Sub-Slope Silicone
High-Solids Silicone Coating Designed for Ponding Water
Sub-Slope Silicone is a 100% silicone roofing coating engineered specifically for areas prone to ponding water. With 96% solids content and exceptional durability, this elastomeric coating creates a seamless, weather-resistant barrier that withstands constant water exposure, extreme temperatures, and UV degradation.
From structural low spots to roof drains and scuppers, Sub-Slope Silicone delivers the performance you need where water naturally collects. Its moisture-cure technology ensures strong adhesion even in humid conditions, making it the ultimate solution for low-slope commercial roofing challenges.
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Features & Benefits
Superior Ponding Water Resistance
- Specifically formulated for areas with standing water
- Resists water penetration and ponding water degradation
- Maintains integrity through wet-dry cycling and freeze-thaw conditions
High-Solids Performance
- 96% solids by volume for maximum coverage and minimal shrinkage
- One-coat application with thickness control and uniform coverage
- Low VOC content (<50 g/L) meets environmental standards
Excellent Flexibility & Durability
- Maintains elasticity from –80°F to 300°F
- Accommodates building movement and thermal cycling
- 325% elongation with strong recovery properties
UV Stable & Weatherproof
- Superior UV resistance prevents degradation and chalking
- Resists impact, hail, and abrasion damage
- Long-term color and gloss retention in harsh climates
Easy Application & Maintenance
- Single-component, moisture-cure formula requires no mixing
- Brush, roll, or spray application
- Compatible with most existing roof substrates
Where to Use It
- Low spots and areas with chronic ponding water
- Around roof drains, scuppers, and gutters
- Structural depression areas and deflection zones
- Areas where slope cannot be corrected
- HVAC equipment pads and rooftop utility areas
Technical Highlights
- Solids by Volume: 96%
- VOC Content: <50 g/L
- Application Rate: 1.5–2.0 gallons per 100 sq ft
- Dry Film Thickness: 60–80 mils
- Tensile Strength: 300 psi (ASTM D-412)
- Elongation: 325% (ASTM D-412)
- Tear Resistance: 60 lbs/inch (ASTM D-624)
- Shore A Hardness: 25 (ASTM D-2240)
- Service Temperature: –80°F to 300°F
- Reflectivity (White): 0.88 (ASTM C-1549)
- Emissivity (White): 0.91 (ASTM C-1371)
- SRI: 112 (CRRC)
- Tack-Free Time: 1–2 hours
- Full Cure: 7–14 days (humidity dependent)
- Available Colors: White, Gray, and Tan
- Packaging: 5-gallon pails and 50-gallon drums
Supporting Resources
- • 96% solids by volume for maximum coverage
- • Specifically designed for ponding water areas
- • 325% elongation with strong recovery
Take Action Today and Eliminate Ponding Water Problems
When water pools, ordinary coatings fail. Sub-Slope Silicone is engineered to thrive in ponding water conditions—delivering unmatched durability and waterproofing where you need it most. Stop letting structural low spots compromise your roof system and start protecting with confidence.