10 Best Roof Sealants 2020

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

After analyzing 409 products, scanning 1465 reviews, spending more than 36 hours of research and speaking with our test users, we think the Loctite PL S30 Black Roof and Flashing Sealant 10-Fluid Ounce is the one of the Best Roof Sealant on the market.

# Image Name Brand Price
1
⭐Best Choice
Loctite PL S30 Black Roof and Flashing Sealant 10-Fluid Ounce
Loctite PL S30 Black Roof and Flashing Sealant 10-Fluid Ounce Cartridge (1618181) Check price Loctite $$$$$ Check price
2 Sashco 14004 Gallon Clear Roof Sealant Sashco 14004 Gallon Clear Roof Sealant Check price Sashco $$$$$ Check price
3
💲Best value for the money
HENRY HE208042 Gal Roof Cement
HENRY HE208042 Gal Roof Cement, 0.90 gal (3.41L),Black Check price Henry $$$$$ Check price
4 Liquid Rubber Waterproof Sealant Liquid Rubber Waterproof Sealant - Indoor & Outdoor Coating - Easy to Apply - Water Based - Original Black, 5 Gallon Check price N/A $$$$$ Check price
5 Heng's Rubber Roof Coating Heng's Rubber Roof Coating - 1 Gallon Check price Heng's $$$$$ Check price
6
👑Premium Pick
Rexoseal RV Roof Restoration Kit for RV's up to 40'
Rexoseal RV Roof Restoration Kit for RV's up to 40' Long - Waterproofing and Protective RV Roof Coating Sealant - White, 5 Gallons Check price N/A $$$$$ Check price
7 Dicor 501LSW-1 Self-Leveling Lap Sealant Dicor 501LSW-1 Self-Leveling Lap Sealant, 4 Pack Check price Dicor $$$$$ Check price
8 Sashco 14025-1 Through The Roof 10.5 oz Cartrdiges Sashco 14025-1 Through The Roof 10.5 oz Cartrdiges, Co-Polymer Rubber, Clear Check price Sashco $$$$$ Check price
9 KST COATING KS0063300-20 White Roof Coat KST COATING KS0063300-20 White Roof Coat, 4.75 Gallon Check price Kst Coating $$$$$ Check price
10 GEOCEL GC55103 4500 Roof Bonding Sealant GEOCEL GC55103 4500 Roof Bonding Sealant, 10.1 Ounce Cartridge, Black Check price Geocel $$$$$ Check price

Loctite PL S30 Black Roof and Flashing Sealant 10-Fluid Ounce – Best Overall Roof Sealant

Loctite PL S30 Black Roof and Flashing Sealant 10-Fluid Ounce
  • Country Of Origin: United States
  • Model Number: 1618181
  • Item Package Dimension: 47.63" L x 47.63" W x 287.5" H
  • Item Package Weight: 0.36 lb

Sashco 14004 Gallon Clear Roof Sealant

Sashco 14004 Gallon Clear Roof Sealant
  • Through The Roof! Waterproof Sealant, Brush Grade, 1 Gallon, Clear - 1028325
  • This is highly durable
  • This is manufactured in united states

HENRY HE208042 Gal Roof Cement – Best Budget Roof Sealant

HENRY HE208042 Gal Roof Cement
  • The product is Gallon Roof Cement
  • Elegant design and Finish
  • The product is manufactured in China
  • Package dimensions: 6.5" L x 6.5" W x 8.25" H

