Fire-ProofPetra AAC buildings and Heart Craft Homes are as fireproof as they come. The photo shows firemen standing on an AAC wall after a chemical fire which was so hot it melted steel! In fact they are so fireproof that after the underwriting labs tested AAC, they started to use it to line their testing kilns! The scientific reason it is so fire proof is it is composed of totally non-burning ingredients and is aerated, meaning there are millions of insulating air bubble which retard heat transfer.
A picture is worth a 1,000 words: only house to survive this Laguna, California fire in 1993 was an AAC house!
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