Porch roof attached to timber frame

[GrantMcscott]

To get us wind and water tight the porch was temporary added to the house.  As there was no outer block work at the time the joist hangers were hung to  timber attached to the timber frame.  Essentially in the 50mm cavity.

 

Is there any issue in doing this or should I lower the lintel and attach the roof to the external leaf?

 

thanks