Re: Oven opening size
Hi Frank - The 'vermicrete' insulation is just vermiculite and cement. A ratio of 8:1 by volume works ok.
The trick is to get the moisture level right and too much water is an issue. It will end up like wet rice bubbles and is not a 'fun' material to work with. I found that working from the bottom up, balling it up and applying it in one 'smear' and moving on worked for me. Messing with it after you place it caused grief in the form of crumbling away.
I had chicken wire over the blanket and it helps hold the vermicrete too. It is perfectly stable once it hardens but I found it an 'interesting' medium. I did, however, use it on subsequent builds.
By the way, it is best to mix it in a barrow with a hoe rather than a mixer. The vermiculite maintains its integrity that way and you can better judge the moisture level. Good luck with it.
Hi Frank - The 'vermicrete' insulation is just vermiculite and cement. A ratio of 8:1 by volume works ok.
The trick is to get the moisture level right and too much water is an issue. It will end up like wet rice bubbles and is not a 'fun' material to work with. I found that working from the bottom up, balling it up and applying it in one 'smear' and moving on worked for me. Messing with it after you place it caused grief in the form of crumbling away.
I had chicken wire over the blanket and it helps hold the vermicrete too. It is perfectly stable once it hardens but I found it an 'interesting' medium. I did, however, use it on subsequent builds.
By the way, it is best to mix it in a barrow with a hoe rather than a mixer. The vermiculite maintains its integrity that way and you can better judge the moisture level. Good luck with it.
Comment