DPC (Damp Proof Course) cream is applied using a two-step process: drilling and injection.
Step 1: Drilling Holes
First, drill 12mm diameter holes horizontally into the mortar joint, 150mm above ground level. If this isn't feasible, alternative methods (flanking works) are necessary to prevent the damp proof course from bridging. This step ensures proper placement for effective damp proofing.
Step 2: Injection
Next, carefully inject the DPC cream into the boreholes. Use a low-pressure sprayer or a cartridge gun for controlled application. This ensures even distribution of the cream within the mortar joint, effectively sealing it against rising damp.
Important Considerations:
- Hole Diameter: Maintain a consistent 12mm diameter for optimal injection.
- Hole Placement: Precise placement at 150mm above ground level is crucial for effectiveness. Consider alternative methods if this is impossible.
- Injection Method: Use a low-pressure sprayer or cartridge gun to avoid over-pressurization.
This method effectively seals the mortar joints, preventing moisture from rising and damaging the structure.
