Izi zimagwiritsidwa ntchito kwambiri ku nyumba zamaofesi zanzeru za 5A, nyumba zophatikizika zamaofesi ect, zathetsa zofunikira zama waya, makamaka kulimba kwambiri komanso kutalika kwa nyumbayo.nthawi yomweyo kukweza kwa nyumba yakale, zomangamanga pansi, ntchito mkulu kachulukidwe kashiamu sulphate kapena zipangizo zina, gulu pansi amapangidwa apamwamba pamwamba ndi pansi kanasonkhezereka zitsulo encasement.M'mphepete zinayi zosindikizidwa ndi PVC edging strip komanso kusindikiza bwino.Zogulitsa zomwe zimakhala ndi mphamvu zonyamula kwambiri, zopanda madzi, zosawotcha, zosinthika bwino.Pansi pamwamba nsalu akhoza anaika mitundu yonse ya PVC kapena pamphasa lalikulu, unsembe yabwino, Pambuyo atagona pansi, kokha mokoma kukweza pansi akhoza kuyala ndi kusunga mitundu yonse ya mapaipi.