Routing Plumbing along stair stringer

[MortarThePoint]

Happy New Year everyone! We're having a staircase with a half landing under which the UFH manifold is going for GF. The only realistic route* to this manifold is to run pipes within the staircase. We are having a staircase with straight stringers either side and a panel underneath, so you can't see the backs of the treads and risers. This will leave a space which I intend to use for routing the UFH flow and return feeds, as well as some mains and Ethernet etc. Good plan?

 

Things I need to understand:

1. I've no concerns about the wires, but how will the pipes handle the vibrations of people going up and down the stairs. I remember jumping around on the stairs as a kid so it can be quite a bang. I am tossing up between Hep2O and copper for these feeds.
2. Heat affecting the timber of the staircase. I guess I could insulate the UFH feed pipes well enough to reduce this concern(?). I could also add a 120mm computer fan to blow air through the space if that could help.

* For completeness, I guess an alternative is to create a false wall under the stair that the pipes are routed in along the surface of the blockwork wall which is already there. That is more work/cost and takes up space.

[PeterW]

Run in Hep2O and insulate - nothing wrong with that. 
 

Just make sure it’s more than 50mm from the treads / risers so when the carpet fitter etc slam a few screws in you don’t get a shower .. 

[MortarThePoint]

1 hour ago, PeterW said:

Run in Hep2O and insulate - nothing wrong with that. 
 

Just make sure it’s more than 50mm from the treads / risers so when the carpet fitter etc slam a few screws in you don’t get a shower .. 

 

Would you just use standard pipe clips or would you try to isolate the vibrations somehow. One though that comes to mind is to use a pipe clip that is big enough to go round the insulation and add some compliance that way.

[PeterW]

It’s not going to be continual vibration and tbh you are more likely to get movement from thermal expansion than the stairs being used. Standard Talon clips with spacers will be fine.