Sale! Professional® Water Sealant PWS-15 SUPER Strength Spray on waterproofing brick Split Faced block sealer 1-Gallon
PWS Sealer used on UCF Public Safety Center BuildingPWS Sealer used on Historic Weil Hall University of FloridaPWS-15 Sealer used on Lake County Courthouse Tavares FLProfessional Watersealant PWS-8 Water Repellant RTV Silicone Sealer for Brick Block PWS-8 ConspecProfessional Watersealant PWS-15 Sealer Split Faced Block Sealer ConspecProfessional Watersealant PWS-15 Sealer for Split Faced Concrete Block


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A clear, penetrating, breathable, UV Resistant, water repellent, sealer, and anti-graffiti formulated using the latest in durable RTV Silicone Rubber Technology. Capable of bridging hairline cracks (400% elongation) and Resisting 98-mph Wind Driven Rain Conditions. PWS-15 is a “Dual Purpose” water repellent / graffiti protection sealer for extremely porous vertical substrates.  Cures in 1 hour.

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PWS-15 Super Strength

Professional® Water Sealant & Anti-Graffitiant – PWS-15 Water Sealant (Recommended for Extremely Porous, Vertical Substrates Only) is ideal for use on concrete, brick, block, fluted block, split face block, Haydite, and other very porous building materials. This clear, penetrating, RTV Silicone sealer is a proprietary blend of inorganic silicone polymers which provide maximum resistance to breakdown from the suns damaging UV light, as well as resistance to acid rain. PWS-15 Watersealant’’s unique RTV silicone technology allows it to remain flexible inside the substrate and allow for bridging of hairline cracks and protection against building freeze-thaw cycles. Once installed it remains breathable to allow moisture vapor to escape while preventing outside water penetration. Simple 1-coat application, 10-Year warranties available. 2-coats required when using PWS-15 as an Anti-Graffiti Coating system. Meets ASTM E-514 Water Repellency and 98-mph Wind Driven Rain Conditions. PWS-15 Super Strength is rated the Best Split Faced Block Water Repellent & Sealer on the market today.

• Provides for easy removal of graffiti once installed
• Non-sacrificial — , wont break down, withstands repeated cycles of graffiti removal with no requirement to reapply the water repellent anti-graffitiant
• Stops water intrusion, as well as provides graffiti protection
• Cost effective
• Easy to apply with low-pressure pump-up sprayer
• Bridges hairline cracks
• Breathable — allows moisture vapor to escape while preventing water penetration
• Penetrating & Anti-Graffitiant
• Durable & long lasting — not affected by UV rays, airborne pollutants, salt spray, or acid rain
• Withstands 98-MPH wind-driven Hurricane force rain

FOR INDUSTRIAL USE ONLY. For use by trained, experienced professionals, and contractors.


Due to Federal VOC Regulations the PWS formulations sold by Conspec are not available in the following states:
CA, CT, DE, DC, IL, IN, ME, MD, MA, NH, NJ, NY, OH, PA, RI, UT, (AZ Maricopa County), and (VA Richmond area), 
If your state or county is listed above you MUST use the LOW VOC Formula
To order the LOW VOC Formula please call;

Professional Products of Kansas at;   1-800-676-7346



To view the most recent manufacturer data sheet, please click here.

Weight 192 oz
Dimensions 12 x 12 x 12 in
Product Size

1-Gal Can

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