AWF PRO

AWF PRO Silicone Roof Patch & Flashing Mastic – High Solids Waterproof Roof Sealant for Leaks, Seams, Penetrations & Fasteners – Low VOC, UV Resistant, White, 2 Gallon Pail

AWF PRO Silicone Roof Patch & Flashing Mastic – High Solids Waterproof Roof Sealant for Leaks, Seams, Penetrations & Fasteners – Low VOC, UV Resistant, White, 2 Gallon Pail

$147.29
  • SKU: AWF 9012
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Description

The AWF PRO Silicone Roof Patch & Flashing Mastic is a professional-grade, high solids silicone repair compound designed for sealing, reinforcing, and protecting critical roofing details. This thick, flashing-grade mastic creates a durable, waterproof barrier that helps stop leaks and prevent future water intrusion.

Engineered for long-term performance, this low VOC silicone formulation delivers excellent adhesion to a wide range of roofing substrates including metal, single-ply membranes (TPO, PVC, EPDM), modified bitumen, and built-up roofing systems. Its flexible, high-build consistency allows it to bridge gaps, seal penetrations, and reinforce seams, flashings, curbs, and exposed fasteners.

Built to withstand harsh weather conditions, AWF PRO Silicone Roof Mastic resists ponding water, UV exposure, and temperature fluctuations without cracking or shrinking—making it an ideal solution for both emergency repairs and preventative roof maintenance.

Features & Benefits

  • High Solids, Flashing-Grade Formula: Thick, high-build consistency designed to fill gaps, cracks, and joints while reinforcing vulnerable roof areas.
  • Stops Leaks & Prevents Water Intrusion: Creates a seamless, waterproof seal over problem areas including seams, penetrations, and fasteners.
  • Excellent Adhesion to Multiple Substrates: Bonds to metal, TPO, PVC, EPDM, modified bitumen, BUR, and other common roofing materials.
  • UV & Weather Resistant Performance: Resists sun exposure, ponding water, and extreme temperatures without cracking, shrinking, or degrading.
  • Flexible & Durable: Maintains elasticity over time, allowing movement with the roof and preventing future failures.
  • Low VOC, Contractor-Friendly Formula: Designed for professional use with reduced odor and easier application compliance.
  • Ideal for Repairs & Maintenance: Perfect for extending roof life, handling emergency leaks, and reinforcing high-risk areas.

Technical Data

Product Type Silicone Roof Patch & Flashing Mastic
Base Chemistry High Solids Silicone
Color White
VOC Content Low VOC
Consistency Thick, Non-Sag Mastic
Application Method Brush, Trowel, or Putty Knife
Adhesion Excellent to Most Roofing Substrates
Weather Resistance UV Stable, Ponding Water Resistant
Flexibility High Elongation, Remains Elastic Over Time
Container Size 2 Gallon Pail
Coverage Varies Based on Application Thickness and Repair Area

Recommended Applications

  • Sealing roof leaks and problem areas
  • Reinforcing seams and transitions
  • Flashing repairs around penetrations (vents, pipes, HVAC units)
  • Sealing roof curbs and edges
  • Covering and protecting exposed fasteners
  • Repairing cracks, gaps, and joints
  • Preventative maintenance on commercial and residential roofs

Application Details

Surface Preparation:
Ensure surfaces are clean, dry, and free of dirt, dust, oil, loose materials, and contaminants.

Application:
Apply using a brush, trowel, or putty knife to the desired thickness, fully covering the repair area.

Detail Work:
Use to build up around seams, penetrations, and fasteners to create a reinforced, waterproof seal.

Layering:
May be applied in multiple passes for deeper repairs or high-build applications.

Cure:
Allow sufficient curing time depending on temperature and humidity conditions.

Best Practices:
Ideal for use as part of a complete roof maintenance or restoration system.