Rau cov kav dej kub, cov kav dej kub, cov kav dej tsis tshua muaj kub thiab cov kav dej uas muaj kev tiv thaiv scalding thiab tiv thaiv kom tsis txhob khov, nws yog ib qho tsim nyog yuav tsum tau npog sab nraud ntawm cov kav dej nrog cov ntaub ntawv thermal rwb thaiv tsev kom tsis txhob poob ntawm cov cua sov (txias) hauv cov kav dej lossis khov. Rau qee cov kav dej uas muaj qhov kub thiab txias, cua sov thiab rwb thaiv tsev kuj tseem yuav tsum tau tiv thaiv cov kua los ntawm cov kua nplaum los yog khov thiab cuam tshuam rau kev thauj mus los. Feem ntau siv cov ntaub ntawv rwb thaiv tsev yog cement perlite, iav ntaub plaub, pob zeb ntaub plaub thiab asbestos diatomite.
