If you want a good wood-fired oven – you have to insulate it, and insulate it well!
A well insulated oven can reach temperatures of 500-700 degrees C on the inside. Let’s just say, you can’t achieve or maintain that kind of heat if you don’t.
You can use your oven pre-insulation for cooking, but the temperature won’t last for very long, and the outside of the oven will get very hot.
Step 1: Cover oven in insulation
- Cover the oven with the insulation blanket
- Place black poly plastic over the insulation blanket (we held it in place with sticky tape!)
- Cover the plastic with chicken wire
Step 2: Insulation cement the oven
A final layer of insulation involves a mix of vermiculite and perlite mixed with cement. Vermiculite and perlite are inert materials that are very light. They enable the cement to be very aerated, hence a poor conductor of heat (and a good insulator).
- Place concrete arch and cap on the back of the oven and secure to the chicken wire
- Mix the vermiculite/perlite into the cement mix
- Place cement mix over the chicken wire to secure
- Allow cement mix to dry
4 Comments Add yours
Nice photos. I was looking for dry loose-fill insulation packaging sizes, If used large 100L bags and needed to know equal product in US size in cu-ft. I use vermiculite for insulating wood fired brick ovens. Here page on thermal vermiculite insulation. Thanks for rising awareness, all the best.