Expansion joint query

Discussion in 'Builders' Talk' started by scaa_1978, Jun 29, 2020.

  1. scaa_1978

    scaa_1978 New Member

    Evening all.

    The attached photo shows the expansion joint in our house at external ground level.

    Expansion joint is sealed with silicone until ground level. Below this, where I have moved the stones away, there is no silicone but what appears to be mortar set back around 10mm from the face of the brick.

    Is this a botch up or how it should be?


    Attached Files:

  2. Severntrent

    Severntrent Screwfix Select

    Are you sure its mortar and not a type of compressible packing (i.e. polystyrene) that is used as to fill the joint and then in theory the mastic on top adheres to the wall and expands/contracts with the wall and maintains the watertight integrity at the joint
  3. scaa_1978

    scaa_1978 New Member

    It very well could be a compressive packing. That being the case, is it an issue that the small piece at the bottom is not covered with mastic?
  4. Severntrent

    Severntrent Screwfix Select

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