We're about to re-do our bathroom and in this world of push-fittings and flexible connector hoses I'm planning to do it myself. My plumbing experience consists of fitting two radiators in the lounge where previously there were none, and fitting TRVs to all the rads in the house. So not extensive then 
The install will be a straight swap out of bath, basin and toilet. Shower over the bath via a combined bath/shower mixer. Water supply is conventional boiler gravity system with hot tank in cupboard next to the bathroom, cold tank in loft.
I have the following questions if anyone can help please:
1. The mixer taps we've chosen are high pressure items. I intend to put a shower pump in the airing cupboard on floor next to the cylinder. All the install guides I've seen have the pump serving just a shower. I assume it's okay to have the pump serve both the basin and the bath/shower mixer in parallel, yes? Edit: The Stuart Turner installation manual shows this is okay.
2. The bath is approx 2m from the pump horizontally. I'm going to contact the tap maker for their recommendations on water supply pressure, but can anyone offer their own view on required bar rating for a pump serving a basin and bath/shower?
3. I'm very concerned about the noise potential of the shower pump. I'll do what I can to isolate it from the floor and will probably fit acoustic matting (like the car hi-fi boys use) to the airing cupboard walls, but it will be right next to a bedroom with only a stud wall between. What are the quietest makes of shower pump for me to consider? Just how noisey are these things?
4. Currently the bath and basin waste pipes run across the floor in a box. I'd like to get them properly concealed. Would it be possible/normal to run the waste through the stud wall cavity? I'm guessing there's only an 80 or 90mm void in the wall at best which doesn't seem like much space to run the pipe and maintain the wall stud strength. Anyone have any experience of this?
5. Alternatively, would it be better to run the wastes under the floor? It would mean drilling the timber floor joists which are perpendicular to the required run. The waste does disappear into the floor eventually anyway, but I suspect it then runs parallel to the joists rather than across them. I've found guidance on the maximum penetration sizes for timber joists and I think a waste pipe would put me right on the limit. Not too keen on this idea...
6. What Building Regs requirements do I need to be aware of? Is it normal/necessary to involve BC in a project of this type? I'll be getting a fully qualified electrician mate to do the zappy bits, if that helps.
Many thanks for any help with these. Any advice much appreciated.[/b]
The install will be a straight swap out of bath, basin and toilet. Shower over the bath via a combined bath/shower mixer. Water supply is conventional boiler gravity system with hot tank in cupboard next to the bathroom, cold tank in loft.
I have the following questions if anyone can help please:
1. The mixer taps we've chosen are high pressure items. I intend to put a shower pump in the airing cupboard on floor next to the cylinder. All the install guides I've seen have the pump serving just a shower. I assume it's okay to have the pump serve both the basin and the bath/shower mixer in parallel, yes? Edit: The Stuart Turner installation manual shows this is okay.
2. The bath is approx 2m from the pump horizontally. I'm going to contact the tap maker for their recommendations on water supply pressure, but can anyone offer their own view on required bar rating for a pump serving a basin and bath/shower?
3. I'm very concerned about the noise potential of the shower pump. I'll do what I can to isolate it from the floor and will probably fit acoustic matting (like the car hi-fi boys use) to the airing cupboard walls, but it will be right next to a bedroom with only a stud wall between. What are the quietest makes of shower pump for me to consider? Just how noisey are these things?
4. Currently the bath and basin waste pipes run across the floor in a box. I'd like to get them properly concealed. Would it be possible/normal to run the waste through the stud wall cavity? I'm guessing there's only an 80 or 90mm void in the wall at best which doesn't seem like much space to run the pipe and maintain the wall stud strength. Anyone have any experience of this?
5. Alternatively, would it be better to run the wastes under the floor? It would mean drilling the timber floor joists which are perpendicular to the required run. The waste does disappear into the floor eventually anyway, but I suspect it then runs parallel to the joists rather than across them. I've found guidance on the maximum penetration sizes for timber joists and I think a waste pipe would put me right on the limit. Not too keen on this idea...
6. What Building Regs requirements do I need to be aware of? Is it normal/necessary to involve BC in a project of this type? I'll be getting a fully qualified electrician mate to do the zappy bits, if that helps.
Many thanks for any help with these. Any advice much appreciated.[/b]
