Granpowder
HP-30
Granpowder HP-30 is a dry hydrophobic additive for cementitious dry-mix formulations for building materials. It improves the hydrophobicity of treated cement-based products and dramatically decreases the ingress of water.
Key Features
Free-Flowing Dry Powder
Supplied as a uniform, free-flowing white powder that blends quickly and evenly into cementitious dry-mix batches.
Easy Dry-Mix Integration
Designed for straight addition to the dry portion of mortar, grout, stucco, concrete, EIFS, and other mineral renders—no heating or special equipment required.
Powerful Hydrophobicity
Silane-based chemistry dramatically lowers water absorption and blocks capillary transport, keeping moisture out of finished building materials.
Efflorescence Prevention
By limiting water ingress, the additive minimizes or eliminates unsightly salt bloom on surfaces, preserving long-term aesthetics.
Low Dosage, High Impact
Typical use level is just 0.2–0.4 lb per 100 lb of cementitious dry mix, delivering robust water-repellent performance with minimal formulation change.
Broad Application Compatibility
Effective across a wide range of dry-mix products—including mortar, grout, stucco, concrete, joint fillers, and mineral plasters—making it a versatile choice for manufacturers.
Stable Shelf Life
Maintains full activity for up to six months when stored in unopened containers at 50 – 100 °F, ensuring reliable performance throughout normal inventory cycles.
Benefits
✔ Strong water repellency
✔ Prevents efflorescence
✔ Free-flowing, easy blend
✔ Low dose, high impact
✔ Fits any dry mix
Sample Request
See the difference for yourself. Our products are engineered for performance, and we believe you'll notice it from the first application. Request a sample today and experience the quality, consistency, and innovation behind every formula.