Repairing a sandstone block at front of house.

[Always Learning]

Hi All

I am in the process of purchasing the above property, as you can see where the red outline is, this sandstone type block/brick effect has been chipped.

I am just after some advice on the best way to repair this.
If I was to nail a small horizontal and vertical piece of wood to make up the corner would cement stick to this sandstone if it has been keyed?

Or do I need to use a different method for repair?

I am a noob as they say - done plastering and made templates and stuff at college but I have not done outside stuff.

Any help or feedback would be appreciated.

Thanks in advance.

 

[PrenticeBoyofDerry]

The block in question is known as a quoin. Looks like a hefty bit of damage.
Out of interest are these quoins, a full block built into the wall or just a facia?
To repair, it may take two or three applications, but you can as mentioned build some form work around this piece, and build it up, I would personally not only form a key but as install some pins in the area to be repaired to help hold it.
You may have a problem matching it identically to the others, so it would be worth considering, cleaning the rest of them up and masonry paint them all.

 

[Always Learning]

Thanks very much for the reply.

At a guess I would say that they are facias, we have under 28 days to complete on the property, I will go and take another look tomorrow.

The brick extension at the front is built out from the sandstone house, I understand the method of pinning it makes a lot of sense and I guess that layering the applications will prevent sagging and cracking if I tried to fill the area in one go.

We will be looking at painting them all a different colour so that will help to match it in better when repaired.

Would I be better using a render mix with some lime or would you go with a similar mix as when building a wall I.E. 4 parts building sand to 1 part cement.

Thanks again for any help - quoin I had never heard that mentioned before I will google it and find some more about these.

Thanks

 

[joe-90]

It looks like there's a wire coming out where some numpty BT engineer has used an SDS drill from within and blown the surface off.

You could also chisel the whole lot off and cut a piece of sandstone to fit.

BTW. Nitromorse will get rid of that red paint.

 

[PrenticeBoyofDerry]

If they are facia only, I would consider Joe's option of removing and replacing with new.
They are lots of different ways and mixes that could repair the damage, do you know If the quoin is a GRC or even GRP product as these could be complicated repairs.

 

[Always Learning]

do you know If the quoin is a GRC or even GRP product as these could be complicated repairs.

Sorry I do not understand the phrase GRC - GRP
I went to view the property again today and had a close look at the area in the photograph.

It turns out that the brick extension has sandstone blocks which have been covered over by the facia.

I could see where screws have been used to hold the facia's in place.
I guess I could look at replacing the lot with something different - providing we get the property, it is in the process of going through, so 2-3 weeks it should be ours.

Thanks again for the reply's, there are other horror stories inside, so I know where to come when I need some advice.

Cheers