Sale! Professional® Water Sealant PWS-8 EXTRA Strength Spray on waterproofing brick block sealer 5-Gallon
PWS Sealer used on Historic Sacred Heart Church Tampa FloridaPWS-8 used on UCF Engineering BuildingPWS-8 Sealer used on St Mary Our Lady of Grace Church St Petersburg FLPWS Professional Water Sealant on bricks RTV Silicone Rubber Clear Penetrating SealerProfessional Watersealant PWS-8 Water Repellant RTV Silicone Sealer for Brick Block PWS-8 ConspecPPK Watersealant PWS-8 on Pavers Conspec


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A clear, penetrating, breathable, UV Resistant, water repellent, and sealer which is 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. 10-Year Warranty available.

Clear selection

PWS-8 Extra Strength

Professional® Water Sealant & Anti-Graffitiant – PWS-8 Water Sealant is ideal for use on concrete, brick, block, precast, pavers, manufactured stone, natural stone, ArcusStone, stucco, limestone, sandstone, cedar wood, and other 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-8 Watersealant’s unique silicone technology allows it to remain flexible inside the substrate to allow for bridging of hairline cracks and protect 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. Optional 2-coat system for anti-graffiti requires use of PWS-15. Meets ASTM E-514 Water Repellency and 98-mph Wind Driven Rain Conditions. Rated Best Historic Brick Sealer on the Market!

• Provides for easy removal of graffiti
• Non-sacrificial — 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
• Deep Penetrating
• Durable & long lasting — not affected by UV rays, airborne pollutants, salt spray, or acid rain
• Withstands 98+ MPH wind-driven Hurricane force rains

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

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



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

Weight 960 oz
Dimensions 15 x 15 x 15 in
Product Size

5-Gal Pail

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