Hi, I moved into my house 10 months ago and ever since has been one nightmare after another. Thats my introduction over. Ive had a guy board my loft out in a fashion. He used wood called CLS and ran this kind of over the top of the wooden joists then added chipboard. its hard to explain but these CLS sit on something at each end thats part of the original wooden structure and because they are not thick enough they flex and then in turn the chip board flexes. The insulation wasn't super thick as it was and it didn't run tight in-between the joists. The CLS probably adds 4" as a rough guess, so just takes the insulation without compressing it...maybe? I looked up the new regulation of 270mm and we are not close to that. So with all the above, i went out and bought loft legs and i was gong to get the same guy to redo. His response was that you cant walk on loft legs and they are only for storing thing on. What do you guys think of the above? I apologise if it doesn't make much sense.