Protectasilane

Product Name:  PROTECTASILANE

Description

Protectasilane is a high-quality silane water repellent impregnant for masonry building materials. The product is designed to penetrate deeply into the capillaries of masonry surfaces, rendering the substrate water‑repellent. The treated zone reduces absorption of water, efflorescence, and other water‑borne staining materials that contribute to deterioration of masonry building materials. The treatment does not significantly alter the appearance or vapour permeability of the substrate, although slight darkening may occur on some surfaces.

Recommended Uses

Protectasilane is recommended as a water repellent sealer for concrete and other porous masonry building substrates such as stones, bricks, and ceramic tiles and grout.

Key Features

• Penetrates into masonry substrate surface.
• Permanently bonds to the substrate with no peel or blister.
• UV, alkali stable and durable formulation.
• Reduces water penetration, efflorescence and water-borne staining.
• Does not significantly change the surface appearance and vapour permeability.
• Easy application and cost effective.

As masonry materials vary, a test must be conducted prior to application to confirm product suitability.

Use Instructions

Application

• Read the product information carefully to ensure correct application and safe handling. Do not apply if rain or extreme weather is expected. The surface must be dry, firm, and free from grime, oil, or previous coatings/sealers. If required, wash with a suitable detergent and water, then allow to dry. Fill all cracks with appropriate grouting materials and allow them to cure before application. Conduct a test prior to application to determine the required number of coats and the appropriate consumption rate.
• Protectasilane can be applied by brush, roller, or spray equipment. Preferred application is by saturation flooding with a hand‑pressure or airless spray. Apply sufficient material to the surface. For vertical surfaces, apply as a thin liquid film stream running down approximately 30–40 cm. Apply a second coat immediately after the first is absorbed; this ‘wet‑in‑wet’ method saturates the surface to improve penetration.
• For horizontal surfaces, apply the product by flooding for approximately 10 minutes to ensure penetration. If the substrate absorbs the sealer quickly after the first application, apply a second coat immediately. Remove any liquid remaining after 10 minutes to prevent excessive accumulation that may cause an uneven finish.
• The number of applications depends on the permeability of the substrate. Generally, for very dense surfaces one application may be enough but for permeable substrates, two or more coats “wet-in-wet” may be required.
• Avoid splashing or spraying the product onto areas not intended for treatment. If splashing occurs, remove immediately with a cloth dampened in a suitable solvent such as mineral turpentine.

Consumption rate

The consumption of Protectasilane varies significantly depending on the permeability of the substrate.  It may be of the order of 2-20 m² per litre per coat or could be out of this range significantly.

After application

The initial surface water repellency will develop after the surface is dry.  Full curing may take 24 hours or up to 7 days.  Avoid heavy traffic or any staining for at least 24 hours.  The equipment can be washed in a solvent such as mineral turpentine.

Pilot testing and quality control

Due to the variation of building materials, it is strongly recommended that a pilot test on a small area on site should be conducted prior to application to find out the suitability of this product for the purpose.

Typical Data

• Appearance: Colourless liquid with hydrocarbon solvent odour
• Solids content: <50% by weight
• Specific Gravity: 0.79g/ml at 20 ^oC
• pH value: Not allocated
• Solubility in water: Insoluble in water
• VOC content: >50%
• Flash point: >61oC

Important Note

Protectasilane penetrates into the capillaries and renders the surface water repellent while still leaving most of the capillaries open to allow water vapour to pass through. It reduces water absorption by capillary action.  However, it has a limited resistance to water penetration particularly under prolonged contact or hydrostatic pressure. In cases where the substrate is highly permeable or exposed to extreme wind‑driven rain, resistance to water penetration and water‑borne staining may be insufficient.

Handling & Storage

Protectasilane is a hazardous, combustible material. Refer to the safety data sheet for handling instructions and follow good industrial hygiene practices. Avoid vapour inhalation and skin or eye contact by using appropriate protective equipment. Wear an air‑purifying respirator if exposure to high vapour concentrations is possible. Wash hands after handling. Store in closed containers in a cool, dry place away from fire or ignition sources. Shelf life is 12 months in the sealed original container when stored below 25 °C.

Use under sufficient ventilation away from any fire or ignition sources.

Keep out of reach of children.

Packaging

Protectasilane is available in 5, 20 and 200 litre metal drums & 1000 litre IBC.