Crack in corner of old extension and crack outside

[DaveHhh1]

Hi,

My property has an old extension circa 1985. It's a detached property 1930s and we have a diagonal crack inside with is a couple of mm thick but deep so it is in the brickwork. Outside there is a diagonal crack also in a different location.

I've had a few builders and people say they aren't concerned and to monitor it but I am concerned. I plan to extend this extension to the side also in a year or two and people are saying "address the issue then if it's an issue." I don't have any cracks like this anywhere else in property.

I think I need to get a structural engineer in. Worrying times. What do we think?

Thanks all

 

[Dereekoo]

Nothing to sort except rake out and make good both faces

 

[opps]

Not my area of expertise, but if it were subsidence, I would expect the cracks to be at the top, rather than the bottom.

 

[Ivor Windybottom]

If that's your biggest worry then you have a good life!

Seriously it's a bit of hairline nothingness. I've seen houses where the entire corner of the building has dropped an inch into the ground.

If it really worries you then screw one of these across it on the outside...

Crack Monitoring Gauge Stopping Point Gauge Size Chart Geotechnical Engineering | eBay

1 Crack Monitoring Record. We'd like to settle any problem in a friendly manner. It's just take you 1 minute. Size Chart Because the unpaid dispute will not be closed automatically, and we may ignore it.

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I put one on a much bigger crack in my place about 5 years ago, it's not moved a bit so I've stopped worrying about it.