Do clipped pipes need felt?

[trf0412]

Where can I get felt (or something equally as appropriate) to wrap around the pipe before I glue & screw flooring down? I tried B&Q but they didn't seem to know what I was after, so maybe I asked for the wrong thing.

And once I've wrapped something around the pipes, do I need to clip them back down or can they just rest in the notches to expand at their heart's content?

 

[trf0412]

Incidentally, when taking up the old floorboards in another room a few months ago, I saw that when the heating was installed (presumably when the house was first built) the pipes were just sat in the notches on little carpet offcuts. Are there any good reasons for not doing this now?

 

[ShaunCorbs]

Same as using hair felt lagging and wrapping the pipe it in

This would work

Spiral Wrap x 50mm x 7.5m

It's to allow fir expansion and contraction so you don't get the tap tap or banging noises

 

[Ric2013]

You can get carpet underlay (the cheapest kind) made from scraps of recycled wool (melted into a sheet of plastic?) that would probably work. I have used it to lag before now.