Hi - thanks for your response.
My LC is in a 1999 built bungalow, span is 8.5m - so 4m+ to spine wall, the od place has no supporting wall due to hallway etc.
The only reason i went for telebeam is because i couldnt find any timber floor joist systems/solutions which would span the...
i'm currently undergoing telebeam LC, for my install the price was very comparible and is relativly a competant DIY's job - i'm just getting trades in for fitting velux, stairs and doing final fix for plumbing and bathroom.
Lookily i have a central spine wall running the extent of teh building...