ETC

The gutter is too low and falling towards the building. Raise the gutter to the underside of the flashing.

Vary the bed depth.

No. If the steelwork requires FR speak to British Gypsum or Harmon for the correct way to fire protect steelwork.

Have to agree. Organ grinder and monkey come to mind. No offense.

No.

Should have been two beams. You'll also need a stepped DPC/cavity tray above the beam.

Did not know that…….good to know about mould……

Nope. Does the same job. Just need to undercut the doors to allow for whole house BV.

Just look at the legislation-it will say what the inspections are.

Install a roof light where you need the head room. You’ll get an extra 100mm easily.

Look at what U-Value you are trying to achieve and then decide - I’m surprised that 75mm of PIR will comply - but I would be leaning towards pumping the cavity with insulation and if required dry-lining the inside with insulated plasterboard. As I said before (and got slagged-off for) you will be at the mercy of whoever is building your walls to get the PIR boards correctly installed.

Building Control need to see the DPM before you place insulation or concrete. There are a list of Statutory Inspections but assume that BC need to see most works before they are covered.

And what nobody has mentioned is that you really shouldn’t build joists into a party wall.

Just a thought…….why don’t you appoint a structural engineer to help you? Just saying.

PIV system. https://drimasterexpress.co.uk

1. You’ll need to separate the kitchen from the staircase as well as separating the void over the kitchen from the upstairs. 2. How are you going to clean all that high-level glass? 3. Hall is massive. 4. Some rooms too small/too long. 5. I could go on.

Where’s your gutter?

No - I’m suggesting you take up all cavity walls to the flat roof. The only wall that’s not a cavity will be the wall between the staircase and the bedroom which you can either build as a traditional timber stud wall (insulation between and inside with a vented and drained cavity or take the 215mm wall up and insulate the inside and clad the outside. Once you’ve the cavity walls built up clad the outside with vertical and horizontal battens to create the look you want.

Also why are you building a cold roof? For the corner use a Keystone post and lintel system - simple.

The easiest thing to do is to build the walls as cavity and then build out in timber to create the look you want. Keep the window recessed.

https://www.buildingcontrol-ni.com/assets/pdf/TechnicalBookletD2012.pdf

Really……

What about sound resistance between floors?

BCNI_CONSTRUCTION_DETAILS_-_November_2023.pdf

Why are the doors set that far forward?