Installation Method Overview – Chemical DPC Injection

Purpose of the Method

The installation method determines whether a chemical DPC forms a continuous damp-proof course.

Product choice alone does not compensate for poor drilling, incorrect injection height, or incomplete coverage.

Set the injection line at the intended DPC height
Typically just above external ground level or internal floor level
Maintain a consistent horizontal line across the wall, including returns and junctions

Bridging above or below this line will compromise performance.

Drilling must suit the wall type and construction.

Method adjustments may be required for:

Thick masonry
Mixed or rubble-filled walls
Stone or sandstone construction
High moisture or salt content
Extruded bricks should be injected above the extrusions to allow product to fill the extrusions below

No single method suits all walls.

These issues commonly lead to failure.

Applicator product supply options.