A friend of mine is building as new room separate from his house. He lives 2 hours away from me so was planning to use a local plumber. The guy who was going to do the job has now said he can't, another guy gave a ridiculous quote. So he has asked me to go down for a couple of days to help out. It is no problem for me to do but I have not had any experience with new builds so not sure how to plan it. The ensuite is below, floor level will be where the bottom batten is, there is about 200mm of insulation going in. At the far end will be shower on left, cupboard on right for unvented cylinder. On right will be wash basin then toilet and at this end a free standing bath. I plan to run hot and cold along the floor rising up to where they need be, they will be insulated in pipe insulation. There will be Shower, bath and basin waste, can run these along the floor and boss them into the 4 inch waste for the toilet? The other option is to go through the far wall and into a gully, the only problem there is the bath waste will be more than 3m. All the waste pipes will be supported to give sufficient fall and all pipes clipped. Floor insulation will then be fitted around them. I would also like to take the rising main into that cupboard, it would have been better positioned coming up there. So can I cut that down below finished floor level and put a 90deg bend so I can bring it up in the cupboard in the far right hand corner? Any comments and suggestions would be appreciated, thanks.