Was watching Grand Designs last night on C4. Couple were making a house out of AirCrete blocks. Seems like a good idea - recycled fly ash + air bubbles for insulation. Was wondering: How to these aircrete blocks stack up against standard concrete blocks as regards cost per and strength? Are they suitable for use where ever concrete blocks are or do they have limitations due to their reduced density/porosity?
I didn't find the right solution from the Internet.