Cavity brick/concrete block veneer – blocked/missing drainage slots

Cause

Slots blocked by dirt, soil, foliage

Repair

  • clean out to remove blockage from slots

Cause

Slots sealed/blocked during previous maintenance work

Repair

  • clean out to remove blockage from slots

Cause

Ground level or paving built up to cover slots

Repair

  • lower ground level to expose slots; clean out as necessary

Cause

drainage slots not originally provided

Repair

  • remove mortar from every third vertical joint in the bottom course of veneer