The arms of the inverted V are offset from the center. They are not on the same axis. One arm supports the far side, the other arm supports the near side. I loaded 250 kg (~500 lbs) on the center and nothing cracked.
I will plaster the outside and inside with facade putty, maybe go over it with a foam roller to give it texture, and paint it with facade paint.
I started building a garage to learn how to work with these blocks. Then I'll build a house, and maybe I'll chamfer each block and just paint it with...
This is cellular concrete. The density in a dry state is 600-800 kg / cubic meter. i.e. it does not sink in water. Thermal conductivity is like that of a wooden beam. It is made in large forms, then sawn into the required dimensions. It is made from sand and cement. Make a very liquid solution...
Perhaps you mean spray insulation or expanding foam. I do not use them. This is a special foam adhesive for cellular blocks, this adhesive does not have secondary expansion, it is for thin-joint block laying. I took a macro photo, the seam thickness is tenths of a millimeter. It is impossible to...