Sydney Based + National Delivery

DPC Injection System for Rising Damp

Developed using a specialised chemistry-sector AI engine designed to model and optimise molecular behaviour within masonry pore structures.

This advanced development process allows us to deliver a highly predictable and consistently performing rising damp treatment system.

Cutting edge formula developed using  is formulated to penetrate masonry pore networks and form an internal damp-proof course when installed correctly.

made in australia

Proudly Australian Made

Premium DPC Injection products that increase job success and minimise the risk of callbacks.

Silonexx Chemical DPC Injection Fluid

  • Professional injection fluid (silane/siloxane-based)
  • Designed for predictable deep penetration in masonry
  • Designed for consistent damp-proof barrier formation

Add Rising Damp Injection to Your Services

Rising Damp can be a new revenue stream for your business.

Easy pathway for tradies who want to:

  • Specialise in DPC Injection as a business
  • Add DPC injection to their scope
  • Keep more work in-house
  • Increase margin per project

“Solvent-borne silane systems penetrate 2–5× deeper than creams or water based systems in masonry.”

Built for People Who Carry the Risk

If you’re responsible for warranty, this system is built for you.

  • Waterproofing contractors
  • Remedial builders
  • Specifiers / consultants
  • Trade supply / distribution
Silonexx DPC Injection product
Silonexx DPC Injection product

Designed for Australian Walls

Every job is different.
Different bricks. Different mortar. Different moisture load. Different surprises once drilling starts.

A chemical DPC system needs to cope with that reality — not rely on perfect walls or best-case conditions.

This approach is designed to handle:

  • Inconsistent pore structure
  • Mixed or rubble-filled construction
  • Salt-affected masonry
  • Walls that have been patched and mistreated
  • Heritage age or modern buildings

So when you inject, you’re forming a barrier that works.

Most masonry isn’t uniform. Walls vary in density, pore structure, moisture load, and internal makeup — especially in older buildings.

A properly specified chemical DPC system accounts for those variables from the outset.

By allowing for differences in absorption, internal voids, salt presence, and wall construction, a well-designed injection approach forms a continuous, reliable moisture barrier even where conditions aren’t perfect.

How Chemical DPC Injection Works

A chemical DPC injection fluid spreads through the capillary pore network of masonry and creates a water-repellent zone that interrupts rising moisture transport. The outcome depends on penetration, product quantity, continuity, and correct drill pattern.

DPC Injection fluid provides higher security for the contractor due to the fast and deep penetration of the injection fluid under pressure into tricky areas where cream products can’t reach. 

DPC Injection Fluid vs Cream

Cream systems are great for DIY  or handyman applications. However, the quantity of product and instant result of fluid injection can provide more predictable distribution and coverage.

This matters when you are warranting your work and want to walk away from your jobs with visual confirmation of product penetration into wall junctions, thick walls and around fireplaces.

DPC creams rely on slow absorption and diffusion. Fluid injection saturates the masonry rapidly under pressure, providing faster and more predictable distribution for full silicone water repellency.

Why Contractors Choose Fluid Over Cream for Rising Damp and Salt Damp

Rising damp and salt damp are common in Australian masonry — particularly in older brick construction where no physical damp-proof course was installed, or where the original DPC has broken down over time.


Salt damp is rising damp that has carried soluble salts from the ground into the wall. As moisture evaporates, salts crystallise within the pore structure, causing plaster failure, spalling, and ongoing damage. Treating salt damp requires the same chemical DPC injection approach as rising damp — but wall condition assessment is more critical because salt-affected masonry often has compromised pore structure.

 

Fluid injection systems are the preferred choice for both conditions in professional remedial work. The low viscosity of a solvent-borne silane fluid allows it to penetrate deeply under pressure, reaching through compromised or irregular masonry where cream systems stall. This matters when warranting the outcome — a continuous barrier formed through the full wall thickness is the only reliable result.

Silonexx Spec Snapshot

  • Form: Injection fluid
  • Use: Chemical DPC for rising damp in masonry
  • Suitable substrates: Brick / block / stone (subject to structure)
  • Delivery: Injection into drilled mortar joints / masonry
  • Key requirement: Correct drill spacing, depth, and continuity

FAQ

  1. Is DPC injection permanent?
    A correctly installed chemical DPC can be long-lasting — typically decades — provided the barrier is continuous and wall conditions are compatible. Performance depends on correct installation depth, spacing, and product volume. Walls with significant voids, heavy salt load, or structural movement may require reassessment over time.
  2. Do I need cream or fluid?
    Depends on wall structure. Uniform modern brick = either; irregular/voided = fluid often safer.
  3. Can you inject sandstone or rubble-filled walls?
    Sometimes. These are higher-risk and require method changes and honest constraints.
  4. What causes most failures?
    Discontinuous barrier, wrong depth/spacing, voids, salts, and misdiagnosis.
  5. Do you sell to homeowners?
    We mainly supply to trades. the probability of failure is higher without repeated exposure and practice. Warranty for outcome is limited with DIY applications due to higher chance of possible under dosing, improper diagnosis and missing moisture entry points.
  6. How do I buy Silonexx?
    Use the buy/quote form or contact for supply/distribution.