What is this top part of a door frame called? (Photo)

[Irissa]

As in the title really!

what is the horizontal bit of wood called and where can I buy one from please?

do I just use nails to hammer it on?

Is it a lintel?

Door lining. Jewson definitely. Probably B&Q.

Architrave

The facing, the lintel is hidden behind the plasterboard

Architrave

Lintel. The entire surround is rhe architrave. DIY store or architectural salvage yard! HTH

The wooden bit across the top? Architrave to me.

Yes just the wooden bit on top, I need one!

thanks for all your suggestions!

The top part of the frame is the header.
The surrounding parts are architrave.
So presumably you want head or top achitrave?

Is this your actual door?
Only it looks as if the architrave is a moulded (?) unit, rather than having the top piece cut from a length and mitred to fit the side pieces.

I wish @GiantKitten! No, this is my door!

I have found the piece I need at Wickes/B&Q, thank you all!

So you might need to replace the whole thing.
(If it is mitred to fit you should probably get a joiner in to do it)

It is a very old/wonky house (as you can see), there is no space on the right hand side of the door for any fancy moulding, so I am just going to smooth/fill what you can see and paint it white. On the left hand side there is a bit more space but not much really. Again I will just give it a new coat of white paint.

Then I will put a horizontal section of architrave on the top, and use it to disguise the slight slant of the door frame. That’s the plan, anyway!