Amafasitela angenafreyimu athatha yonke imilimitha yokugcina yemibono engaphandle. Ukuxhumana okungenamthungo phakathi kwengilazi kanye negobolondo lesakhiwo kudala ukubukeka okuyingqayizivele ngenxa yokushintsha okubushelelezi. Ngokungafani namafasitela avamile, izixazululo ze-LEAWOD zisebenzisa uhlaka lwe-thermla break aluminiyamu.
Kunalokho, amaphaneli amakhulu abanjwe kumaphrofayili amancane afihliwe ophahleni naphansi. Umngcele we-aluminium omuhle, ocishe ungabonakali usiza ekwakheni ukwakheka okuncane, okubonakala kungenasisindo.
Ubukhulu be-aluminiyamu buyindima ebalulekile ekuqiniseni ubuqotho besakhiwo kanye nobude besikhathi samafasitela. Njengoba inobukhulu obungu-1.8mm, i-aluminiyamu inikeza amandla angavamile, okuqinisekisa ukuthi amafasitela angakwazi ukumelana nemimoya enamandla, imvula enkulu, kanye neminye imimoya yangaphandle engase ihlangane nayo ezindaweni ezisogwini.