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20 Best Sealant For Flat Roof (2023 Updated)

Sealant for flat roof is a material that is used to seal the joints and gaps in a flat roof. This sealant can be made of different materials, such as asphalt, rubber, or even metal. The sealant helps to prevent water from leaking through the joints and gaps in the roof.

20 Best Sealant For Flat Roof

Product Image Product Name Features Price

Sashco 1 Quart Through The Roof Sealant

  • 1 Qt

1-Quart Clear Through The Roof Sealant

  • 1 Quart

Black Jack Eterna-Kote 100% Silicone Roof Coating – White / 5 Gallon

  • 5 gal

Liquid Nails 10.3 oz. Roof Repair

  • Seals roof leaks in all weather
  • Extended outdoor durability
  • Weatherproof waterproof roof adhesive

Rust-Oleum 301994 Elastomeric Roof Coating, White, 5 Gallon

  • 5 Gal. 10-Year

Henry Rubber Modified Wet Patch Roof Cement, Black – 0.9 gal can

  • 0.9 Gal

RV Flex Repair Camper & Trailer Silicone Roof Sealant Coating 5 Gallon / White

  • 5 Gallon

GacoRoof Silicone Roof Coating 5 Gallon White

  • Brand: Heng’s
  • Part Number: HGR1600-5
  • Gaco Silicone Bass Coat Off-Wht

Henry Tropi-Cool White Silicone Roof Coating 4.75 Gal

  • Brand Name: Henry
  • Sub Brand: Tropi-Cool
  • Color: White

Lanco 5 gal. Ultra Siliconizer Reflective Roof Coating

  • Ultra white finish helps reflect sun’s heat
  • Water and weather resistant seal on most surfaces
  • Keeps interiors cooler, helping reduce energy cost

Dap Roof Sealant – 10.1 oz tube

  • 1-Pack

Through The Roof! 14025 Sealant, 10.5 oz Cartridge, Clear

  • 10.5 Ounce

Lanco Elastomeric White Seal Roof Coating Acrylic Sealer Waterproof Cool 5 Gallon

  • Ultra white finish helps reflect sun’s heat
  • Water and weather resistant seal on most surfaces
  • Keeps interiors cooler, helping reduce energy cost

Henry 587 White Roof Coating – 4.75 gal can

  • The product is 5gal white roof coating
  • Easy and simple use kit
  • The product is manufactured in china

Rust-Oleum 301898 Elastomeric Sealant,0.9 Gal.,white

  • Color: White
  • Country of Origin: United States of America

Gardner – Gibson SK-7805 Sta-Kool Roof Coating 5 Gallon – White

  • Professional grade
  • Advanced waterproofing technology
  • Expands and contracts up to 350%
Sashco 1 Quart Through The Roof Sealant
  • 1 Qt
1-Quart Clear Through The Roof Sealant
  • 1 Quart
Black Jack Eterna-Kote 100% Silicone Roof Coating – White / 5 Gallon
  • 5 gal
Liquid Nails 10.3 oz. Roof Repair
  • Seals roof leaks in all weather
  • Extended outdoor durability
  • Weatherproof waterproof roof adhesive
Rust-Oleum 301994 Elastomeric Roof Coating, White, 5 Gallon
  • 5 Gal. 10-Year
Henry Rubber Modified Wet Patch Roof Cement, Black – 0.9 gal can
  • 0.9 Gal
RV Flex Repair Camper & Trailer Silicone Roof Sealant Coating 5 Gallon / White
  • 5 Gallon
GacoRoof Silicone Roof Coating 5 Gallon White
  • Brand: Heng’s
  • Part Number: HGR1600-5
  • Gaco Silicone Bass Coat Off-Wht
Henry Tropi-Cool White Silicone Roof Coating 4.75 Gal
  • Brand Name: Henry
  • Sub Brand: Tropi-Cool
  • Color: White
Lanco 5 gal. Ultra Siliconizer Reflective Roof Coating
  • Ultra white finish helps reflect sun’s heat
  • Water and weather resistant seal on most surfaces
  • Keeps interiors cooler, helping reduce energy cost
Dap Roof Sealant – 10.1 oz tube
  • 1-Pack
Through The Roof! 14025 Sealant, 10.5 oz Cartridge, Clear
  • 10.5 Ounce
Lanco Elastomeric White Seal Roof Coating Acrylic Sealer Waterproof Cool 5 Gallon
  • Ultra white finish helps reflect sun’s heat
  • Water and weather resistant seal on most surfaces
  • Keeps interiors cooler, helping reduce energy cost
Henry 587 White Roof Coating – 4.75 gal can
  • The product is 5gal white roof coating
  • Easy and simple use kit
  • The product is manufactured in china
Rust-Oleum 301898 Elastomeric Sealant,0.9 Gal.,white
  • Color: White
  • Country of Origin: United States of America
Gardner – Gibson SK-7805 Sta-Kool Roof Coating 5 Gallon – White
  • Professional grade
  • Advanced waterproofing technology
  • Expands and contracts up to 350%

