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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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General: wall ties

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  1.  
    • CommentAuthorandrewh
    • CommentTimeMay 10th 2008
     
    We have a random rubble cottage that we are renovating in lime and have been advised to tie the two walls together on the upper floor in the corner where we have some bowing .Some time ago a structural engineer recommended using a type of bendable wall tie that would go around the exposed stonework on the outside then goes through the 18 inch stone wall on the inside and returns again to the outside linking the two skins. Obviously it has to be some sort of wire(stainless steel??) Any advice on thicknessess/makes would be great.. Yous ignorantly Andrew
    • CommentAuthortony
    • CommentTimeMay 10th 2008
     
    I would go for standard remedial wall ties and drill extremely carefully through a stone and the cavity part way into a stone in the other skin and gingerly tighten the expanding heads of the tie without splitting the stone. I would use a diamond drill not on hammer too. Resin ties would work too but are incredibly difficult to install.

    I would not have thought flexibly tying would be worthwhile. How long has the wall been there? Is it moving? Do you have earthquakes? Was it built bowing?
    • CommentAuthorandrewh
    • CommentTimeMay 11th 2008
     
    its a 300yr old shippen . I dont think it was built bowing as there is now a crack between it and the cob which abuts it.
    The crack has opened up slightly since we have been removing the cement render and replacing rotten lintels.

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