Does it have to be a special type of bar? Stainless or can it be rebar? - can this be done for block walls as well? Good video by the way / informative buddy
Are these 6mm helibars? I've just bought some to do a similar thing but they seem quite flimsy and easy to bend. Maybe that's how they're supposed to be?
They will stop the wall pulling away from itself to left and right (common problem) but not subsiding or bowing out. If you try to stretch them like a rubber band they wont move at all (ie the wall won't pull itself apart with lateral movement) but they won't stop eg subsidence.
settling of the foundation, often the bay window has it's own foundation so not as scary as other parts of the exterior wall, also the lintels failing over time can cause cracking but this stepped cracking looks more like foundation settling. If it happens later in the buildings life there is cause for concern, it could be that water is running under the property so look at drains, drain pipes, any water system to make sure it doesn't get worse
The window would have been wood with strong mullions etc The brickwork was laid straight on top of the strong widow frame When the plastic window men come along wrive and tug the frame out and place in a plastic frame and screw it together in the meantime the brickwork droppes and cracks Personally I would have done the lot to help disguise the bodged up job the first thing any surveyor would notice is this work that's it Millions of houses in England were built using the solid strong timber frames as a load bearing unit they never envisaged any further problems years ahead.
