Moving a front door

[Aero11033]

Hi,

I'm considering moving my front door out by a few feet, but not entirely sure how to do this.

My neighbors door is like this:

The lintel is already in-place so shouldn't need to have to consider this.

A new door will be purchased to fit the different dimensions.

So, my thoughts are to lay 2 rows of bricks to build the entrance up slightly and then fit a new door on top of this. I'm not sure what I need to consider in terms of thermal bridging, or putting DPC down on the current entrance floor area.

The wall on the right is a cavity wall that extends a reasonable distance inside the house before going to a single brick.

Would I need to insulate the current concrete floor?
DPC also?
Building control?

Could I just plaster the wall right up to the door (as currently is)?

Thanks in advance

 

[Notch7]

The difficult bit is ensuring you detail the damp and thermal bridging issues.

The walls that are external, will become internal once the otherside of the new door frame.

You either need to cut a vertical slot and put in veryical dpc, or cut a 50mm slot and insulate with a cavity closure.

Im not sure if either options creates structural issues.

Or you could tank the walls and fit foil faced plasterboard on battens, with a vertical dpc between plasterboard edge and door frame -not considered best practice, but probably fine and maybe an easier diy option. Dont directly plaster the existing wall with bonding if you arent cutting a slot in brickwork, any damp ingress will show on plaster.

 

[Aero11033]

Ah, I see

I probably need to do a bit more research on the damp issue. I wouldn't be too keen on cutting into the walls, but i like the tanking idea.

Thank you for the advice.