Rainguard Water Sealers Brick Sealer, Penetrating Protection Against Rain and Moisture Damage, For All Brick and Mortar Surfaces, Silane/Siloxane Waterproofer, Natural Finish, Makes 2 Gallons

From the manufacturer

The Rainguard Water Sealers Brick Sealer forms an invisible barrier that protects mortar surfaces from wind-driven rain, water, oil, stains, harsh weather, and contaminants, ensuring lasting durability. The water repellent absorbs into unpainted and unsealed brick to prevent damage from cracks caused by freeze-thaw cycles, water exposure, moisture, efflorescence, stains, and long-term deterioration. Suitable for both indoor and outdoor use, the waterproofer protects the look of brick floors, chimneys, walkways, fences, walls, garden fences, and more with a flat, natural finish. Drying within an hour, it covers up to 150 sq.ft./gallon, depending on surface porosity. For optimal results, apply 2 flood coats with a handheld pump sprayer. Clean-up is also easy; simply wash with water and soap once done. Made in the USA, this water-based silane/siloxane sealer provides up to five years of protection and is free from strong odors and VOCs, making it safe for people, pets, and plants.