- Step 1: Drill holes at 120mm centres along the mortar course of the masonry to be damp-proofed using a 12mm drill-bit. Holes should be drilled to a depth of 10-20mm from the back face of the wall.
- Step 2: Insert the cartridge into a mastic gun and fix the applicator nozzle. Squeeze the gun trigger and back-fill the hole to within one centimetre of the surface. When damp-proofing cavity walls, rubble infill or stone walls refer to full instructions.
Please see product images for details on drilling patterns.