Diyama yacumuye icyuma ni diyama igizwe nigice kinini gishyirwa ku cyuma kibonye nyuma ya diyama na binder ikavangwa, igakanda kandi ikayungurura. Bitewe n'ubukomere bukabije n'ubugome bwa tile ceramic, iyo ukata, gutemwa bikunda. kubyara ibice byinshi kuruhande rwo gukata, bigatuma impande zomugozi zidahwanye kandi bigira ingaruka kumiterere.Kubwibyo, guhora-amenyo yometseho ibyuma bikoreshwa mugukata amabati.Ariko, mugihe cyo gutema, inkombe yicyuma izaramburwa kandi ihindurwe nuburwanya, kugirango imihangayiko ihangayikishije imbere yicyuma izunguza icyuma kandi ihindure ingaruka zo gutema.
Gukata ibikoresho: Bikwiranye na tile ceramic hamwe nigipimo cyamazi ya 5-20%.