Slate water feature - Is falling down

Patio flagstones (slabs), concrete flags, stone flags including yorkstone and imported flagstones.
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London Stone Paving
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Post: # 63315Post London Stone Paving

Any chance of some advice from the best brains in the business? We installed this slate water feature at our showroom six months ago.

Image

I am sure the picture is self explanatory but just for information there is a reservoir at the bottom with a pump in which pumps the water out over the slate through a stainless steel spill at the top. Noticed that a few of the slates were starting to come loose and its reached the point now where the whole slate front is floating. I am pretty sure I know what caused the problem. The slate cladding is fixed to a rendered block wall and we made the mistake of sealing the render once it had gone off. I think that sealing the render has compromised the adhesion between the slate and the rendered blockwork.

Obviously when we re-do it we wont be sealing the render but I was wondering if anyone could give me any advice on construction methods to avoid it failing again

Cheers

Steve

lutonlagerlout
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Post: # 63319Post lutonlagerlout

dont seal the render before cladding it steve
use sbr in the render and prime the dry render with sbr before sticking the slate on
maybe some EML might add to its strength
cheers LLL :)
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London Stone Paving
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Post: # 63324Post London Stone Paving

Cheers Tony

London Stone Paving
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Post: # 63424Post London Stone Paving

Just to confirm Tony

1. SBR in the render mix

2. Prime finished render with SBR

We are planning to use a rapid setting external adhesive to fix the slate to the wall. Does the above advice stil stand and is there any further precautions that could be taken?

Thanks

Steve

lutonlagerlout
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Post: # 65078Post lutonlagerlout

saw the culprit straightaway today steve
thermalite or celcon blocks are NOT suitable for outdoor work
you started off with breeze then went to 1 of the above fail blocks
something like that you should of used concrete blocks or semi-engineering bricks
cheers LLL
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London Stone Paving
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Post: # 65097Post London Stone Paving

Cheers for the advice there Tony. Projects gone on hold for the the next few weeks at least.

As you have seen today there are quite a few bits at the showroom which need to be finished off. We have had one guy working on it for quite a while now.

We always make the mistake of trying to do everything ourselves. We would be better off just getting someone in to come and do all the work for us.

If we build any more displays we will just get a design done and then go through the standard procedure of getting 3 quotes for the construction.

Pablo
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Post: # 65106Post Pablo

Or do a deal with a someone you trust in return for recommends and advertising. If their names going to be on it then they'll do it right.
Can't see it from my house

dig dug dan
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Post: # 65108Post dig dug dan

I propose LLL for the work. any seconders?? :D
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ilovesettsonmondays
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Post: # 65128Post ilovesettsonmondays

pablo is right . my m8 done one at our local builders merchants . dont it for nothing .took 2 weeks . had his money back for lost wages and alot more now

lutonlagerlout
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Post: # 65130Post lutonlagerlout

dig dug dan wrote:I propose LLL for the work. any seconders?? :D
DDD? :)
not enough hours in the day for me right now dan
I like to get out and do a bit but got to be organising stuff non stop
what about mr ilovesettsonmondays?
cheers LLL
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