Chris McClellan wrote:Great natural builder Massey Burke has also done this with a polished lime plaster called tadelakt which is beautiful and a huge amount of work.
Chris McClellan wrote:Cob expert Miguel Elliott (way above my Uncle Mud pay grade) responded to this exact question when I asked:
"Ceramicrete [but it is] hard to find though. Try Grancrete. Have to special order it. Hydraulic lime plaster first, then trowel on the grancrete. That should work. It has worked for him several times.
Gerry Parent wrote:Hi Travis, I can't see a lot of your pictures. The first 3 show up but then all of them but the last one don't show up. Would love to see your work!
EDIT - After I posted this your pictures magically appeared! Boy you work fast.... Thanks!
thomas rubino wrote:Hi Travis;
I don't have a cob oven yet, but I have played with water glass (sodium silicate) on my rocket mass heater.
Years ago I had an all cast, fire clay perlite core. The feed tube was constantly wearing and needing repair.
Brushing the water glass on fired cob worked just fine as far as application goes. It would apply in your oven as well.
My opinion of it for a RMH is low as it only hardens the face and easily breaks a thicker piece if banged.
So I would say Yes, you can apply it in a used oven.
My question is , What are you hoping for?
Is your roof cracking / failing?