Silicone Rubber is derived from inorganic silica (sand). Silicones were developed for commercial use during World War II to meet military applications requiring extreme temperature resistance. Over the years, numerous advances have been made, improving tensile strength, elongation, tear resistance, etc. Therefore, in addition to its broad temperature resistant...
Water Repellent

Professional® Water Sealant is a unique penetrating water repellent which is manufactured using room temperature vulcanizing (RTV) silicone rubber as the active ingredient. This...
Read MoreAnti-Graffiti System

Professional® Water Sealant & Anti-Graffitiant is a “Dual Purpose” silicone rubber water repellent which provides invisible protection from graffiti as well as...
Read MoreTechnical

Field testing is the most reliable way to measure performance under actual project conditions. Read more about the RILEM II.4 and ASTM C1601 field tests.
Read MoreEducation

Learn about: Preventing Water Intrusion into Above-Grade Masonry Structures Using Water Repellents. This course is available to anyone interested in learning more…
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What type of sprayer can I use to apply PWS?

We recommend the use of high volume/low pressure spray equipment. It can be anything from a pump-up garden sprayer (with solvent resistant fittings) to a diaphragm pump rig. It really depends on the size of the project. If you have more than a couple of gallons to apply, you will want to use something more substantial than a 1 gallon pump up sprayer....