Browse Forums General Discussion 1 Dec 10, 2018 4:06 pm Considering adding an extension to my 1986 home, we are in a bushfire overlay area if i build an exetension does the extension need to meet current bal levels does the rest of the house need to be brought up to current bal levels i have heard if extension is more than 50% bigger than current home, then entire home needs to conform to current bal levels but i cannot find this documented anywhere Hi Simeon, Thanks for your reply. Yes, that makes sense. I contacted the manufacturer; they will issue a certificate with BAL rating mentioned on it. 2 1846 I would say both styles you have pictured are steel. The lower chord of the first pic would be a massive lump if made using timber considering the size of the rafters. If… 1 3958 |