Hi,
I am really enthousiastic about building a rocket mass heater.
Waiting for arrival book of Erica and Ernie !
There is just one obstacle,
It can not get very heavy, because my house is in the attic.
Now I might have found a solution and mix the sand and clay with 'hydro-korrels' (-= in dutch)= baked clay-granules.
40 liter weigh around 16 kilograms (sand would weigh around 60 kg ! for the same amount of liters)
Would it be ok to make a mixture?
Other tips and tricks to make the RM-heater a bit less heavy are very welcome!
Thank you!!
Lenny
