Le Mveliso isetyenziswa ngokubanzi kwizakhiwo zeofisi ezikrelekrele ze-5A, izakhiwo zeofisi ezidibeneyo, i-ect, isombulule iimfuno zocingo, ngakumbi ukuqina okuphezulu kunye nokuphakama okuphezulu kwesakhiwo.ngexesha elifanayo ekuphuculweni kwesakhiwo esidala, ubunjineli bomhlaba, usebenzisa i-calcium sulphate ephezulu okanye ezinye izinto, ipaneli yomgangatho yenziwe ngekhwalithi ephezulu kunye nezantsi kwentsimbi yentsimbi.Imiphetho emine itywinwe ngomtya wokuhlela wePVC kunye nokutywinwa okuhle.Iimveliso ezinomthwalo ophezulu wokulayisha, zingangeni manzi, zingenamlilo, zitshintshiselana kakuhle.Umgangatho welaphu lomphezulu unokubekwa zonke iintlobo zePVC okanye ikhaphethi yesikwere, ufakelo olufanelekileyo, Emva kokulala phantsi, kufuneka uphakamise ngobunono umgangatho unokubeka nokugcina zonke iintlobo zemibhobho.