1. Gardner 5 gal. Flat Roof Coat-n-Seal Liquid Rubber Coating

Gardner 5 gal. Flat Roof Coat-n-Seal Liquid Rubber Coating

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Amazon.com – Seller
Home Depot

Product Details

Specifications

Details
Coating Base Silicone
Approximate Coverage Per Gallon (sq. ft) 70
Cold Applied Cold Applied
Number per Package 1
Package size (gallons) 5 gal

Reviews From Real Customers

Mauricio
Rick

2. Sashco 1 Quart Through The Roof Sealant

Sashco 1 Quart Through The Roof Sealant

  • 1 Qt

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Amazon.com – Seller
eBay – baby-i-love-u
Valu Home Centers
Max Warehouse

Product Details

Specifications

Details
Sheen Clear
Color Clear
Coating Material Elastomeric
Product Type Roof Sealant
Water Based No

3. 1-Quart Clear Through The Roof Sealant

1-Quart Clear Through The Roof Sealant

  • 1 Quart

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Amazon.com
Walmart
Paint Supply
McGuckin Hardware

Product Details

Specifications

Details
Product Type Sealant
Size Quart
Color Clear
Product Weight 2.0800 lb
Dimensions L x W x H (in.) 8.5000 x 12.7500 x 5.0000 in

4. Black Jack Eterna-Kote 100% Silicone Roof Coating – White / 5 Gallon

Black Jack Eterna-Kote 100% Silicone Roof Coating - White / 5 Gallon

  • 5 gal

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Amazon.com – Seller
eBay
Walmart
Valu Home Centers

Product Details

Specifications

Details
Sheen Gloss
Coating Material Silicone
Container Size 5 gal.
Transparency Solid
Coverage Area 250 sq. ft.

Reviews From Real Customers

Martin Craig
Seth
Rodney Cox

5. Liquid Nails 10.3 oz. Roof Repair

Liquid Nails 10.3 oz. Roof Repair

  • Seals roof leaks in all weather
  • Extended outdoor durability
  • Weatherproof waterproof roof adhesive
  • Ideal for waterproofing repairing and sealing roofs
  • Works on wet roofs

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Amazon.com
eBay
Walmart
Tractor Supply Company

Product Details

Specifications

Details
Coverage Area 30 linear ft
Color Black
Application Temperature 32 – 100 degree Fahrenheit
Product Type Caulk Sealant
Indoor or Outdoor Outdoor

Reviews From Real Customers

ehumejr

6. Rust-Oleum 301994 Elastomeric Roof Coating, White, 5 Gallon

Rust-Oleum 301994 Elastomeric Roof Coating, White, 5 Gallon

  • 5 Gal. 10-Year

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Sold By Price
Amazon.com – Seller
eBay – zorotools
Valu Home Centers
Farm & Home Hardware

Product Details

Specifications

Details
Color White
Container Size 4.75 gal
Application Method Brush, Roller, Spray
Finish Unfinished
Dry Time 6 hr.

Reviews From Real Customers

doowop1942rich

7. Henry Rubber Modified Wet Patch Roof Cement, Black – 0.9 gal can

Henry Rubber Modified Wet Patch Roof Cement, Black - 0.9 gal can

  • 0.9 Gal

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Amazon.com – Seller
eBay
Walmart
Home Depot

Product Details

Specifications

Details
Base Type Oil
Reflective No
Roof Application Roof Leak Repair
Resin Type Asphalt
Roof Item Type Sealant

Reviews From Real Customers

jetp_5278
Kyla
Curt

8. RV Flex Repair Camper & Trailer Silicone Roof Sealant Coating 5 Gallon / White

RV Flex Repair Camper & Trailer Silicone Roof Sealant Coating 5 Gallon / White

  • 5 Gallon

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Amazon.com – Seller
eBay
RV Flex Repair

Product Details

Specifications

Details
Package Dimensions 14 x 12 x 12 inches

9. GacoRoof Silicone Roof Coating 5 Gallon White

GacoRoof Silicone Roof Coating 5 Gallon White

  • Brand: Heng’s
  • Part Number: HGR1600-5
  • Gaco Silicone Bass Coat Off-Wht

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Sold By Price
Amazon
eBay
eCoatingStore.com
Paint Supply

Product Details

Specifications

Details
Color White
Coating Material Silicone
Product Type Roof Coating
Durability 50 Years
Transparency Solid
Fiber Reinforced No
Water Based No
VOC Level 250 g/L
Cold Application Yes
Container Size 5 gal
Coverage Area 500 sq ft
Brand Name GacoFlex

10. Henry Tropi-Cool White Silicone Roof Coating 4.75 Gal

Henry Tropi-Cool White Silicone Roof Coating 4.75 Gal

  • Brand Name: Henry
  • Sub Brand: Tropi-Cool
  • Color: White
  • Coating Material: Silicone
  • Product Type: Roof Coating

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Amazon
eBay
Walmart
Home Depot

Product Details

Specifications

Details
Color White
Coating Material Silicone
Product Type Roof Coating
Water Based Yes
Container Size 4.75 gal

