Sealing a Flat roof

How To Seal Your Flat or Low Slope Roof

Sealing a Flat roof

How To Seal Your Flat or Low Slope Roof

Time to Complete 48 hours
Difficulty Level Beginner
Products Needed 2-3

Ultimate flat roof protection

You have a leak or your roof is getting old and worn out which needs attention.  You know you need to do something but not sure where to start.

Take a breath, relax and know that you’re in the right place to learn about your options.

On this page you’ll learn about the different types of roofs, what are the most common problems and the steps to fix your roof.

There are videos, images, steps and application guides to show you the way.

5 Year Warranty

If your product fails, peels or cracks, we’ll replace your failed product.

Real Customers sealing their Roofs

Huge Savings!
I wanted to find a way to do preventative maintenance on the flat portion of roof on my home and after talking to support, I was confident I could do this myself. I am pleased with the results and even happier with all the money I saved by doing it myself!
Easy to use
After building a new shed, I wanted to make sure it lasted for years to come. After seeing that Liquid Rubber Color Sealant is UV stable, and reflects heat to keep it cooler inside, I was sold! It's been years, and I am as happy as I was from day one.
Huge Savings!
I wanted to find a way to do preventative maintenance on the flat portion of roof on my home and after talking to support, I was confident I could do this myself. I am pleased with the results and even happier with all the money I saved by doing it myself!
Easy to use
After building a new shed, I wanted to make sure it lasted for years to come. After seeing that Liquid Rubber Color Sealant is UV stable, and reflects heat to keep it cooler inside, I was sold! It's been years, and I am as happy as I was from day one.
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Real Customers sealing their Roofs

Huge Savings!
I wanted to find a way to do preventative maintenance on the flat portion of roof on my home and after talking to support, I was confident I could do this myself. I am pleased with the results and even happier with all the money I saved by doing it myself!
Easy to use
After building a new shed, I wanted to make sure it lasted for years to come. After seeing that Liquid Rubber Color Sealant is UV stable, and reflects heat to keep it cooler inside, I was sold! It's been years, and I am as happy as I was from day one.
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Build Your Flat/Low Slope Roof Kit

Choose your options and press calculate

What Roof Coating do you want?

Silicone Roof Coating - Premium coating where you can apply the final coverage in 1 coat. Comes in White. Average lifespan before recoating is 10 -15 years

Waterproof Sealant - Only comes in Black. Average lifespan before recoating is 5 - 10 years.

Color Sealant - Similar to the Waterproof Sealant but comes in different colors. Average lifespan before recoating is 5 - 10 years.

Silicone Roof Coating - Premium coating where you can apply the final coverage in 1 coat. Comes in White. Average lifespan before recoating is 10 -15 years

Waterproof Sealant - Only comes in Black. Average lifespan before recoating is 5 - 10 years.

Color Sealant - Similar to the Waterproof Sealant but comes in different colors. Average lifespan before recoating is 5 - 10 years.

Choose Roof Type

If you're unsure about the type of roof you have, please refer to the Flat & Low Slope Roofs Application Guideline.

If you're unsure about the type of roof you have, please refer to the Flat & Low Slope Roofs Application Guideline.

How many linear feet of seams, joints, vents do you need to bridge with Seam Tape or Geo-Textile?

Liquid Rubber Seam Tape and Geo-Textile reinforce seams, joints, vents… that are prone to leaking. 

Seam Tape - Peel and stick option, quick application and ready to be top coated.

Geo-Textile - Fabric embedded into the coating using the 3 course method. 

Feet

Liquid Rubber Seam Tape and Geo-Textile reinforce seams, joints, vents… that are prone to leaking. 

Seam Tape - Peel and stick option, quick application and ready to be top coated.

Geo-Textile - Fabric embedded into the coating using the 3 course method. 

How many linear feet of seams, joints, voids… between 1/8”- 1/2” do you need to fill with Sealant & Adhesive Caulking?

Liquid Rubber Sealant & Adhesive Caulking is used to fill voids larger than 1/8” - 1/2” (up to 1/2” deep) before being bridged with Seam Tape or Geo-Textile.

Feet

Liquid Rubber Sealant & Adhesive Caulking is used to fill voids larger than 1/8” - 1/2” (up to 1/2” deep) before being bridged with Seam Tape or Geo-Textile.

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Calculate Your Project Size

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Choose Products

Find your Roof products below and add to cart!

Silicone Roof Coating

Silicone Roof Coating

Premium roof coating that you can apply in 1 coat to achieve your final thickness.
RV Roof Smart Cleaner

RV Roof Smart Cleaner

Non-Toxic - Clean your roof without killing your grass or polluting the sewers.
 Promotes better adhesion of coatings.
EPDM & TPO Primer

EPDM & TPO Primer

Using the correct Primer promotes adhesion and extends the life of your roof coating. Click on "Change Primer" for more details.
Multipurpose Primer

Multipurpose Primer

Promotes better adhesion and reduces peeling and flaking.
Concrete Etch

Concrete Etch

Cleans and opens concrete pores to promote better adhesion. Easier to use than an acid etch product.
Seam Tape

Seam Tape

Used to bridge across larger areas and protect areas prone to leaking/movement.
 Excellent adhesion.
Geo-Textile

Geo-Textile

Reinforces seams, joints, vents. Embedded into the coating using the 3 course method. Similar to doing a drywall joint.
Sealant & Adhesive Caulk

Sealant & Adhesive Caulk

Can be used as an adhesive, sealant and crack filler. Will not shrink back when curing.
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Silicone Roof Coating

How To Seal a flat roof

Questions about Sealing a Flat Roof

  • Primer is not commonly needed for these types of roofs.

  • Yes, you must remove all loose, flaking paint and then rough sand the well adhered paint before cleaning.

  • You can use a brush or 10mm (3/8") nap roller or push broom.

    It is also possible to be sprayed with airless, heavy industrial spray units capable of spraying a bitumen coating (e.g. Graco GH833), however, most homeowners will not have access to this equipment. 

  • US - Delivered in 3-5 business days
    CAN - Delivered in 3-7 business days
    UK - Delivered in 2-3 business days

  • By signing up and creating an account HERE, you will receive 10% off your first purchase. You will need to check your email and verify it by clicking the link.

Need some help?

Our team of experts are standing by to help make sure your project is a success. 

Why Liquid Rubber?

  • Over 1 Million Gallons Sold

  • 5 Year Warranty

  • Free Returns

  • Free Shipping Over $49.95