Yilabo kuphela abanelebula ye-UL abangabizwa ngomnyango womlilo we-UL, futhi ukumelana nomlilo kungafinyelela kumaminithi angu-120. Ingaphezulu lomnyango we-UL ongashisi limbozwe ngempushana ye-electrostatic polyurethane, futhi ingaphakathi ligcwele ipuleti eliwumgogodla we-perlite elingashi. Iqabunga lomnyango lenziwe ngensimbi, elingahlangabezana nezidingo zokuzinza kokumelana nomlilo, ubuqotho kanye nokushisa okushisayo phakathi nesikhathi esithile.