Flex Seal 14 oz Gray Spray-On Sealant, 2-Pack – Waterproof Coating for Gutters, Roofs, and More

Fast, colorful protection for leaks and weather

Meet a fast, colorful solution for sealing leaks and protecting surfaces. Flex Seal gray spray-on sealant comes in a convenient 14 oz can and is sold as a 2-pack, offering coverage for multiple projects around the home, workshop, or RV. The gray shade blends with many surfaces, giving a neat, professional look while you tackle damp corners, rooftop seams, or outdoor decor.

How it works

The spray seeps into cracks and holes to form a flexible, rubberized layer as it cures. Once dry, it becomes a watertight coating that can move with substrate expansion without cracking. The formula is designed for long-lasting resilience against seasonal moisture and sun exposure.

• Seeps into cracks and holes, creating a durable seal that resists future weathering.
• Dries to a flexible, rubberized coating that remains pliable over time.
• Ideal for gutters, wood, roofs, skylights, windows, and a wide range of outdoor items.
• Popular for arts, crafts, and DIY projects that need reliable water resistance.

Real-life uses and benefits

From a leaky gutter seam to a damp RV roof, a single spray can quickly transform a problem area into a shielded surface. Homeowners and hobbyists appreciate the visual finish and the ease of application, which reduces the need for messy repairs or frequent re-coats. Consider Flex Seal as a flexible layer that can protect seasonal decor and outdoor furniture from moisture and mildew.

• Gutters: helps seal seams and prevent future drips during rains.
• Wood and exterior surfaces: provides a barrier against moisture while preserving a natural look.
• RVs, campers, and roofs: helps block leaks around vents and edges without rigid coatings.
• Skylights and windows: offers a rapid seal for edges and fast weatherproofing.
• Outdoor decor: extends the life of statues, planters, and ornaments in damp climates.

Tips for best results

• Prepare the surface by cleaning and fully drying the area before application.
• Shake the can well and apply in a steady, sweeping motion from about 6–8 inches away for even coverage.
• Use multiple thin coats rather than a single thick layer, allowing dry time between passes.
• Apply in a well-ventilated area and allow the coating to cure completely for optimal performance.

With Flex Seal, you get a versatile, fast-acting solution that can help you manage moisture and protect surfaces without heavy tools or downtime. Each 14 oz gray can delivers a flexible, weather-ready finish, and the 2-pack ensures you have backup for additional projects around the home or workshop.