I'm in the process of building of new home (30sq, concrete tile roof, brick veneer, Western Sydney so gets hot and cold). What's the general concensus on :
1. Sarking - not provided as standard by builder. Need to pay extra.
2. R2.5 batts standard. $600 to upgrade to R3.5.
3. Extra to cover double garage with batts.
Any opinions on whether it's noticable to upgrade batts, cover garage and include sarking?
My gut feeling is that is will, but that's just it - only a gut feeling. I currently have cellulous fibre in my old house but not the garage, and the roof cavity gets really hot in summer - don't know if the fibre is ordinary or it's the fact that the garage isn't covered. It does a reasonable job, but only if you remember to "shut the house down" before you leave for the day - otherwise it's freezing or cooking when you get back.