Ny varavaran’ny afo dia manana ny toetran’ny lanjany maivana, ny tanjaka avo, ny hamafin’ny tsara, ny insulation afo sy ny hafanana, ary ny fanorenana mety. Ny fitaovana ampiasaina amin’ny varavarankelin’ny afo dia tsy maintsy mahatohitra ny fandoroana sy ny hafanana ambony, tsy vitan’ny hoe tsy mamoaka entona misy poizina ny tenany, fa afaka manakana ny entona misy poizina tsy hiditra.

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