Because of the great gains in durability un-stabilized bricks are only used where nothing is available to stabilize the bricks. In addition to stabilization, the earth the bricks are to be made from is calibrated for durability, workability, and survivability.
Kwa sababu ya faida kubwa katika uimara wa matofali yasiyoimarishwa hutumiwa tu ambapo hakuna kitu kinachopatikana ili kuimarisha matofali. Mbali na uimarishaji, ardhi ambayo matofali yatatengenezwa kutoka kwayo inasawazishwa kwa uimara, uwezo wa kufanya kazi, na kuendelea kuishi.