Carlo Guerra

Thank you Glenn.
in the end I have thickened the clay slip with sand in the first  brick courses, so the the measurement came right. I am not sure of the consequences, though.
Thank you all for the support
Carlo

Thank you Cedric and Benjamin,
it is an outside wall, yes.
ok, I will try to block the heat transfer with what I have and I am going to tell you the result.
I have another question which is not ralated to insolation but to the dimensions of the burn channel. If it is not in the right thread please help me to find the right one.
Question:
If my bricks are enabling me to have a 19 cm wide and 60 cm long tunnel (200 cm system CSA of 330 cm square, why am I stuck to an internal height (I mean between the floor and the "bridge") of only 17 cm instead of  18 cm? What can I do to reach the 18 cm of the book ?
I thought of carving an arch in the four bricks to make up for the missing flow area but I might have made some mistake.
I have not put clay slip on the bricks but it seems odd that i would gain a cm thickness with it
Thank you
Carlo

Hi rocket enthusiasts,
I am prototyping my first jtube rmh in northwestern Italy. I bought Ianto Evans book a long time ago but also the Eisners's recently and I am using the latter as the bible.
I would like to receive advice on the insulation of a 3 feet high brick wall, against which I am building the heated bench
Would a 4 inches layer of clay stabilised perlite be a good choice ?
I have access to powdery perlite so I was thinking of mixing it with clay and stacking it along the wall as cob, like a dirt wall.
Would that sustain itself or should I rather pour a formwork or layering it as an "intonaco" ?
Thank you
Carlo