Causes/Remedies for Crumbling Sandstone?

Discussion in 'Builders' Talk' started by glob@l, Sep 11, 2019 at 1:25 PM.

  1. glob@l

    glob@l Active Member

    If this was happening outside I would suspect the damage was caused by water penetration and the weather generally. This is happening inside a 150 year old stone built semi detached cottage on the adjoining (attic) gable. There is a dissused joint chimney stack vented from the top and the adjoining roof tiles are bridged (cement bedded) with ridge tiles. I'm not aware of any evidence of water penetration elsewhere in the house. Looking at it you would think it was okay, but poke it with a finger and it crumbles?
    Last edited: Sep 11, 2019 at 1:34 PM
  2. KIAB

    KIAB Well-Known Member

    Sandstone is porous,it will soak up any moisture,water.
  3. glob@l

    glob@l Active Member

    The attic is insulated between the ceiling joists, so the roof space will be cold in the winter and warm in the summer. Is that wall likely to attract any airborne moisture as condensation when it's cold.
    Apart from identifying the cause, how do you remedy crumbling sandstone?
  4. glob@l

    glob@l Active Member

    Can anyone offer a remedy for crumbling sanstone? Would the above post suggest the moisture is caused by leakage or perhaps airborne moisture? There are a few members who seem to have a good knowledge in this area.
  5. Joe the Plumber

    Joe the Plumber Active Member

    You could try asking the conservation specialists at any large church or cathedral. Unfortunately though, from what I've seen, they tend to repair it by replacement rather than by applying some magic potion.

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