Top 6 Best Sealant For Skylights

Leaks can appear anywhere on your roof, gutters, or even around windows, making a flexible and adaptable sealer a must-have for home maintenance. A good leak sealer should be easy to apply, provide a watertight barrier, and last through changing weather conditions.

Flex Seal MAX Clear Spray is a strong choice for homeowners seeking a multi-purpose solution that works on a variety of surfaces and projects. Its clear finish and ability to be painted make it ideal for both functional repairs and discreet fixes. This product is best suited for those who want a reliable, all-around sealer for different leak scenarios.

• Flexible rubberized coating: Forms a watertight, pliable barrier that adapts to cracks and holes
• Paintable clear finish: Can be coated to match any surface for a seamless look
• Weather resistant: Won't sag in heat or crack in cold, ensuring year-round durability

Compared to traditional tar or patch products, Flex Seal MAX prioritizes ease of use and versatility, making it suitable for quick fixes and creative projects alike. Its main tradeoff is that, while highly adaptable, it may not offer the heavy-duty coverage of thicker coatings for large-scale repairs.

Sealing RV skylights often means dealing with future repairs or replacements, so a removable sealant is a practical choice. Persistent leaks can damage interiors and insulation if not addressed with the right product.

Surebond BriRus SB140 is a flexible butyl rubber sealant designed specifically for skylights in RVs. Its easy-to-remove formula makes it ideal for those who anticipate future maintenance or want a less permanent solution.

• Butyl rubber composition ensures flexibility and weather resistance
• Designed for RV skylights for targeted compatibility
• Removable formula simplifies future repairs or upgrades

Compared to more permanent adhesives or hard-setting sealants, this option prioritizes serviceability and flexibility. The tradeoff is that it may not offer the same long-term durability as some heavy-duty alternatives.

Some repairs require a transparent finish to maintain the appearance of the original surface, especially on windows, skylights, or decorative elements. A clear sealer is essential for these situations.

Flex Seal Clear Spray Sealant is a strong pick for users who need a watertight, flexible barrier that dries transparent. It's suitable for both wet and dry surfaces, making it versatile for emergency and planned repairs. This product is best for those who want effective waterproofing without altering the look of their roof or fixtures.

• Transparent rubberized coating: Seals leaks without changing surface appearance
• Usable on wet or dry surfaces: Ideal for urgent repairs
• Protects against corrosion: Extends the life of gutters, wood, and more

Compared to colored sealers, this product prioritizes invisibility and versatility. The tradeoff is that it may require more frequent reapplication on high-wear areas.

RV skylights and roof edges are exposed to harsh weather, making leaks a common concern for travelers and full-time RVers. A robust, all-weather sealant is critical for long-term protection.

Survol’s self-leveling lap sealant is formulated to withstand extreme temperatures and create a durable, waterproof barrier. It’s best for those who need a reliable seal across various materials and want peace of mind in changing climates.

• Self-leveling formula ensures smooth, gap-free coverage
• Wide compatibility with EPDM, TPO, PVC, metals, and more
• Low-odor and non-hazardous for safe indoor/outdoor use

Unlike spray-on sealants, Survol’s lap sealant prioritizes longevity and adaptability for RVs and campers. The main tradeoff is that it requires careful application and is not as quick as spray solutions.

Skylight leaks sometimes need urgent repairs, even in wet or humid conditions. Many sealants require dry surfaces, limiting their usefulness during emergencies or in damp climates.

TYTAN PROFESSIONAL Coat & Seal is a paste sealant that can be applied directly to wet surfaces without a primer. It’s ideal for homeowners or professionals needing a versatile, high-adhesion solution for a variety of materials.

• No primer required for fast, straightforward application
• Works on wet surfaces for emergency or challenging repairs
• UV-resistant and flexible to handle expansion and contraction

Compared to traditional caulks, this product stands out for its ability to bond in less-than-ideal conditions. The tradeoff is that paste application may require more effort to achieve a smooth finish.

When skylight leaks affect a broader area or multiple seams, a liquid sealant that covers large surfaces efficiently is essential. Standard tubes or sprays may not be practical for these jobs.

GORILLA Patch & Seal Liquid Rubber is designed for easy application by brush, roll, or pour, making it suitable for bigger repairs on roofs, skylights, and gutters. It’s a strong choice for those needing to seal extensive gaps or multiple problem spots at once.

• Multiple application methods for flexibility on large surfaces
• Self-leveling formula ensures even, watertight coverage
• Paintable when dry for a finished look

Compared to smaller spray cans or caulk tubes, this product prioritizes coverage and efficiency. The main tradeoff is that it may be less precise for small, targeted repairs.