Calankeena calamada calanku waa cabbirro kala duwan oo laga dooran karo, oo u dhexeeya 4'-18' dherer.U cusboonaysii calan laba-geesood leh.Tiir kasta wuxuu la imaan karaa kiis la cusboonaysiiyay iyo saldhig.Baallaha caadiga ah waa aluminium iyo tiirarka fiberglass ah oo u adkeysanaya ilaa 30mph dabaysha.Baallaha calanka ah ee loo yaqaan 'Premium tiles' waxaa lagu sameeyay tiirarka muraayadaha ah ee hawada u adkeysanaya ilaa 63mph.