Silicone Hydrophobic Powder

Silicone hydrophobic powder is a popular addive used in dry mortar formulations to enhance water repellency and durability of the finished mortar. It is particularly effective in improving the resistance of mortars against water penetration, which can be beneficial for exterior wall finishes, facades, and other construction applications where moisture resistance is important. Waterproof cement-based building materials for added durability with less maintenance

Items	WS-80	WS-90
Appearance	White powder, free flowing
PH value (10% aqueous solution)	5.5~8.5
Bulk density	200~400g/L
80 mesh pass rate	≥99.0%
Odor	Non
Moisture content	≤6%

Features of Silicone Hydrophobic Powder for Dry Mortar:

Water Repellency: Creates a hydrophobic (water-repelling) barrier on the surface of the mortar.
Enhanced Durability: Helps prevent water ingress, reducing the risk of cracking, efflorescence, and other water-related damages.
Easy to Mix: Usually supplied as a fine powder that can be easily mixed with dry mortar components.
Good Compatibility: Suitable for use with various types of dry mortar, including cement-based, plaster, and wall render mortars.
Improves Longevity: Extends the lifespan of mortar in harsh weather conditions.

Recommended Application:

Joint filler

Waterproof mortar

Decorative mortar

External wall insulation system mortar

Method of Use:

Package into finished products after mixing with other dry powder components evenly, and use it after mixing with the recommended amount of water on site.

The recommended dosage is 0.2%-0.5% by weight of dry powder, which will hardly affect the compressive strength of the material.

Packing Specification:

Standard packaging: 20 kg paper bag lined with polyethylene film.

Storage Conditions:

It is recommended to store in a dry place below 30℃, avoid moisture and direct sunlight, and use it within 12 months.

If the product is not used up, the packaging must be tightly sealed to prevent moisture intrusion.