filling wall chase for heating system?

[A.J.T]

Hello
I have chased out my walls for the heating system , they are coming up from the floor and are In the wall for about 7 inches.

I have used hep2o and was planning on insulating them before plastering with either a tape or conduit to allow to expansion.

My question is how to fill the voids around the pipe ? I was thinking about using expanding foam then covering it with some plasterboard or can you plaster straight to the foam,?

 

[PrenticeBoyofDerry]

Plaster products will be fine, providing you allow for expansion or plaster may crack.

 

[rob_j20]

Run the pipes in conduit and secure to the brickwork, then plaster over the top. Its how i do my network cables allows you to remove if you ever need to, should work fine for pipes and allow expansion/movement.

 

[A.J.T]

The only issue is the holes are quite big so need filling somehow

 

[dilalio]

The only issue is the holes are quite big so need filling somehow

Does this mean that you have a pushfit elbow buried in the wall??
Or have you used a compression elbow? Either way, soldered copper would be the way to go!