cob walls

Discussion in 'Builders' Talk' started by jampot, Oct 18, 2005.

  1. jampot

    jampot New Member

    anyone know a succsesful way of getting things to fix into cob walls without falling off or pulling out
     
  2. Ghost-1

    Ghost-1 Active Member

    ARALDITE
     
  3. chappers

    chappers Member

    The only two ways I have found that work are to either hammer in a decent bit of timber and re cob around it or drill your hole fill with gripfil insert your rawplug leave gripfil to go off then screw into it.
     
  4. bodget&scarpers

    bodget&scarpers New Member

    what exactly is a cob wall,never heard of them ?
     
  5. chappers

    chappers Member

    cob is essentially clayey mud and straw.it can be either used as a coating over say straw bales or as a structural wall in its own right
     
  6. bodget&scarpers

    bodget&scarpers New Member

    so a bit like the old wattle and daub walls?
    and which part of the country is this done.
     
  7. Hitch.

    Hitch. New Member

    I believe the technique is most widely used in Devon, due to it good quality clay subsoils. The technique has been widely used round here for about 500 years.

    The most succesfull way i have found as above is to hammer in a piece of wood, at a slight angle (opposing the load)where possible, then make good around it.
     
  8. chappers

    chappers Member

    thats the best thing about cob if it gets damaged just slap a bit more mud back in let it dry and a quick limewash and its as good as new.
    really old well compacted cob can be as hard as concrete though.
    there is a bit of cob stuff up our way round Oxford too.
     
  9. Hitch.

    Hitch. New Member

    Cob is fine... untill... modern plasters/ renders are introduced onto it.
    These dont alow the cob to dry out after a damp period, keeping it in an almost permanantly damp state. You can imagine the rest!
     

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