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Glass block cracking in mortar joints

  • There is insufficient allowance for structural movement around the glass block panel

    How to repair

  • Wall has inadequate strengthening to withstand the imposed structural loading 

    How to repair

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Glass block crumbling mortar

Glass block stains

  • Alkaline run-off from cement mortar such as an external wall or where the glass block wall is part of a shower

    How to repair

Cavity brick or concrete block veneer – efflorescence

  • Moisture in the bricks causing salts to migrate to the surface leaving a whitish-grey residue

    How to repair

Cavity brick or concrete block veneer – crumbling mortar

Cavity brick or concrete block veneer – crumbling bricks

  • Ground moisture being absorbed by bricks and moving up the wall due to deteriorating or missing damp-proof membrane, or plaster or soil bridging the damp-proof membrane

    How to repair

  • Frost causing expansion of moisture in bricks

    How to repair

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Cavity brick or concrete block veneer – cracks in mortar

  • Differential settlement of the building caused by swelling/shrinking of clay soils, inadequate foundations or tree roots under the foundations, and indicated by cracks in the mortar stepped across the face of the wall

    How to repair

  • Soil load behind basement wall causing deformation

    How to repair

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Cavity brick or concrete block veneer – cracks in bricks

  • Differential settlement of the building caused by swelling/shrinking of clay soils, inadequate foundations or tree roots under the foundations, and indicated by cracking through the bricks 

    How to repair

  • Soil load behind basement wall causing deformation

    How to repair

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Cavity brick or concrete block veneer – cracks in lintel

  • Corrosion of steel lintel bar supporting the bricks

    How to repair

  • Differential settlement of the building caused by swelling/shrinking of clay soils and inadequate foundations

    How to repair

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Cavity brick/concrete block veneer – blocked ventilation slots