APOC 581 is a 100% silicone roof patch and waterproof sealant designed for durable, long-lasting repairs. It applies by brush or trowel across a wide temperature range and resists ponding water, making it ideal for roofs, flashing, seams, and penetrations.
Key Features:
100% Silicone Formulation: Delivers superior waterproofing and long-term flexibility
Wide Application Temps: Apply between 35–110°F for reliable year-round repairs
Ponding Water Resistance: Stands up to standing water to protect vulnerable areas
ASTM C920 Performance: Meets rigorous standards for sealants and joint fillers
Easy Application: Brush or trowel on; bright white finish integrates with silicone roof coatings
Specifications Table:
Specification
Details
Series Name
581
Container Size
0.9 gallon (3.4 L)
Color/Finish
White
Composition
100% Silicone
Drying Time
360 minutes (approx.)
VOC Level
50 g/L
Waterproofer
Yes
Elastomeric
No
Fibered
No
Cement
No
Application Temperature Range
35–110°F
Coverage
Up to 12.5 sq ft at 1/8 in thickness
For Use With
Silicone roof coatings
Standards/Compliance
Meets ASTM C920
Warranty
Limited lifetime
CA Residents: Prop 65 Warning(s)
Yes
UNSPSC
30151500
Application Methods
Brush or trowel
Typical Uses
Roofs, flashing, curbs, penetrations, HVAC, seams
Frequently Asked Questions (FAQ):
Q: What surfaces or systems is this compatible with? A: Use with silicone roof coatings; not recommended for acrylic, aluminum, or asphalt coatings.
Q: How is it applied? A: Apply by brush or trowel; coat damaged area, embed reinforcing fabric while wet if needed, and apply a second layer.
Q: What is the coverage? A: Up to approximately 12.5 sq ft at 1/8 in thickness per 0.9-gallon can; coverage varies by surface texture.
Q: What is the dry time? A: Approximately 360 minutes to dry, depending on conditions.
Q: Does it have a warranty? A: Yes, it carries a limited lifetime warranty.
A Crisp, Architectural Seal in Brilliant White
This silicone patch brings a clean, luminous finish that quietly elevates utilitarian roof details. I love its bright white hue and smooth brush-on texture—beautifully minimal yet fiercely durable. Use it to refine seams and penetrations, then top with a silicone coating for a cohesive, modern roofscape. It’s a discreet luxury: performance-first protection that keeps the whole envelope looking pristine.
Seal leaks for good—choose APOC 581 today for a durable, silicone-strong roof repair.
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