minus-squareCobrachicken@lemmy.worldtoCanada@lemmy.ca•Hundreds of buildings with Ontario Science Centre roof panels remain openlinkfedilinkarrow-up4·8 days ago" The material is not the root cause, rather inadequate roof maintenance, which permits water infiltration, and decisions by building owners as to repair or the replacement of existing roofs, which is a part of cost-benefit analysis." quote from: https://en.wikipedia.org/wiki/Autoclaved_aerated_concrete#Reinforced_autoclaved_aerated_concrete linkfedilink
" The material is not the root cause, rather inadequate roof maintenance, which permits water infiltration, and decisions by building owners as to repair or the replacement of existing roofs, which is a part of cost-benefit analysis."
quote from:
https://en.wikipedia.org/wiki/Autoclaved_aerated_concrete#Reinforced_autoclaved_aerated_concrete