Fixing flagstone vertically (Ed.)

[Why Not Indeed]

How can I secure this flag? It's come loose and is currently just "resting" where it is:

The metal post will stop it from falling so it's not immediately dangerous, but I would like to secure it somehow. I think it's basically just rubble/topsoil behind.

 

[Tigercubrider]

Ideally it needs to be buried 25-30%

 

[JohnD]

You appear to be using it as a retaining wall. It will never be successful.

 

[Why Not Indeed]

Do flags tend to have rebar in? Today's plan is to drill/plug/screw some builder's band round the corner to keep them in place, and then put a fillet of cement at the bottom

 

[Drillbit]

Could you make a step around it so it can be more deeply embedded in concrete?

 

[JohnD]

It's a retaining wall, so you need a wall. Precast sections are available in an L shape but I think your job is too small to warrant them.

You could also use concrete fence posts or spurs to support the paving slabs if you want.

Anything short of a well-founded wall will eventually be pushed over or break.

 

[Odds]

Galvanised brackets?

 

[robinbanks]

If you're really careful you can look to gently drill a hole through the adjacent one on the corner, and into the side of the one that is falling over, then concrete screw them together (do in a few places) with a screw long enough to be 2/3rds into the flag that falls over

 

[JohnD]

Though drilling into thin concrete can initiate a crack

 

[Why Not Indeed]

I've only got about 200mm [opinions may vary] to play with at the base here as it's right up against a public footway [more space on the other one as it's my drive]. Something L-shaped and precast sounds appealing as it will fix two at once. The ground rises in either direction, this corner is the high point, so I am less concerned about the other flags.

 

[Tigercubrider]

You could dig out the corner below the path and place concrete blocks flat on their side? This would take the load off the slab so that it’s function is solely as a finishing piece

 

[cdbe]

I didn't realise it was "bodge" week. You need to replace them with 3x2's concreted in. If you fasten that to the next or any other nonsense that will go the same way and then your paving will start moving and you'll have that to deal with as well. It's a fairly simple Saturday afternoon job to do.