Reviews From Real Customers

lahu7678
Jeff Marsh
aerlgreen

11. Lanco 5 gal. Ultra Siliconizer Reflective Roof Coating

Lanco 5 gal. Ultra Siliconizer Reflective Roof Coating

  • Ultra white finish helps reflect sun’s heat
  • Water and weather resistant seal on most surfaces
  • Keeps interiors cooler, helping reduce energy cost

Check Latest Price

Sold By Price
Amazon
eBay
Walmart

Product Details

Reviews From Real Customers

Ty
robertl1572

12. Dap Roof Sealant – 10.1 oz tube

Dap Roof Sealant - 10.1 oz tube

  • 1-Pack

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Amazon
Walmart
Home Depot
Lowe’s

Product Details

Specifications

Details
Sheen Low Luster
Color Black
Coating Material Asphalt
Product Type Roof Sealant
Transparency Solid

13. Through The Roof! 14025 Sealant, 10.5 oz Cartridge, Clear

Through The Roof! 14025 Sealant, 10.5 oz Cartridge, Clear

  • 10.5 Ounce

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Amazon
Walmart
Lowe’s
The BuildClub

Product Details

Specifications

Details
For Use in Kitchens No
Sanded/Unsanded Unsanded
Coverage Area (Linear Foot) 30
For Use on Windows No
Mold Resistant Yes

14. Sashco 14010 Through The Roof! Elastomeric Roof Sealant, 10.5 oz, Clear

Sashco 14010 Through The Roof! Elastomeric Roof Sealant, 10.5 oz, Clear

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Amazon
Life and Home

Product Details

15. Lanco Elastomeric White Seal Roof Coating Acrylic Sealer Waterproof Cool 5 Gallon

Lanco Elastomeric White Seal Roof Coating Acrylic Sealer Waterproof Cool 5 Gallon

  • Ultra white finish helps reflect sun’s heat
  • Water and weather resistant seal on most surfaces
  • Keeps interiors cooler, helping reduce energy cost

Product Details

Specifications

Details
Coating Base Acrylic
Approximate Coverage Per Gallon (sq. ft) 50
Cold Applied Non Cold Applied
Number per Package 1
Package size (gallons) 5 gal

16. Henry 587 White Roof Coating – 4.75 gal can

Henry 587 White Roof Coating - 4.75 gal can

  • The product is 5gal white roof coating
  • Easy and simple use kit
  • The product is manufactured in china

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Sold By Price
Amazon
eBay
Walmart
Home Depot

Product Details

Specifications

Details
Base Type Water
Reflective No
Roof Application Roof Coatings
Resin Type Acrylic
Roof Item Type Coating

Reviews From Real Customers

sourcepage
lakobi15222-77

17. Lanco 5 gal. Siliconizer Elastomeric Sealer Reflective Roof Coating

Lanco 5 gal. Siliconizer Elastomeric Sealer Reflective Roof Coating

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Amazon
Sam’s Club

Product Details

Specifications

Details
Coating Base Acrylic
Approximate Coverage Per Gallon (sq. ft) 50
Cold Applied Cold Applied
Number per Package 1
Package size (gallons) 5 gal

18. Rust-Oleum 301898 Elastomeric Sealant,0.9 Gal.,white

Rust-Oleum 301898 Elastomeric Sealant,0.9 Gal.,white

  • Color: White
  • Country of Origin: United States of America

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Amazon
eBay
Walmart
Max Warehouse

Product Details

Specifications

Details
Color White
Container Size 0.9 gal
Application Method Brush, Trowel
Finish Unfinished
Dry Time 4 to 8 hr.

19. 2~ Low Luster Black Asphalt Coating Roof Sealant Waterproof 10.1 oz. 18268

2~ Low Luster Black Asphalt Coating Roof Sealant Waterproof 10.1 oz. 18268

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Amazon
eBay
eCrater – ms-hardware

Product Details

20. Gardner – Gibson SK-7805 Sta-Kool Roof Coating 5 Gallon – White

Gardner - Gibson SK-7805 Sta-Kool Roof Coating 5 Gallon - White

  • Professional grade
  • Advanced waterproofing technology
  • Expands and contracts up to 350%
  • Best at reducing heat build-up

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Sold By Price
Amazon
eBay
Walmart
Pro Solutions Direct

Product Details

Specifications

Details
Assembled Depth (in) 0 in
Assembled Height (in) 0 in
Assembled Width (in) 0 in
Assembled Weight (lbs) 0 lbs
Item has MSDS (SDS)? Y

Reviews From Real Customers

thotb-trpanc
marciopenta05

Conclusion

The installation of a roof sealant is a great way to help protect your flat roof from the elements. Sealants can help to prevent water damage, as well as provide an extra layer of protection against UV rays and other weather-related damage.

There are a variety of roof sealants on the market, so it is important to choose one that is specifically designed for flat roofs. Once you have selected the right sealant, follow the manufacturer’s instructions carefully to ensure proper application.

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