I am considering using 40 mm EPS or polystyrene attached to the outside of my brick veneer (ground level) and weatherboard (upper level) to improve the insulation (by about R1.8 ) and the facade of my house. At present it is face brick veneer. The weatherboard is in need of paint so I will need to render and paint anyway and the brick veneer is dated.
I have not found much information on retrofitting EPS/Polystyrene on the external walls on the net, and the few I found are overseas based systems. I therefore have a few questions and would appreciate any experience/guidance from the Homeone members.
Has anyone had any experience in retrofitting EPS/Polystyrene over existing brick and weatherboard walls?
Would I need sarking between the EPS and walls to assist with condensation and improve the insulation, as home is in Melbourne?
Do you know of a suitable EPS fastening system for brick in Australia? I have only found ones for Wood and Steel.