We have the builders back in at the moment and the builder's plumber has been doing first fix..... I am noticing things that don't seem 100% to me and am wondering if I am just being anal or if I need to start making a fuss.
For example:- running pipes in the floor to ceiling void meant going through the 170mm joists... these have been drilled through close to the wall and bunched together, so for example 6 (22mm) pipes go through the joist about 30mm each apart in their own hole. Aren't there rules on where you can drill joists and how close together you can place holes? He has also drilled a 60mm hole through a joist for a waste and connected a boss onto the soil stack at floor level just above the foot bend (I thought you had a no connection zone of 450mm here?). None of his plastic CH pipes are clipped in the floor to ceiling void, they just lay loose through the holes in the joists etc.
The mains water supply, soft water and hot water loop are to run in the floor screed - this has all be done in a continuous run in Hep which looks fine, but all four pipes run right next to eachother. The hot pipes have 12 or 19mm (can't remember) Climaflex lagging on, the cold pipes have that hairy lagging on plastic stuff on - should there be a gap between all these? i.e. am I likely to get heat transfer from the hot to the cold water pipes, despite the lagging once it is all covered in screed?
Yesterday I notice they have laid out for a radiator and the pipes for that have been done in copper, there are quite a few joins and corners and they run perpendciular over the top (touching) the hot and cold water pipes and are only sleeved with that hairy plastic stuff - they are going to be covered in screed. I thought it best practice to minimise joints in copper pipes laid under floors and wrap in Denso tape, or is that hairy stuff Denso tape? Does that sound right? Would I be better to ask him to re-do that in one run of plastic and get the pipes away from the cold feeds?
For example:- running pipes in the floor to ceiling void meant going through the 170mm joists... these have been drilled through close to the wall and bunched together, so for example 6 (22mm) pipes go through the joist about 30mm each apart in their own hole. Aren't there rules on where you can drill joists and how close together you can place holes? He has also drilled a 60mm hole through a joist for a waste and connected a boss onto the soil stack at floor level just above the foot bend (I thought you had a no connection zone of 450mm here?). None of his plastic CH pipes are clipped in the floor to ceiling void, they just lay loose through the holes in the joists etc.
The mains water supply, soft water and hot water loop are to run in the floor screed - this has all be done in a continuous run in Hep which looks fine, but all four pipes run right next to eachother. The hot pipes have 12 or 19mm (can't remember) Climaflex lagging on, the cold pipes have that hairy lagging on plastic stuff on - should there be a gap between all these? i.e. am I likely to get heat transfer from the hot to the cold water pipes, despite the lagging once it is all covered in screed?
Yesterday I notice they have laid out for a radiator and the pipes for that have been done in copper, there are quite a few joins and corners and they run perpendciular over the top (touching) the hot and cold water pipes and are only sleeved with that hairy plastic stuff - they are going to be covered in screed. I thought it best practice to minimise joints in copper pipes laid under floors and wrap in Denso tape, or is that hairy stuff Denso tape? Does that sound right? Would I be better to ask him to re-do that in one run of plastic and get the pipes away from the cold feeds?