Ɗaya daga cikin mafi yawan lokuta da aka gano-bayan kammala kayayyakin don bango na waje na gida ne. Lokacin da akwai tambaya game da ƙarin murfin thermal na ganuwar, dole ne a yanke shawarar abin da za a zaɓa mai zafi a karkashin siding .
Rashin murya mai zafi ga gidan a karkashin siding shine irin kayan da ake yi da ulu da gashi (iri daban-daban) da kumfa.
Abin da rufi ya kamata in zabi?
Mafi haɗuwa a karkashin siding shi ne wanda ya fi dacewa, ba mai konewa ba, yana da mahimmanci don a saka shi da wani ɓangaren ƙananan, ba tare da rabuwa ba, yana da babban haɓakaccen thermal, ba ya da shekaru, kuma yana da siffar barga.
Irin wannan rufi na ganuwar a karkashin siding, kamar yadda filasta filastik (ko polystyrene ) shine mafi sauki, idan aka kwatanta da wasu nau'o'in wutan lantarki. Mafi sau da yawa ana amfani dasu don yin amfani da tsabar kafa a karkashin siding, wannan shine saboda ƙurar ba ta wuce ruwa ba kuma tana da matsayi mai girma. Wannan abu ba shi da ɗan gajeren lokaci, yana da wuya ga tsufa da kuma lalata. Har ila yau, ba na'urar mai kyau ba ne.
Mafi yawan tsaftacewa mai mahimmanci a ƙarƙashin siding shine ulu mai ma'adinai, ya dace da murfin ganuwar kowane abu: tubali, itace, kankare. Zai fi kyau a yi amfani da kullun auduga, yana da wuya a ɗauka da kuma tsawon lokacin da ya zubar da bango, kuma yana da nau'i na shinge, mai tsabta, an fi da shi a haɗe kuma an ajiye shi a kan tsararru.
An yi amfani da ulu mai laushi da aka yi da cellulose, saboda amfani da borax da boric acid a cikin abun da ke ciki, an yi la'akari da shi a matsayin mai kyau na jiki, ba a juya ba, kuma ba shi da konewa.
Dukansu gashi da ma'adinai na ma'adanai suna daidai da zafin rana da sauti. Iyakar matsalar matsalar kudi shi ne gyara, yana buƙatar kayan aiki na musamman, tare da taimakon abin da ake amfani da shi akan ganuwar.