Hi All,
I am planning to do a knock down rebuild in a BAL FZ site and in need of advice around the best way to meet standards for external walls.
The AS 3959-2018 indicate that for walls I basically have four options,
1. Non-comubstible material (Full masonry, Masonry veneer, concrete etc) with min. thickness of 90mm OR
2. System that conforms with AS 1530.8.2 when test from outside OR
3. System with an FRL 30/30/30 or 0/30/30 tested from outside OR
4. combination of any items above.
I am looking to build from ICF and this is expected to meet the standard requirements, however seeking advice around the ability to meet the standard with certain finishes for example,
•ICF + CFC glued, screwed
•ICF + batten and CFC system
•ICF + rendered
•ICF + veneer stone cladding
•ICF + Metal sheet
Need to understand if I use the above finishes would I not meet the requirement despite my underlying wall structure meeting the standard requirements.
I Would also be interested to understand how the 4th options can be interpreted, i.e. when the standards says combination of system. What can this look like?
Any help will be much appeciated.
Thanks
Loch