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Cool-Sil HB

  • Meet sustainability goals
  • Easy application
  • Exceptional waterproofing

Cool-Sil HB is a silicone rubber fluid-applied roof system that is solvent-free, high solids, one-component, and moisture-curing. This system restores aged smooth surface BUR, granulated cap sheets, single-ply membranes, and metal roofs. It can also be used as a repair material for maintenance applications. Cool-Sil provides excellent UV resistance, adhesion, and breathability and has exceptional waterproofing properties. It is easily applied by roller, squeegee, or brush. Ready to use - This one-part material can be applied easily to a dry, moisture-free, and clean surface and is quickly rain-safe. It fully cures in 1 to 4 hours based on temperature and humidity by reacting with moisture in the air. Protective - Cool-Sil HB provides long-term protection because it resists weathering, aging, oxidation, rain and snow, the effects of ozone, ultraviolet radiation, and temperature extremes typically found on roofs. Durable - With its high solids content and absence of hydrocarbon solvents, Cool-Sil provides a thick, durable, mold and mildew-resistant roof covering that performs in a wide temperature range in the most severe climatic conditions.

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Meet Sustainability Goals

A Cool-Sil roof’s bright white finish has a high r-value, reflecting sunlight and reducing the heat collected by the building and the demand on energy-intensive air conditioning systems. Cool-Sil’s NSF 61 certification means that a cured roof surface can come into contact with potable drinking water sources with no harmful leaching. And a fluid-applied system like Cool-Sil can extend a roof’s useful life by over a decade without replacing the original roof, reducing the construction waste that goes to landfills.

Coating being applied to commercial roof

Ease of application

Applicators can use the method best suited for the one-component material to coat existing aged smooth surface BUR, granulated cap sheets, single-ply membranes, or metal. After application, Cool-Sil cures in as little as one hour by reacting with moisture in the air. With its high solids content and absence of hydrocarbon solvents, Cool-Sil provides a thick and durable monolithic covering that is also mold and mildew resistant and performs across a wide temperature range.

Sun beam in Dark Clouds and Sky before Thunderstorm

Exceptional weatherproofing

Cool-Sil protects come rain or shine. The characteristics of silicone create a roof surface where water easily runs off, minimizing the ponding areas that, over time, can lead to leaks. And with Cool-Sil's 0.89 Solar Reflectance, tested to the ASTM C1549 standard, your roof is designed to fight against UV radiation, keeping the building cool.

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RMer Span Curve Panels are being installed onto the North County Regional Library