DPC For Patio Doors Lintel In Solid Brick Wall?

[TomaszP]

Hi,

A bit of urgent advice required!

I am in the process of removing a window and putting in patio doors (i have had to widen the opening. I have an rsj lintel for the outside and a heavy duty catnic lintel for the inside (just because these were available to me for free).

It is a solid Victorian brick wall. Do i need some sort of DPC above one or both of the lintels? The only diagrams i see are for cavity walls. The eaves of the house overhangs by about 400mm so the wall does not get too wet and i am about the have this wall re-rendered.

If i do need one - how do i fit it? I have already installed the internal catic lintel but can take it back out if necessary.

 

[TomaszP]

Is this only required on cavity walls because in that case you would be bridging the external to internal wall?

Maybe i just need some strip along the top and bottom of the rsj to protect the rsj itself from moisture??