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If it was a true "outer stud wall" then of course its no use being outside the protective envelope of the structure. Without knowing what sits at the top of this stud it could be load bearing or simply a "counter batten" to create a void behind the cladding. There shouldn't be any moisture in...

What is the ground floor slab make up? Beam & Block or Ground bearing? If there is know risk of high water tables / or raised external works, its best practice for the timber frame sole-plate should be raised and sat on a single, or in some cases a double course or block. I'd guess you have a...

60s, I'd strongly assume asbestos until proven otherwise.

Leofric is spot on with the make up and the sequencing. Typical floor insulation in modern construction is typically 75mm. Kingspan can advise further. Have you considered a suspended timber floor...?

I'd say there's something fundamentally wrong here. The DPC is clearly installed in the bed joint over the top of the air brick as the "peep" vent is evident to the left hand side of the air brick. The vent brick is therefore below the DPC and one would hope the cavity tray. There should be no...

Have you checked the up-stand detail on the roof light, I assume that's what's showing in the last photo> ?

How old is the house?

Prop the lintel, remove the face brickwork to the left hand side of the opening, construct outer face of brickwork toothed into the existing, reduce your cavity on this elevation to a full fill 50mm and then your inner leaf will line up and you've removed any risk of cold bridging.

Ree - The sketch was to give the OP an idea of what a parapet wall and a coping stone was as he had no idea. Not for any other purpose.

Assumed coping stones

Do you have any signs of water ingress?

Hi Was the parapet up-stand treated when you had the roofing works carried out. If so was is dressed into the underside of the coping stone. What condition are the joint is? Are there any gaps between the underside of the coping stone and the bed joint? Out of interest what covering was used on...

There are many previous threads debating if a BCO can or can't offer structural advice. I personally have never met one that would put his preverbal on the block and is only ever there to ensure the works are compliant with designs / ACOP's. Whereas others have advised otherwise. Perhaps its a...

So are you suggesting a Structural Engineer is not required here and if so what advise would you have offered the Original Poster.

Use a steel plate say 150mm wide, bed on the brick course below and oversell the detail you have shown. The flat plate will support the 50mm overhang on the corners. Or as noseall said, 215mm wide band as below

As you are removing the door and block/bricking up the lower level anyway, why not secure the internal opening and remove the doorset complete. We can then have a good look at the construction detail and advise further.

It would be best to carryout the works systematically, i.e. excavated and cast the foundations in bays leaving reinforcement through the formwork to allow the next base to be tied in. You really don't want to excavate the whole area and then cast foundations. Also note curing period prior to...

Now that really would be an over designed foundation.

230mm wide wall constructed from two single leaves of brickwork. Insert brick lights back feed power supplies from the cavity. Close cavity on top with a pan tile and on edge header course. Foundation 450 wide as above but not sure that the foundation depths need to be to deep with a 600mm high...

Hi AronSearl - Thanks for another nondescript response. You say above "The metal frame will be a cold bridge" Perhaps to show your experience here you could explain this comment, bearing in mind the metal stud is situated behind the insulation in my previous post. Your own words please no...