Liquid Rubber Waterproof Sealant

Liquid Rubber Waterproof Sealant
  • PROTECTIVE FINISH FOR - Flat roofs, metal roofs, sloped roofs, planter boxes, foundations, sheds, basements, metal, wood, concrete and more
  • HIGHLY FLEXIBLE & DURABLE - Final membrane has over 1000% elongation preventing adhesion failure, and is UV Stable stopping the sun from degrading the product
  • COVERAGE - Vertical Surfaces - 1 gallon/30 sq ft (2.8 sq m). 3-4 heavy coats to achieve a 30 mil (0.76 mm) membrane. Flat/Ponding Surfaces - 1 gallon/15 sq ft (1.4 sq m). 4-5 heavy coats to achieve a 60-80 mil (1.5-2 mm) membrane
  • ENVIRONMENTALLY FRIENDLY - Liquid Rubber Waterproof Sealant/Coating is water based, containing no solvents, VOC's or harmful odors. Safe for humans and pets alike, can be used indoors and outdoors with no special breathing apparatus
  • FOR A BULLETPROOF SYSTEM - Bridge joints, seams, vents, gaps, protrusions…. With Liquid Rubber Seam Tape or Liquid Rubber Geo-Textile where possible movement may occur

Heng's Rubber Roof Coating

Heng's Rubber Roof Coating
  • Designed for use over RV rubber roofs, at seams and tears and to seal vents, air conditioners, etc.
  • It is UV resistant and expands and contracts with roofs
  • Resists cracking and withstands impact, non-polluting and non-toxic
  • Available in gallon size

Rexoseal RV Roof Restoration Kit for RV's up to 40' – Premium Pick

Rexoseal RV Roof Restoration Kit for RV's up to 40'
  • Easy DIY System and Instructional Videos with no special tools or skills required. NO MORE CAULKING NEEDED!
  • Rexoseal has 55-60% More Rubber Content than other Cheaper Coatings. More Rubber Content in Rexoseal Sealants makes for a more Durable and Longer-Lasting Seal.
  • Applies over Rubber (TPO & EPDM), Wood, Metal, Aluminum, and Fiberglass.
  • 10-Year Limited Warranty, but with periodic recoating will last the lifetime of the RV.
  • Kit includes 5 Gallons of Rexoseal RV, 150' of Reinforcing Membrane, a 3" paintbrush, a scrub brush, a pole sander with screen, a 7" brush, a 9.5" paint roller and 8oz of Concentrated Rexoclean Cleaner & Degreaser.

Dicor 501LSW-1 Self-Leveling Lap Sealant

Dicor 501LSW-1 Self-Leveling Lap Sealant
  • Helps create a seal along a roof's edges, around air vents, vent pipes and screw heads
  • Compatible with any roofing material
  • Offers excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal and concrete
  • Improves the ability to continuously seal and remain flexible
  • UV stabilized to prevent deterioration and discoloration, will not stain or discolor any material to which it is applied

Sashco 14025-1 Through The Roof 10.5 oz Cartrdiges

Sashco 14025-1 Through The Roof 10.5 oz Cartrdiges
  • ROOF SEALANT –Adheres to most roof patches to give you a water-tight solution for that difficult jobp your roof leak with a roof repair sealant that adheres to almost anything and keeps water out
  • WATER-TIGHT ROOF REPAIR – Adheres to most roof patches to give you a water-tight solution for that difficult job
  • STOP-LEAK ROOFING SEALANT – The best choice for jobs, out performing a standard silicone sealer and lasting 20 times longer than asphalt
  • STICKS TO WET SURFACES – You can apply Through the ROOF! in the rain and during a leak.
  • WON’T FREEZE – Elastic low-VOC formula flexes with temperature, so you can leave it in your unheated truck or garage

KST COATING KS0063300-20 White Roof Coat

KST COATING KS0063300-20 White Roof Coat
  • The Product Is 4.75Gal White Roof Coat
  • Elegant Design And Smooth Finish
  • The Product Is Manufactured In USA
  • Brand Name: Kst Coating

GEOCEL GC55103 4500 Roof Bonding Sealant

GEOCEL GC55103 4500 Roof Bonding Sealant
  • Lap adhesive and scrim edge sealant
  • Remains flexible
  • Non flammable formulation
  • For use on asphalt shingles, steel, concrete, EPDM, primed TPO, primed PVC, black Hypalon, metal, wood, and other common building substrates
  • Can also be used as a night seal and for core/test cuts

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