25 vs 32mm mdpe

[Jaygray]

I'm replacing my main water line which is currently a 22mm galvanised steel pipe..

I'm taking it from the meter outside and will be able to replacing the entire house, over time..

I've added an additional bathroom and will look to do a loft conversion (three bathrooms total).

Water pressure isn't great upstairs at the moment.

My question, should I replace it with a 32mm or 25?

Can you connect a 32mm onto the external mains etc.

Thanks for the help.

 

[Scally-Ho]

You can connect any size you like, but what is the size of the water main the supply company provide? It should be described on your supply bill.

 

[Jaygray]

As in my water bill?

 

[Madrab]

Size of pipe is relative to flow, not pressure. Given the requirements though I would certainly be looking to maximise flow. The size of the supply pipe you install would, as suggested, be dictated by the size of the communication pipe from the main to the toby.

Didn't know they actually had the size of the pipe quoted on the water bills down south, hey ho, every day is a school day.