Construction Additives
Water Repellent · Silicone / Silane

SILICONE / SILANE-BASED ADDITIVES

Improves water resistance and surface protection on cementitious and coating systems, lining pores and surfaces so water beads and rolls off instead of soaking in.

Water Repellents
AppearanceClear liquid
True densitySilicone / silane
Water absorption reductionSignificant
Typical dosage0.5 – 2%
01

How Water Repellency Works

STEP 1 — PENETRATION

Migrates into the Pore Network

The silicone or silane penetrates deep into the capillary pore network of the cementitious or coated surface as it cures or reacts.

STEP 2 — HYDROPHOBIC LINING

Lines the Pore Walls

A thin hydrophobic layer forms along the pore walls without blocking the pores, allowing the substrate to remain breathable and permeable to water vapor.

STEP 3 — REPELLENCY

Water Beads & Rolls Off

Liquid water can no longer wet the pore surface, causing droplets to bead up and roll away before they are absorbed into the substrate.

02

Technical Specifications

Product Type
Silicone / Silane-Based Water Repellent
Function
Water Repellent / Surface Protection Additive
Appearance
Clear to Slightly Hazy Liquid
Active Content
90 – 100%
Recommended Dosage
0.5 – 2% on Total Formulation Weight
Vapor Permeability
Maintained — Surface Remains Breathable
Key Benefit
Reduced Water Absorption & Improved Surface Protection
Shelf Life
12 Months (Unopened, Sealed, Cool Storage)
Packaging
1 kg  •  5 kg  •  25 kg Pail
03

Application Systems

WATERPROOFING

Cementitious Waterproofing

Reduces water absorption in below- and above-grade waterproofing systems, improving long-term durability and moisture resistance.

FACADES

Exterior Wall Coatings

Protects building facades from wind-driven rain while maintaining vapor permeability for breathable exterior coating systems.

PRECAST

Precast & Masonry Protection

Improves the durability and weather resistance of exposed precast concrete and masonry elements in demanding outdoor environments.

ROOFING

Roof Coating Systems

Supports effective water shedding in elastomeric and acrylic roof coatings, helping extend roof service life and weather protection.

04

Handling & Storage

Storage Information

Storage Temperature 5°C – 30°C
Storage Condition Sealed, Protect from Moisture
Mixing Add During Formulation, Low-Shear Mixing
Moisture Sensitivity Reacts with Atmospheric Moisture — Reseal Promptly

Safety & Documentation

Compatibility Cementitious, Acrylic & PU Coating Systems
Personal Protection Refer to Safety Data Sheet (SDS)
Transport Classification Refer SDS
Documentation TDS & SDS Available on Request
Request a sample or the full technical data sheet

Our team can advise on the right grade for your stone type and exposure.

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