20 Best Sealant For Flat Roof (2023 Updated)

Gardner 100% Silicone Flat Roof Coat-N-Seal is formulated specifically to restore and waterproof worn roof surfaces. Ideal for commercial or residential flat or low slope roof surfaces. Great choice for built up roofs, concrete roofs, parapet walls, foam, RV’s, rubber, mobile homes, EPDM and TPO roofs.

Easy and fast to apply, plus delivers superior waterproofing protection that will provide a permanent seal for the life of the roof. The rubberized finish expands and contracts to resist cracking and reduces thermal shock.

UV inhibitors reflect and keep surfaces cooler which allows the roof to ultimately last longer. This fast set moisture-cure product delivers superior waterproofing and sealing and is well suited to be used in hot or cold climates.

Roof sealant for rooftop fixtures brush grade – paintable voc compliant clear size=quart coverage sq. 6 feet Will not turn brittle in sun or cold. Offers elasticity to move with the roof and strong adhesion to resist pulling away from substrate.

Sticks to wet or dry surfaces including galvanized or aluminum flashing, vents, downspouts, copper or aluminum roofing, PVC or ABS vent pipe, neoprene or plastic pipe flashing, brick, block, mortar, concrete, fiber cement board, acrylic or polycarbonate skylight plastics, asphalt, wood, steel, paint, etc.

Waterproof, repels water immediately after application and for yea rs. UV resistant. Lasts longer than asphalt roof sealants. Low tack, 30-minute skin time, 1-week cure time. 1/8 inches thick spread.

Paintable with latex paint in 24 hours, or oil-based paint within 1 week.

Will not turn brittle in sun or cold. Offers elasticity to move with the roof and strong adhesion to resist pulling away from substrate. Sticks to wet or dry surfaces including galvanized or aluminum flashing, vents, downspouts, copper or aluminum roofing, PVC or ABS vent pipe, neoprene or plastic pipe flashing, brick, block, mortar, concrete, fiber cement board, acrylic or polycarbonate skylight plastics, asphalt, wood, steel, paint, etc.

Waterproof, repels water immediately after application and for years. UV resistant. Lasts longer than asphalt roof sealants. Low tack, 30-minute skin time, 1-week cure time. 1/8″ thick spread. Paintable with latex paint in 24 hours, or oil-based paint within 1 week.

Black Jack 100% Silicone Roof Coating is formulated to deliver superior waterproofing protection to your roof surface. This rubberized coating, forms a chemical bond to the roof surface which provides incredible adhesion and long term waterproofing protection.

This product will also withstand areas that pond water, and will hold up in areas where other coatings will fail. The coating dries to a bright white finish, which keeps roof surfaces cooler and has excellent UV resistance.

Finally, this high solids formula is quick setting, low odor and can be applied in a wide range of temperatures. – Size: 5 Gallon – Color: White – Ideal for flat roofs – Best waterproof coating – High solids formula – Withstands ponding water – Rain safe in 60 minutes.

– Preparation:All surfaces should be clean. Treat rust with proper primer. If mildew is present, surfaces should be cleaned with a proper bleach solution (one part bleach to 2 parts water).

Liquid Nails Roof Repair Black Sealant is a tough, flexible sealant that stops leaks fast around chimneys, flashings, roof decks, vents and many other roof areas. It is ideal for waterproofing, repairing and sealing roofs.

This sealant works in all weather conditions, providing a waterproof bond even on damp or wet surfaces. This tough, flexible roof sealant won’t freeze and will prevent ice and water damage.

Rust-Oleum 710 Elastomeric Roof Coating provides energy efficient, long-term durability and excellent resistance to weathering and dirt pick-up on metal roofs, concrete, weathered single ply roofing and smooth surface built-up and modified bitumen systems.

Long lasting weatherproofing protection and resists cracking down to -10 degrees Fahrenheit. Water-based coating features Cool Roof Technology which offers 80% reflectivity for energy efficiency. 2 coats recommended for durable protection; dries to the touch in 6 hours and recoat after 24 hours.

Waterproof seal within 6 hours. Formulated to meet and/or exceed the standards established in ASTM D 6083.

Premium SBS modified compound for sealing roof leaks on wet surfaces. Seal leaks and openings around flashings, chimneys, vents, skylights, joints in metal edging, and gutters, etc. Patches holes, cracks, and splits on composition, mineral surface cape sheet, metal, and masonry roofs even in a driving rain or under water.

May be used in wet, dry, warm or cold weather. Made from heavy-bodied asphalt. Covers 12. 5 sq ft. per gallon applied at a thickness of 1/8″.

Fix your RV roof leak with RV Flex 100% Silicone Roof Sealant Coating. Use to restore, rejuvenate and repair your entire RV Roof. Our RV Roof Sealant is the best solution to completely overhaul your RV, Camper or Trailer roof, you will never have to worry about your RV roof again with our lifetime guarantee.

