Loft conversion : Deteriorating corner support for flooring

[Mmark]

Looking over the progress on our loft conversion and noticed something that concerned me. the flooring corner has two stacks of wood either side, levelling the flooring. One side is well supported on bricks, see above photo:


The other left side (not visible in the above photo) seems less so, see side photo:


When they cut the brick, to make it flush with the wall, some loosened and came away from under the left of wood support, leaving only some mortar to support the right of the wood support. This bit of mortar, directly on the wood support, is moving and crumbles easily with slightest touch. This makes me think this isn't viable, as it is, in the long term.

Also does the brick work, that was cut with the angle grinder, need work too - to ensure it stays stable and strong, see photo:


I'm going to speak to the builder, but wanted to go in with some knowledge. So what sort of thing should the builder be recommending we do here, and which I can raise with him if he recommends we leave it as is?

 

[Mmark]

I managed to get two better photos. I think the gap could be filled by just knocking in some timber support.


Notice in the above photo, you can see the "west" facing supports. I do wonder if that means the problem "south" one is actually redundant? Although I would expect you would need support on both sides of the corner?

I have annotated any bricks that move, including the bottom cracked brick.

I spoke to the builder, he just wants to bond over what is there. Should I be pushing to replace all those annotated bricks? As well as filling the gaps that are there. Before bonding is added.

Wondering if we should clear out all that mortar, and fill with an epoxy mortar, like: https://www.rawlinspaints.com/home/...oleum-5190-epoxy-repair-mortar-deep-fill.html

 

[oldbutnotdead]

Very hard to tell what's going on without some wider views (to see the dodgy bits in context).
Presumably your house is fairly old so you've got lime mortar in there (certainly looks like it). Once you start lifting loose bricks off you can keep going down for at least 10 courses....but as long as the loads are vertical you can leave them alone. When is BCO next visit scheduled- he/she can make a more educated call. The wooden propping looks as if it has been done with some thought rather than just a bit of scrap chucked in so you may be OK

 

[Mmark]

Thanks. I discussed with builder. We agreed to 1) mortar the entire end of the exposed bricks, nothing will be removed as it might cause other problems. 2) knock in some vertical wood in the "gap" to support the horizontal support timber (don't know it's proper name). 3) remove and replace all the lose mortar under the "horizontal support timer".