I would never use it where it can be seen as it doesn't look pretty and doesn't look overly professional either.
Using it under floors though I don't have an issue with. I do a lot of new build work and its all plastic out of site and copper where it comes through the walls. Except the 10mm plastic to the rads on some jobs.
A lot of people don't want to use it as it seems to devalue the trade, a lets face it, anyone can push a pipe in a fitting. The only thing I would say is, you need to pressure test it as per the manufacturer's instructions. Not easily done when working on existing systems.
Given a choice I would always use copper, I prefer it and I actually enjoy doing copper pipework with soldered joints and pulled bends. Boiler and cylinder cupboards are my favourite part of the job. The reality is plastic saves time and money and can get you out of tricky situations where you cant lift the floor etc.
Using it under floors though I don't have an issue with. I do a lot of new build work and its all plastic out of site and copper where it comes through the walls. Except the 10mm plastic to the rads on some jobs.
A lot of people don't want to use it as it seems to devalue the trade, a lets face it, anyone can push a pipe in a fitting. The only thing I would say is, you need to pressure test it as per the manufacturer's instructions. Not easily done when working on existing systems.
Given a choice I would always use copper, I prefer it and I actually enjoy doing copper pipework with soldered joints and pulled bends. Boiler and cylinder cupboards are my favourite part of the job. The reality is plastic saves time and money and can get you out of tricky situations where you cant lift the floor etc.