The picture above is a picture I got from a booklet that I recieved from a proffesional out in the field the booklet i recieved was very usefull so I decided to photocopy this page as it shows you the advantages of hebel.
Disadvantages: The panels of Hebel are very heavy they weigh 75 kilos per section of hebel this means not anyone can install them you need two strong trained men to carry them and lift them inplace. Also in some cases the full panel of Hebel wont fit in the space you need due to windows or beams in place so you will need to cut the panel down to size you do this with a circular saw and a special diamond tip blade you can buy from any hardware store but in the cutting process you make alot of mess because the Hebel pannels are autoclaved concrete therefore the panels are very messy to cut. Lower direct load capacity - i.e. cannot be really used to support structural loads, so some other building element needs to carry the load for them (i.e. a steel frame or suspended flooring). Although this being said Hebel do produce the PowerBlock system that claims to be load bearing in a certain configuration. Low impact resistance - basically they break easily, so need to be 'wrapped' by structure that provides impact resistance.Needs specialized glues and associated construction techniques. Low intrinsic thermal mass - i.e. you cannot use AAC as part of a trombe wall(A wall that baires a load in the middle of your house) or as part of the aggregate whole house thermal mass(or as part as the walls that sepperate rooms in houses).
