Re: Hi all from Aussie
Because of the nature of perlite and vermiculite they suck water into their tiny pores,mbut if you mix it correctly there will not be much excess. Therefore there is little moisture absorbed by the blanket. If you put plastic between the dome and the vermicrete layer it will melt and burn creating very toxic fumes that are bad for the atmosphere. Some people (me included) have tried using al foil as a moisture barrier, either beneath or over the vermiculite layer, both as a reflective layer to retain more heat and as a slip layer. It does not melt and degrade but does a very good job of trapping moisture from escaping. Better to vermicrete straight onto the blanket IMO.
Because of the nature of perlite and vermiculite they suck water into their tiny pores,mbut if you mix it correctly there will not be much excess. Therefore there is little moisture absorbed by the blanket. If you put plastic between the dome and the vermicrete layer it will melt and burn creating very toxic fumes that are bad for the atmosphere. Some people (me included) have tried using al foil as a moisture barrier, either beneath or over the vermiculite layer, both as a reflective layer to retain more heat and as a slip layer. It does not melt and degrade but does a very good job of trapping moisture from escaping. Better to vermicrete straight onto the blanket IMO.
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