Active job

New bathroom & water pressure

We have a concrete base, asbestos exterior wall and no roof (flat roof) house. Looking to get gas installed due to low pressure. Luckily most plumbing fittings (all but the bath) are on the external wall (so gasfitter has said we can run lines on the exterior of the house. To get to the bath, I'm assuming a line needs to be run inside an interior wall (if that's even possible). Also our low pressure shower would need to be replaced. Our bathroom is an L-shape & we'd happily keep things where they are, we'd just upgrade the shower & probably pull off the plastic panelling on the wall & replace with tiles going 1/3 to 1/2 way up the wall. Maybe look at a new bath or basin. Would just love an expert to come and discuss options.