Joists runing parrel to external walls making it hard to get radiator pipes

[Mgrant]

If I use plastic because its looking like I'll need to notch the joists I will have to offset the pipes down ever time I need to tee off the heating pipework,

 

[kay-jay]

Sorry mate I'm struggling!!

So is the op.....

I said exactly the same in the previous post.

 

[AWheating]

What joists are they? Are you in the notch or drill zone area.