TS,
Think u need to provide more details as to your proposed idea. What do u hv in mind? Lets say u thinking abt getting a car, some will say jazz too small, some will say anything lesser than Q7 is not a car.
Hw big is yr proposed loft?
Existing Ceiling ht is very important. Cannot agar this. Need physically measure.
Some loft are bolted to building structure, some are steel hollow section resting on floor. Some are just supersized wardrobes.
Loft used as living space or for storage? Need aircon up there?
Is a hollow floor acceptable, or must hv solid concrete feeling?
Based on forum member replies, can tell there are many very competent industry professionals here, and almost every industry is represented here. Thats why i believe, its very possible to get serious comments here if enough info is provided. I have gotten many insightful ideas from here too.