This would save a lot of Cement! Impressive!

True! If you loose your key, you can just loose one side and enter house. Peasy!!

😂😲😞

No mortar between the joints. Not ideal

Plastering will make it stick.

Did you consider the quantity of cement deployed to mould the block to that standard? The cement that would have been used for chucking has already been used to achieve that block quality, hence, no cement is saved. You may even consume more cement.

It will still absorb the heat from the exterior... This methold of construction still the best ..

What method is this?

Your going to have to fill it with concrete or you have a house of cards

Yes, ooo, but when it gets to nigeria you will see blocks that will not be strong to interlock like this because of poor production

Was cement not used to build The blocks