Sbr & slate wall capping

[AFKMatrix]

Hi there,

I have never laid any paving before but I am pretty confident in doing DIY jobs.

So at the end of last year I had my back garden re-landscaped. I choose to have Marshalls blue slate for the patio and then had white rendered walls with a capping of the same slate.

Now unfortunetly the slate cappings are all comming off! I have looked around and seen the infor on this site about using SBR and this sounds ideal. But I wanted to just check on how to do it and what mix to use to attach the wall cappings.

So how should I mix the SBR mix?
What cement mix should I use on top of the wall to stick the slate down?
Do I put down the cement mix on the wall then apply the SBR to the slate slab and then stick it down?

Also these slabs overhang the wall so the grouting is going to be fun. It seems though that the grouting also didn't stick to the slate. So can I put some SBR on the edge of the slate and let that dry and then apply the grout? Or should I let the slate stick to the top of the wall then paint on the SBR then do the grouting.

I really appreciate any help you can give me.

[lemoncurd1702]

If the cappings have come off but the cement bed is still fixed to the wall then just fix the capping back on with a sticky sbr/cement mix creamy consistency. Just make sure the cappings go back in their original position so the cement profile matches that of the cap.

[AFKMatrix]

Thanks for your advice lemoncurd1702 and sorry for the late reply. I took your advice and have done a test on one of the slate tiles and it seems to have stuck well, but I suppose only time will tell!!

So just one more question if I may, I will need to grout the slate tiles again as that too has all come away from the walls. So the landscaper has said that he used Everbuild geo-fix in grey colour for the grout and I obviously want to use it again so the colour matches the existing grout. I was wondering though can I mix in some SBR to this Everbuild grout so that it sticks better this time around?

Thanks.

[Tony McC]

1 - sack this pillock of a 'landscaper' - no-one who knows anything about hard landscaping would ever use that rubbish.

2 - under no circumstances waste good money on that rubbish - do a search on this forum to see how many problems there have been over the years.

3 - under no circumstances waste good SBR by mixing it intyo that rubbish. It's a waste of a good bonding/waterproofing agent.


In all seriousness, Geo-Fix (often spelled with a 'u' rather than an 'i') is not suitable for mixing with SBR or any other bonding agent. It has its own (pretty pathetic) resi-ish binder and this struggles to harden under normal circumstances. Adding anything else is quite likely to counter the intended perfomance of that resin-ish binder.

[AFKMatrix]

1 - sack this pillock of a 'landscaper' - no-one who knows anything about hard landscaping would ever use that rubbish.

2 - under no circumstances waste good money on that rubbish - do a search on this forum to see how many problems there have been over the years.

3 - under no circumstances waste good SBR by mixing it intyo that rubbish. It's a waste of a good bonding/waterproofing agent.


In all seriousness, Geo-Fix (often spelled with a 'u' rather than an 'i') is not suitable for mixing with SBR or any other bonding agent. It has its own (pretty pathetic) resi-ish binder and this struggles to harden under normal circumstances. Adding anything else is quite likely to counter the intended perfomance of that resin-ish binder.

Ok well the landscaper has finished the garden so can't fire him I'm afraid!

My only issues is that this grout has been used elsewhere on the patio, so I was going to use the same stuff so the colouring would match.

So what would be a good grout to use Tony? I can do a small out of the way area to see how different the colour is to the existing grout.

Thanks.

[Tony McC]

Have a look at the 2-part slurry mortars trialled and tested on the main website....example