speedfit joints

[Unregistered]

I am having building work done at the moment. The person doing the plumbing is using speedfit connections for water and heating below floorboards, and connecting from old copper with a type of plastic pipe that connects via the speedfits. Is this normal these days, or should he be using copper below floors?
He has also put a connection(compression) joint below a block and beam ground floor.
None of this seems right to me.

 

[macelectrical]

speed fit under boards OK but i don't like the sound of compression under block and beam
Martin

 

[ProffesorPlumb]

The compression joint should be free from obstruction and supported with pipe clips as per water regs.

Make sure the pipe work is insulated to prevent heat loss and protect it from draughts. This again is working in accordance with water regulations.