GacoRoof 100% Silicone Roof Coating creates a seamless membrane to seal and repair existing roofs and permanently protect against leaks, permanent ponding water, and the damaging effects of severe weather.

1 to 12 Hr. cure time, dry to the touch. Bonds to asphalt, composite, concrete, fiberglass, metal, and most existing coatings on flat or sloped roofs. UV resistant. Ideal for use on flat and sloped roofs including, but not limited to, large and small buildings, homes, garages and patio covers, sheds and barns, mobile homes, RVs and more.

Henry 887 Tropi-Cool 100% Silicone White Roof Coating is a premium, 100% silicone, moisture-cure coating designed to reflect the sun’s heat and UV rays as well as protect many types of roofs. Now with Dirt Pick-Up Resistance (DPR) Technology, it will keep your roof whiter and brighter longer.

While suitable for use in all climates, the 100% silicone chemistry is especially suited for extreme tropical environments, which are exposed to some of the hottest and wettest weather with intense UV exposure.

It is specially designed to maintain maximum reflectivity of heat and UV rays as it ages. Its moisture-cure chemistry creates a very aggressive chemical bond with the roof, which allows for permanent ponding water resistance, extreme durability, and superior capabilities of sealing and protection.

Lanco Ultra Siliconizer is a 100% acrylic elastomeric roof sealer that has been silicone-modified to provide a thick high-performance water and weather resistant seal on most roof surfaces. It will significantly lower the interior temperature of the structure.

Product will not crack, peel or blister, even under severe weather conditions.

Top quality asphalt-based sealant forms a long-lasting watertight seal. Excellent weathering and adhesive qualities for sealing roof flashings spotting shingles repairing minor roof leaks. Resists sagging and cracking.

Through the Roof is the clear ultra-elastic sealant made to permanently stop and prevent roof leaks. It effectively seals around a variety of roof fixtures without the messy look of asphalt. Plus Through the Roof! won’t dry hard and crack like traditional asphalt repair products and lasts 20 times longer! It expands and contracts with temperature changes leaving you with a repair that sticks but won’t stick out.

Conforms to ASTM C794.

is the clear, ultra-elastic sealant made to permanently stop and prevent roof leaks. It effectively seals around a variety of roof fixtures without the messy look of asphalt. wont dry hard and crack like traditional asphalt repair products, and lasts 20 times longer! It expands and contracts with temperature changes, leaving you with a repair that sticks but wont stick out.

Conforms to ASTM C794.

Lanco White-Seal is a 1-component, high performance rubberized, elastomeric roof sealer. When applied as directed, it will provide a waterproof and weatherproof seal and will not crack, crumble or peel despite exposure to severe weather or total joint movement.

This sealer reflects sunrays and reduces inside temperatures for increased energy savings. Use this sealer for waterproofing and protecting a wide assortment of approved roofing systems and/or substrates that are structurally sound such as conventional bituminous built-up roofs, concrete, metal, aged galvanized metal, bonded tar and gravel and asphalt shingles.

Do not use on rubber roofs (EPDM) or polyurethane foam.

Henry 587 Durabrite white elastomeric roof coating is a premium, high-solids formula offering better weather protection, solar reflectivity and longevity than economy-grade reflective roof coatings. The cured coating forms a permeable membrane that prevents liquid infiltration but allows moisture vapor to vent or breathe out of underlying substrate.

As an ENERGY STAR partner, Henry has determined that this product meets the ENERGY STAR guidelines for energy efficiency.

Siliconizer Roof Coating is a thick, rubberized, high performance and silicone-modified elastomeric roof coating. When applied as directed, it will provide a waterproof and weatherproof coating, adhering tightly to any of the suggested surfaces and it will not crack or peel despite exposure to severe weather or wind-driven rain.

The elastomeric heat-reflective formulation will protect from sun-rays and also reduce inside temperatures.

Rust-Oleum Elastomeric Roof Patch is a white, acrylic elastomeric roof sealant intended for application to metal, asphalt, modified bitumen and most single-ply roofs. The highly flexible, rubber-like elasticity accommodates wide swings in temperature and significant building movement.

Rust-Oleum Elastomeric Roof Patch is UV stable and may be used to repair roofs and seal metal roof fasteners. Patches seams and splits and seals roof fasteners. Use on metal, asphalt, MB, and most single-ply roofs.

Ideal for sealing metal roofs and for application under elastomeric roof coatings. It is not allowed to send these products via air mode of transportation. Only surface mode of transportation is enabled for them.

18268 Condition: New Brand: DapMpn: 18268Type: Silicon Caulk

Advanced waterproofing technology, reduces heat-build up. Professional grade product forms a thick, rubberized shield that expands and contracts to prevent cracking and roof damage. Provides a highly protective barrier which reflects the suns UV rays.

Covers approximately 50-75 sq. ft. per gallon per coat. Meets Energy Star performance ratings.