Wall needs tying into original wall

Without ties or bonding, the infill can behave like a separate panel rather than part of the wall

Yes, that makes sense. If the new brickwork was simply butted against the original wall without proper wall ties or toothed bonding, movement and cracking can occur. The proper repair is usually to tie the new section into the existing wall with stainless steel wall starters/ties or rebuild the area correctly. It’s best to get a builder or structural professional to inspect it before the movement worsens.

Because the new brickwork isn’t tied or reinforced, there is now movement showing on the internal wall. Although the affected area is not large, the brickwork needs to be properly taken out and rebuilt so it is correctly tied into the existing structure and made stable.

The new brickwork needs properly tied into the original wall using stainless steel wall starter ties or toothed bonding, simply doing it up will always cause movement and cracking. The affected area should be taken down and built correctly, then made good.

Makes sense. The new brickwork wasn’t tied into the existing wall, causing movement. To fix, the bricks need to be properly tied in with wall ties to ensure stability.

Yes, that makes sense! What you’re describing is a common issue when brickwork isn’t properly tied into the existing wall structure. Simply butting new bricks against the old wall without interlocking or “tying” them together weakens the bond and can cause movement or instability.

Here’s what typically should be done:

When rebuilding or adding brickwork, the new bricks need to be tied into the existing wall using wall ties or metal reinforcements.
This involves overlapping bricks (called “toothing” or “staggering”) so the new section becomes part of the overall structure, not just resting against it.
Proper mortar bonding between old and new bricks is crucial to avoid movement.
Without this, the new brick section can move independently, causing cracks or instability inside.
The fix usually means carefully removing the loose brickwork, rebuilding the section with proper brick ties and mortar, and ensuring the new bricks interlock with the existing wall.

If it’s a small area, a good builder should be able to patch it up relatively quickly to restore stability.

They should of tied the brick in the first place and cut the half bricks out and staggered the new ones in plus’s I’d of drilled ties on interior wall to

I would take it down and relay it with ties or try and bore holes and put ties in accordingly but first idea is likely the best you could also render and plaster to hold it in place but ideally takes it down and if it's interior block it up with block work and render and plaster or just plaster if possible

It needs ties I brickwork otherwise its not safe

I would take some bricks out ,drill some holes in existing wall and put some ties in then replace bricks

should apply wall starter kits with ties to the existing wall before building the bricks

The correct way to tie brickwork in is to chase out every other course of the existing brickwork to a minimum of 100mm and to tie in the new brickwork.The alternative that still complies with building regulations is to install a stainless steel wall starter to the existing brickwork and use the wall ties supplied.

The half brick (headers), should of neatly been removed. This should leave a 100mm gap in the bond (minimum of 60mm), for new wall to tie into. Failing this, a wall starter bolted in to existing wall, with adjustable ties to be bedded into new wall. Without either of these, you have a week point. Over time with movement, vibration or weight it maybe supporting. Will weaken the area more, this can be very dangerous.

I would remove loose brick and either tie in with bond or put starter kit strap on wall and tie new brick in

You will need to drill and use a threaded wall tie and proxy resin and then make good

Take out bricks on each two rows to tie in to original wall or use a wall starter