Imyunyungugu ya polyester idahagije nimwe mubikunze gukoreshwa cyane bya termosetting hamwe nibikorwa byiza. Irashobora gukira mubushyuhe bwicyumba ikabumbabumbwa nigitutu gisanzwe, hamwe nibikorwa byoroshye, cyane cyane bikwiranye ninganda nini kandi ikorerwa ku bicuruzwa bya FRP. Nyuma yo gukira, resin ifite imikorere myiza muri rusange, indangagaciro yimikorere iri munsi gato ya epoxy resin, ariko iruta fenolike. Kurwanya ruswa, ibintu byamashanyarazi hamwe na flame retardant muguhitamo urwego rukwiye rwa resin kugirango byuzuze ibisabwa byamabara yumucyo, birashobora gukorwa mubicuruzwa biboneye. Hariho ubwoko bwinshi, bwahujwe cyane, kandi igiciro ni gito.