Position of bifold doors in thickness of solid wall.

[JCB400]

Hello,

Can anyone help with the positioning of bifold doors within the thickness of a solid wall aperture please? (i.e. towards the room side, middle or exterior side of the aperture).

I can see there are various considerations, although I can't find much advice online for solid walls. I'd like to maximise the internal space in the room if possible, whilst maintaining good thermal properties, rain resistance etc.

I've attached a screen grab of my architect's proposal (plan / overhead view). He has the exterior glass of the bifolds inset 225mm from the exterior face of the brick, thus the overall bifolds unit is closer to the room side of the aperture. Note the blue steel column / I-beam immediately adjacent to the frame. I'd like to move the bifolds a little towards the exterior side if possible to maximise the internal room space - I'd appreciate any thoughts anybody might have on the various implications of that please, thermal or otherwise. Thanks.

[tonyshouse]

I would push the doors out to 15mm back from the outside face of the brickwork, bring the steel inside your insulation barrier ie wrap insulation round the outside of it all