Posted By Ray Gladstone on 24 Jan 2012 11:40 AM
I'm having an argument with a builder. Do you need to fur out the interior of the ICF wall before you can sheetrock it? From what I read, it seems like the answer should be no. He says it will be too wavy to put sheetrock right on it.
No.
I've had this discussion with a few builders in the past. I suggest you put $100 on the table or whatever's necessary -- it's easy money and in the end you don't actually have to take it from him.
Perhaps the easiest way to convince him is promise accuracy will exceed that of interior wood walls. Take a six foot level or longer and hold it horizontally across 2x4 or 2x6 walls and you'll see that it's quite easy to beat the plus/minus present there. This is because wood varies and twists a tiny bit and even when you have a very good slab you are still introducing minor variations from the slab to the flatness of your wall before you stand it up. If your slab is near perfect you'll find greater variance on the other side of the wall.
I have seen walls furred out for various reasons but sheetrock is not one of them. Regards.