• LOCTITE® PL Roof & Flash is a premium-grade polyurethane-based sealant designed for roofing and flashing applications, delivering superior weatherproofing, flexibility, and adhesion to common roofing materials.

Loctite PL Roof & Flash

LOCTITE® PL Roof & Flash is a premium-grade polyurethane-based sealant designed for roofing and flashing applications, delivering superior weatherproofing, flexibility, and adhesion to common roofing materials.

Loctite PL Roof & Flash


Professional roof and flashing sealant

  • Formulated for sealing roof joints, flashing, and penetrations

  • Excellent adhesion to asphalt shingles, metal, masonry, and wood

  • Remains flexible to accommodate expansion and contraction

  • Provides long-term waterproofing and weather resistance

  • UV-resistant and suitable for outdoor exposure

  • Ideal for sealing roof edges, vents, skylights, and gutters

  • Paintable after curing for a seamless finish

  • Meets ASTM C920 performance standards



Application:

LOCTITE® PL Roof & Flash is a professional-grade polyurethane sealant specifically developed for roofing and flashing applications. It provides long-lasting waterproof seals, superior flexibility, and reliable adhesion to asphalt shingles, wood, masonry, and metal surfaces.

Performance Features & Benefits:

  • Superior Waterproofing: Creates durable, watertight seals for roofing applications.
  • Flexible & Crack-Resistant: Accommodates thermal expansion and contraction.
  • Strong Adhesion: Bonds to shingles, flashing, masonry, metal, and wood.
  • UV & Weather Resistant: Withstands outdoor conditions and prolonged sun exposure.
  • Paintable Finish: Can be painted after curing to match surrounding surfaces.
  • Durable Performance: Long-lasting seals designed for professional roofing use.

Main Application Areas:

  • Sealing flashing, vents, and skylights
  • Roof edge and gutter sealing
  • Repairing roof penetrations and seams

Specifications & Approvals:

  • Meets ASTM C920, Class 25 for polyurethane sealants
  • VOC compliant for exterior roofing applications

Environmental & Safety Information:

  • Apply in well-ventilated areas and avoid direct skin or eye contact.
  • Dispose of unused product and containers according to local regulations.
  • Safety Data Sheet (SDS) available via inquiry

Technical Specifications:

Property Typical Value Test Method
Base Polyurethane
Color Black
Application Temperature 40°F to 100°F (4°C to 38°C)
Service Temperature -40°F to 160°F (-40°C to 71°C)
Tack-Free Time ~2–4 hours
Full Cure ~7 days (varies with joint depth and humidity)
Movement Capability ±25% ASTM C920
Paintable Yes (after full cure)
UV Resistance Excellent
Water Resistance Waterproof when cured

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