The bottom of the resulting thermally isolate and LECA Styrofoam (polystyrene foil to protect against puncture by LECA . LECA can be replaced by other insulating materials, to withstand the earth pressure of 1-1.3m. Thermal insulation is placed on the back and a thin layer of polystyrene insulation foil.
chini ya kusababisha thermally kujitenga na LECA Styrofoam (polystyrene foil na kulinda dhidi ya kuchomwa na LECA . LECA inaweza kubadilishwa na vifaa vingine kuhami, kuhimili shinikizo dunia ya 1 – 1 . 3m . Insulation mafuta ni kuwekwa juu ya nyuma na safu nyembamba ya polystyrene foil insulation .