Install boiler piping outside

[Wexbike]

Hi there what’s the recommendations( also the type of insulation) for laying pex boiler pipes outside underground. And how do account for expansion over the length of about 15 metres. Thank you.

 

[ShaunCorbs]

Really you need pre insulated ducted pipe inside of a pipe

 

[exedon2]

As Shaun has said pre insulated twin duct way to go.
We have used polypipe version a number of times pricey but much quicker than pipe + lagging + duct.

 

[Wexbike]

As Shaun has said pre insulated twin duct way to go.
We have used polypipe version a number of times pricey but much quicker than pipe + lagging + duct.

Thank you for your reply. Much appreciated.