3 MPA, therefore the strength of a common block and mortar wall will theoretically not exceed this figure. (Note: In the case of an earthquake, it is generally the mortar that breaks, not the concrete block.) On the other hand, the strength of the EuroAm BlockSystem is at least 17 MPA and because the blocks interlock (i.e. no mortar used), the strength of this wall far exceeds one constructed with conventional materials.

Being a hollow core block the thermal and acoustic insulation is excellent. Furthermore, the solid construction technique satisfies the end-user's demand for a solid house built from "traditionally accepted" materials.

Columns are poured where needed. Concrete is poured around the window and door openings from within the wall using rebar in conjunction with inserts to prevent the concrete from spreading throughout the wall. The tie beam is poured by placing corner blocks upside down, thus eliminating the expense and downtime of carpentry to form the beam.

EuroAm designers and architects have guarded against the possibility of a "concrete barrack" development. The nature of the patented moulds facilitates the possibility of different colours and patterns on the various blocks.The roof tiles are also available in different colours. In addition, EuroAm's architects have designed a number of different elevations to distinguish each house.

The mechanical process uses proven hydraulics, thus eliminating the need for highly skilled personnel to operate the block production machinery. The rate of production is four blocks per drop, at seven drops per minute, or 1 680 blocks per hour. Working two 8-hour shifts 26 880 blocks can be produced per day, which equals 22 houses @ 42 square metres. Making allowances for breakdowns, inclement weather etc. one block making machine can easily provide enough blocks to build 5 000 houses per year.

The production capacity and the fact that lightly supervised unskilled labour can build a house in one day, makes this system one of the most viable solutions to the current housing crisis in Africa.