Product Data Sheet

Water-based silicone elastomer for waterproofing above-grade exterior masonry substrates.

DOWSIL™ ALLGUARD Silicone Elastomeric Coating is a one-part, 100% water-based silicone elastomer supplied in three tint bases for pigmenting at distributor locations. The coating is typically applied in two coats. The use of DOWSIL™ ALLGUARD Primer may be necessary based on the substrate. The coating can be roller, brush, or spray applied. It cures to form a flexible membrane that is impervious to water but has the ability to “breathe,” allowing water vapor to escape from inside the substrate.

Its matte finish minimizes brush and roller marks. The coating offers long-term waterproofing protection, withstanding hurricane-force, wind-driven rain; normal movement imposed by seasonal thermal contraction and expansion; ultraviolet (UV) radiation; and the elements. The coating maintains its water protection properties even when exposed to sunlight, rain, snow or temperature extremes.

Once pigmented, it is a ready-to-use material that can be applied between -6°C (20°F) and 38°C (100°F) to a clean, dry surface. The average drying time is 4 to 8 hours, depending upon temperature, humidity, and wind conditions. If the temperature drops below -6°C (20°F) after the coating is applied, the average drying time will increase. DOWSIL™ ALLGUARD Elastomeric Coating requires temperatures higher than -6°C (20°F) for a cumulative total of 24 hours to dry.

DOWSIL™ ALLGUARD Silicone Elastomeric Coating will attain full adhesion and physical properties in 7 to 14 days.

DOWSIL™ ALLGUARD Silicone Elastomeric Coating is available in more than 55 standard colors or can be custom colored to order.

Features & Benefits

• Offers long-term waterproofing protection
• Maintains water protection properties even when exposed to sunlight, rain, snow, or temperature extremes

Applications

• DOWSIL™ ALLGUARD Silicone Elastomeric Coating is designed to waterproof abovegrade exterior masonry substrates, such as concrete block, fluted block, brick, stucco, synthetic stucco, poured concrete, precast concrete, exterior insulation finish systems (EIFS), and previously coated masonry substrates.