Professional-Grade Protection
19 Flashing Cement is a scientifically formulated blend of premium asphalts, mineral fibers, and refined solvents. Engineered with a heavy trowel-grade consistency, it creates a durable, elastic waterproof barrier with exceptional adhesion that withstands extreme weather and temperature fluctuations.

Unmatched Performance Features:
✔ All-Surface Adhesion – Bonds securely to masonry, steel, cured concrete, shingles, asphalt roofing & more
✔ Weatherproof & Flexible – Resists cracking in freezing temps and stays intact in high heat without sagging (even on vertical surfaces)
✔ Corrosion & Waterproof – Dries to a tough, flexible coating that blocks leaks permanently
✔ Temperature Resilient – Performs reliably in all climates, from scorching summers to freezing winters

Versatile Applications:
• Permanently repairs leaks in roofs (shingle, metal, asphalt & concrete)
• Seals cracks in chimneys, flues, brickwork & precast concrete slabs
• Waterproofs flashings, downspouts, cornices & wall joints
• Ideal for exposed structures needing long-term protection

Easy to Apply:

• Spreads smoothly with a trowel (sold separately)

• Non-sag formula works on vertical/horizontal surfaces

• Cures to a rugged, weather-ready finish