Sydney Based + National Delivery
Sydney Based + National Delivery
Chemical DPC systems come in two formats: fluid and cream.
Both use silane chemistry to form a hydrophobic zone within masonry, but the way the product gets into the wall, and how far it travels once it’s there, is fundamentally different.
For a contractor warranting the outcome of a rising damp treatment, that difference matters. For a smaller DIY job on a straightforward single-skin wall, it often doesn’t.
Cream systems are higher-viscosity products that rely on slow passive diffusion through the masonry after being loaded into drilled holes. The product sits in the hole and migrates gradually into the surrounding substrate over time.
This works when conditions are predictable. Uniform modern brickwork with consistent porosity and a single-skin wall gives cream enough time and enough pore access to distribute adequately. The process is slower and doesn’t require specialist injection equipment, which is why cream is the practical choice for DIY applications and smaller straightforward jobs.
Where cream struggles is in older construction, thicker walls, walls with variable absorption, or anywhere the geometry is irregular. In those conditions, passive diffusion stalls before coverage is complete and the resulting barrier is discontinuous.
Fluid systems are low-viscosity products injected under pressure. The fluid is driven through the interconnected pore network across the full wall width, reaching wall junctions, thick sections and areas of variable absorption that cream can’t reliably penetrate.
The pressure injection process also gives you something cream cannot: visual confirmation. During injection, fluid movement becomes visible at adjacent holes, confirming the product is distributing through the wall before the sequence is closed out. For contractors carrying warranty responsibility, that confirmation is the difference between a treatment you can stand behind and one you can’t.
Fluid injection is the standard method for professional remedial work on Australian masonry, particularly pre-1960s brick construction, heritage walls with lime mortar, rubble fill or salt-affected zones.
The decision comes down to wall type, risk tolerance and who is doing the work.
Cream is appropriate for uniform single-skin modern brick, smaller jobs and DIY applications where the wall conditions are simple and the risk of a discontinuous barrier is low.
Fluid injection is appropriate for professional rising damp treatment where the wall carries complexity, age, thickness, irregular masonry, salt load, heritage construction, and where the treatment needs to be warrantable.
Silonexx is a professional-grade fluid DPC injection system. The installation specification covers drill pattern, hole spacing and product volume per wall type, giving contractors a documented basis for warranting the outcome.