Rendering grainte and stone wall

Postby Joselin » Tue Mar 10, 2009 2:12 pm


I've a external toilet and outhouse that im going to be taking down which will expose a old granite (plus random other stones) wall, I've noticed the old mortar is very crumbly and dusty so i expect it wash away with rain if i dont render or plaster the wall.

Does anyone have any knowledge on the best way to do this ?

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Simply Build It

Postby rosebery » Tue Mar 10, 2009 10:40 pm

Why not just repoint it?

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Postby Joselin » Fri Apr 10, 2009 2:30 pm


after taking down the outhouse the condition of the wall is worse than i though, the pointing has basically turned into sand.

Is there a treatment i can apply to it ? or do i have remove it all ?

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Postby welsh brickie » Fri Apr 10, 2009 7:18 pm

paint the wall with a pva solution and render using 4 sharp sand 1 lime 1 cement
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Postby youasked » Fri May 08, 2009 12:10 pm

seems a shame to cover old stone with render that then needs constant painting and then damp pushes it all off in two years?????? . Can you not power wash it all out and then lime point it all to keep some kind of feature.
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Postby bd3cc » Tue Jun 09, 2009 9:59 pm

It sounds like lime to me, so as "youasked" suggested, rake it out and repoint with a lime mix
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Postby TheDoctor4 » Mon Jul 05, 2010 6:51 pm

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