Rendering grainte and stone wall

[Joselin]

Hi

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 ?

thanks

[rosebery]

Why not just repoint it?

Cheers

[Joselin]

hi

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 ?

thanks

[welsh brickie]

paint the wall with a pva solution and render using 4 sharp sand 1 lime 1 cement

[youasked]

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.

[bd3cc]

It sounds like lime to me, so as "youasked" suggested, rake it out and repoint with a lime mix

[TheDoctor4]

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