[Misc] Fitting uPVC door, but is there a lintel?

[Nottseagull]

The partially detached garage of my house had been built with two courses of bricks laid directly over the wooden window frame, with a couple of rafters on top! I was wondering if they might have done the same with this entrance, which is supporting a lot more although I realise it's only the triangle above the frame which is at risk (you should be able to zoom in). I can't see how there could be room for a lintel, unless it was made of thin metal. The cavity is unfilled, so I thought that if I drilled upwards into it I might encounter metallic, concrete or even wooden resistance. However, I'm fearing one of you might say that the block and brick leaves could each have their own lintels, so is there any other way to ascertain its presence, please?

 

[Goldstone1976]

Put an acrow in as far to the left as you can, and another 7/8 of the way across to the right. Remove the remaining 1/8 of the door frame. Investigate further.

Says someone who would call a builder.

 

[Seagull on the Hill]

How old is the house?
Anything built pre-1960's almost certainly won't have a lintel in the outer leaf, as the general practice then was to build the brickwork directly on top of the frame.
The inner leaf will have a lintel, probably concrete.

 

[Nottseagull]

How old is the house?
Anything built pre-1960's almost certainly won't have a lintel in the outer leaf, as the general practice then was to build the brickwork directly on top of the frame.
The inner leaf will have a lintel, probably concrete.

Not sure of the exact year but there's a nice avocado toilet and basin downstairs

Even zoomed in I don't think my pic shows how the brickwork overhangs the door frame, so this one is taken from underneath, into the night sky i.e. that anaglypta is on the ceiling.

(Please ignore attachments below)

 

[Pevenseagull]

I've sent the picture to my Dad who has been a bricklayer for nearly 60 years (quite slow nowadays).

If he comes back with anything other than an impression of Potter pausing for thought I will let you know.

 

[Weststander]

Lintels were used for an age eg concrete or timber. Although in some building work from the 30’s to 50’s only brickwork was laid directly on the door or window frame. Causing obvious issues down the line.

You may have a Catnic type lintel that’s correctly hidden from view.