I-Fiberglass yimathiriyeli eguquguqukayo esetyenziswa kuluhlu olubanzi lwamashishini ngenxa yamandla ayo aphezulu, ukuqina kunye neempawu zokugquma kwe-thermal. Imveliso yefiberglass ibandakanya iinkqubo ezininzi eziphambili, kubandakanya imathiriyeli ekrwada, ukunyibilika, ukumila kunye nokuveliswa kwemveliso yokugqibela. Kweli nqaku, siza kuphonononga amanyathelo emveliso ye-fiberglass kwaye sixoxe ngeendlela ezine eziphambili zophuhliso lweshishini le-fiberglass: imveliso eluhlaza kunye nekhabhoni ephantsi, ukwenziwa ngobukrelekrele, ukudalwa kwexabiso leshishini, kunye nobunkokeli bamazwe ngamazwe.