removing one leaf of a thermal block cavity wall

[Ron6a]

I want to put a pocket door into an existing internal, thermal block cavity wall, with an existing doorway. I'm thinking that if I remove just one side of the block work next to the door, I can fit the frame and replace a stud wall in it's place. Would I need a lintel or would the other side of the cavity wall be enough?

Any thoughts would be welcome, as there seems to be no information about this on line.

Thanks
Ron

 

[endecotp]

it's unusual for an internal wall to have a cavity; are you sure of the construction?
what is upstairs?

 

[Ron6a]

Yes. I have the plans showing this. The wall is 300mm thick. The house is a Chalet bungalow with 2 bedrooms upstairs. The door goes into a utility room, that although all built at the same time, is a single floor, like an extension, so the wall was designed as an outside wall but I think both leaves are thermal blocks.

 

[^woody^]

You will need a lintel longer than the width of the opening on one leaf, unless you are going to prop the leaf to install the gear in the cavity and then rebuild - but some systems may not fit in a narrow cavity.