sandstone wall disappearing

[trowelmonkey1]

Hello fellas!

Got a call to look at a job this week, it's a sandstone wall, roadside that is disappearing due to traffic splashing water at it, customer wants it sorted before it falls down.

So i suggested rendering it in lime based render, NO CEMENT as it's so soft a substrate and the the wall is in a conservation area.

Anyway, he's arguing the toss with the conservation bunch right now but i've said to just render a metre up in lime only and hope they go for it, he's gone back to them so in the meantime i thought i'd clarify the best solution with you guys.

so here're the pics:

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• trowelmonkey1
• 7 Sep 2010
• 1

Untitled

• trowelmonkey1
• 7 Sep 2010
• 1

Untitled

• trowelmonkey1
• 7 Sep 2010
• 1

so i was thinjing i'd need to dub out the really bad parts, then use EML and a medium 3.5 hydraulic lime, what do you guys think?

Thanks as always

 

[roy c]

What I would do here TM is take out all the deteriated stones and replace them with old stones collected from the same area. Then repoint the whole wall. If it's in a conservation area I would be surprised if they go for the rendering option, sometimes depends on who the planning officer is!! It looks like it has been repointed in one area at some time (may have had some "new" stones put in)...If you went for this method you would have to shore the wall up in the area you are taking out and fill that area then move the shoring along as you replace the old stones with new...Good luck Seems a shame to render a nice old wall...

 

[joe-90]

Yup. Just chop out the worst and replace as you go.

Render would fall off in no time anyway.

You've got to look at work like that sympathetically. Do you have no feel for history?

 

[trowelmonkey1]

indeed i do, render would look hideous on a wall like that, customer is an old boy who wants to stop it happening again and forking out for it, there is a precedent on the street for the same work so he's doing everything he can to avoid replacing the stonework (outside of my remit by the way, just a spread ) he believes the situation of the wall and the cause means he should get some financial help from someone but i think he's got no hope, i think the conservation bods are pushing him down that way so i'll have to see if my brickie mate wants a look at it, i just wanted to make sure i was prepared should he come back to me saying they'll go for it.

 

[harleythedog]

Talk to Pete Johnson (or Thompson??) at 080 063 00010 They have a lime finish that has been approved by *Oxford and Peterborough conseravtion offices for replacement of old stone with their system. I had regular contact with these *jobs for stone not quarried since 1700's and in keeping with the existing stone shapes and sizes.

 

[trowelmonkey1]

Hi Harley,

sounds interesting thx for that info, so it's a lime render then?

 

[harleythedog]

Hi Harley,

sounds interesting thx for that info, so it's a lime render then?

Limestone, marble, hydraulic lime, pigments and hand carved to shapes on the wall. Very clever and hard to tell its not actual stone. The sample made for the Oxford job was so good , we hung it in the office. youtube Decopierre has lots of samples