Bhanta

Both many, many thanks for your pieces of advice- very helpful (I also calculate 8ooo Baht/m2 and HomePro is a good tipp).

I wrote not exactly enough. What I'm interested in, is who have experiences in building an indoor wood/coal oven for heat the rooms. In a Thai-speaking forum I found an article but talking within another context. But I can see an oven in the left pic's corner. My plan is to build the house/rooms around the oven, so 3 rooms (living, sleeping, bath) are warm in the month Nov-March. The outside and inside walls will build of Q-con.

Good evening, my name is Frank – a German . I hope, I'm not wrong in this part of Issan-Forum...

I want to build a fireplace in my new house (Phu Ruea) in the middle of the house (1 side and backside for bathroom and sleeping room). Does anyone have experience or even a construction plan? I am very, very grateful for any suggestion. Thank you very much, ขอบคุณมาก . Frank