CW-WP-01Penetrating mineral treatment
Silicon-Based Penetrating Water Repellent
Low-viscosity penetrating water repellent that forms nanoscale hydrophobic interfaces inside porous concrete, masonry and stone substrates.
- Density
- 0.93 g/cm³
- pH / solids
- pH 4-7; 8-14% solids
- Indicative application rateVerify actual uptake on the substrate
- 250 ml/m²
Overview
This low-viscosity silicon-based treatment is intended for porous mineral substrates where a penetrating hydrophobic treatment is being evaluated rather than a heavy surface film.
Concrete, masonry, stone, mortar and repair substrates differ in porosity and moisture condition; a trial area is essential before broad application.
- Concrete, masonry or stone
- Identify porosity, surface condition, moisture and any existing treatments.
- Trial area
- Record uptake, drying, appearance and water response on a representative area.
Typical applications: Concrete structures, Stone protection, Mortar and gypsum, Repair and retrofit.
Specifications and test basis
Product and application data
| Property | Value | Basis |
|---|---|---|
| pH / solids | pH 4-7; 8-14% solids | Supplied product summary; CW-WP-01. |
| Density | 0.93 g/cm³ | Supplied product summary; CW-WP-01. |
| Indicative application rate | 250 ml/m² | Supplied product summary; actual uptake varies by substrate. |
2024 submitted-sample observations
| Property | Value | Basis |
|---|---|---|
| Submitted-sample test observations | 19% water absorption ratio; 0 mm penetration | 2024 supplied test-report summary; conditions and sample only. |
The supplied 2024 report summary records the stated submitted-sample observations. A separate 2025 report includes a note that some measured items were not judged against the standard because the tested substrate differed; those values are not used as public performance claims.
Handling and selection limits
Handling / storage
- Clean the substrate and remove loose material, contamination and standing water before a trial.
- Apply evenly to saturation as appropriate for the substrate; confirm uptake and visual effect in a representative test area.
Selection limits
- Not a crack-bridging membrane, structural repair material or a substitute for drainage design.
- Performance can change with substrate porosity, moisture, contamination, cure and exposure; verify on the actual substrate.
Source documents
| Document | Applicable grade | Availability |
|---|---|---|
| Supplied penetrating water-repellent test-report extract (2024). | CW-WP-01 | Request documentation |
| Supplied silicon-based penetrating water-repellent product presentation. | CW-WP-01 | Request documentation |
Last reviewed: 09 August 2026.
Product FAQ
Will it stop all water ingress?
It is a penetrating water-repellent treatment for appropriate porous substrates, not a substitute for waterproofing design where hydrostatic pressure or active defects are present.
Why is a test patch needed?
Mineral substrates vary greatly in porosity, moisture and contaminants, all of which affect absorption, appearance and performance.
Discuss your application
Share the substrate, temperature and required test standard for a grade-specific review.