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Water droplets beading on a natural stone surface treated with a siliconate impregnator (Manta WS114)
Siliconates & Specialty Auxiliaries

Concentrated Siliconate Stone Impregnator | Manta WS114

Manta WS114 is a concentrated aqueous solution of alkali metal methyl siliconate, developed for the hydrophobic treatment of natural stone and mineral masonry. Applied after dilution with water, it penetrates the capillary network and reacts with atmospheric carbon dioxide to form an insoluble polymethylsiloxane barrier while preserving the natural appearance and breathability of the stone.

Grade
WS114
Chemical Name
Aqueous Alkali Metal Methyl Siliconate
Form
Colorless or light yellow transparent liquid
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Overview

Manta WS114 is a concentrated aqueous solution of alkali metal methyl siliconate for the hydrophobic treatment of porous mineral building materials. It penetrates the capillary network of natural stone and mineral masonry to give long-lasting moisture protection.

On application, the active siliconate reacts with atmospheric carbon dioxide and forms an insoluble, cross-linked polymethylsiloxane water-repellent barrier within the substrate, significantly reducing capillary water absorption while preserving natural appearance and breathability. The concentrate is water-based and zero-VOC, and its inherent alkalinity promotes a passivating effect in concrete that helps to protect reinforcing steel from corrosion.

Its closest counterpart is Manta WS115, also a concentrated alkali metal methyl siliconate for stone and masonry, with the same total solid content of 30%. The WS114 TDS adds compatibility with sodium nitrite-based antifreeze admixtures for cold-weather work and use as an additive for latex paints and polyvinyl formal (107) adhesives, while the dilution of WS115 is set by active concentration.

Key Features

  • Penetrates the capillary network of stone and masonry
  • Reacts with atmospheric CO2 to form an insoluble polymethylsiloxane barrier
  • Significantly reduces capillary water absorption
  • Preserves natural appearance and breathability
  • Water-based, zero-VOC formulation free of irritating solvent odors
  • Good weatherability, durability and abrasion resistance
  • Alkalinity promotes a passivating effect that helps to protect rebar
  • Water-reducible concentrate for straightforward application on large projects

Specifications

Typical properties of Manta WS114
PropertyTypical Value
AppearanceColorless or light yellow transparent liquid
Total Solid Content30%
Yield of Polymethylsilsesquioxane≥ 20%
Viscosity (25°C, mm2/s)8-15
pH≥12.5
Specific Gravity (25°C)1.10-1.30
Alkali Content%8-10

Typical values from the current Technical Data Sheet.

Applications

  • Natural and artificial stone: invisible moisture protection for marble, granite, limestone and engineered stone surfaces
  • Architectural masonry: impregnation of external brickwork, roofing tiles, gypsum boards and fair-faced concrete, helping to limit weathering and efflorescence
  • Coating additive: latex paints, water glass (sodium silicate) and polyvinyl formal (107) adhesives, improving water repellency while maintaining stable bond strength

How to use

Surface Impregnation (Spray Application)

  • Dilution: Dilute the WS114 concentrate with clean, potable water at a ratio of 1:10 to 1:15.
  • Application: Apply evenly using a low-pressure sprayer onto the absorbent substrate (stone, brick, or painted walls). Ensure a saturating coat.
  • Winter Construction: Fully compatible with standard sodium nitrite-based antifreeze admixtures for cold-weather application.

Related applications: Concrete, Masonry & Stone Protection · Liquid Waterproofing & Construction · Paints & Coatings

Packaging & Storage

Supplied in 200 kg drum, or customized.

Precautions & Occupational Safety (CRITICAL)

  • Highly Caustic (pH ≥ 12.5): This is a strongly alkaline industrial chemical. Applicators must wear chemical-resistant gloves, protective clothing, and safety goggles. Avoid direct skin contact. In the event of ocular exposure, flush immediately with copious amounts of water and seek urgent medical attention.
  • Metal Incompatibility (Explosion Hazard): Strictly avoid contact with active metals such as zinc, aluminum, and tin during transport and application. The chemical reaction generates flammable Hydrogen Gas.
  • Storage Vessels: Do not store in iron or unlined metal containers to prevent chemical degradation and severe container corrosion. Store exclusively in high-density plastic (HDPE) drums.

Safety and Storage

Storage: Keep in a clean, cool, and dry place. Prevent rain, sun exposure, and container damage. Maintain storage temperatures between 0°C and 50°C (Protect from freezing). Shelf life is 12 months.

Documents

Frequently Asked Questions

What dilution ratio applies for stone impregnation with Manta WS114?

Dilute the concentrate with clean, potable water at 1:10 to 1:15. Apply the diluted solution evenly with a low-pressure sprayer onto the absorbent stone, brick or painted wall, and ensure a saturating coat.

Why must Manta WS114 be kept away from zinc, aluminum and tin?

The product is strongly alkaline, with a pH of ≥12.5, and its reaction with these active metals generates flammable hydrogen gas. Do not store it in iron or unlined metal containers either, because of chemical degradation and severe container corrosion; use high-density polyethylene (HDPE) drums only.

Can Manta WS114 be applied in cold weather?

It is compatible with standard sodium nitrite-based antifreeze admixtures for cold-weather application. The product itself must be protected from freezing in storage, with storage temperatures maintained between 0°C and 50°C.

Looking for a different purity, functional group, or a structure not listed here? Contact our technical team.

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Tell us your application, target properties and estimated quantity. We will suggest grades and arrange documents or samples.

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