HYDRO-DEFEND® HB-150 Water Repellent are clear oligomeric siloxane water repellents designed to weatherproof old and new masonry against nature’s destructive forces. They provide a long lasting, breathable barrier which exhibits superior resistance to water, airborne dust and dirt, salt, acid rain, efflorescence, alkali, freeze/thaw damage and spalling. They also minimize iron staining by helping to prevent reinforcing steel from corroding and deteriorating due to water intrusion.
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* Coverage: sq ft/gal