Does Flex Seal Work on Asphalt Shingles? [Answered]

Flex Seal is a popular product that claims to provide a quick and easy fix for various household repairs.

One everyday use of Flex Seal is for repairing roof leaks, including asphalt shingles. Homeowners may wonder if this product is effective for fixing their roofing problems.

The answer to whether Flex Seal works on asphalt shingles is not a straightforward yes or no.

While Flex Seal can be used to seal small cracks and holes in roofing, it is not a replacement for professional repairs or proper maintenance.

Flex Seal Liquid Sealer displayed in the store

It is important to understand the product's limitations and use it appropriately to avoid further damage to the roof.

Homeowners should also consider the specific type of asphalt shingles they have before using Flex Seal.

Some types of shingles may be more prone to damage or incompatible with the product.

It is recommended to do research or consult with a professional before attempting any repairs.

Flex Seal and Asphalt Shingles: The Compatibility

Shingles texture - close up view of asphalt roofing shingles

Flex Seal is a popular sealant that is known for its ability to seal, coat, and protect various surfaces.

It can be used on asphalt shingles, but it is important to use it properly to ensure it provides the desired results.

Flex Seal is designed to be flexible, which makes it ideal for use on surfaces that may expand and contract due to temperature changes.

It is important to note that while Flex Seal can be used on asphalt shingles, it is not a permanent solution.

Over time, the sealant may begin to break down or wear away, which could result in the need for additional repairs.

Additionally, if there are underlying issues with the roof, such as structural damage or leaks, these issues must be addressed separately.

Click here to check Flex Seal spray on Amazon.

Application Process

Close up view on asphalt roofing shingles

To apply Flex Seal on asphalt shingles, there are a few steps to follow.

First, thoroughly clean the roof surface to remove dirt, debris, or loose granules.

This will ensure that the Flex Seal adheres appropriately to the shingles. Use a broom or a power washer to clean the surface.

Also read: How To Clean a Metal Roof From the Ground

Next, shake the can of Flex Seal well before use.

Hold the can about 8-12 inches from the surface and spray a light, even coating on the damaged area. Be sure to apply a thin layer, as too much can cause drips or runs.

If using the liquid form of Flex Seal, apply it with a brush or roller. Again, apply a thin layer and allow it to dry completely before applying a second coat if necessary.

Flex Seal can be applied in temperatures ranging from 60-100°F, but it is best to apply it on a dry day with low humidity.

Flex seal available for purchase on a store shelf.

Allow the product to dry for 24-48 hours before exposing it to water or other elements.

It is best used as a temporary fix until a more permanent repair can occur.

Additionally, using Flex Seal on large roof areas is not recommended, as it may not provide adequate protection from the elements.

You can also check out the application process below:

The Ins & Outs Of Flex Seal

Flex Seal is a popular rubberized coating that is used to seal, coat, and protect various surfaces.

It is known for creating a watertight seal that can withstand extreme temperatures, making it a popular choice for repairing leaks and cracks in roofs, gutters, and pipes.

Flex Seal comes in different forms, including liquid, spray, and tape.

The liquid form is applied using a brush or roller, while the spray form uses a canister.

On the other hand, the tape form is a super-strong, waterproof tape that can be used to patch, bond, and seal surfaces.

View of a Flex Seal and Flex Tape endcap inside a hardware store.

One of the key features of Flex Seal is its ability to adhere to almost any surface, including metal, wood, plastic, and concrete.

It is also known for its flexibility, which allows it to expand and contract with the surface it is applied to without cracking or peeling.

However, it is important to note that Flex Seal has its limitations.

It is not recommended for use on surfaces constantly exposed to sunlight, as it can dry out and crack over time.

Additionally, it may not be suitable for use on certain types of roofing materials, such as asphalt shingles.

Asphalt Shingles: A Brief Overview

edge of Roof shingles on top of the house, dark asphalt tiles on the roof background.

Asphalt shingles are a popular roofing material that is used on millions of homes across North America.

They are made from a base of fiberglass or organic material that is coated with asphalt and then covered with ceramic granules.

The granules provide color and texture to the shingles and also help to protect them from the sun's harmful UV rays.

Asphalt shingles come in various styles and colors, including 3-tab, dimensional, and interlocking.

3-tab shingles are the most basic and affordable option, while dimensional shingles are thicker and more textured.

Interlocking shingles are designed to snap together, creating a more secure and durable roof.

One of the benefits of asphalt shingles is that they are relatively easy to install and maintain.

They can be installed on most types of roofs, including steep-sloped and low-sloped roofs. However, ensuring the shingles are installed correctly is important to prevent leaks and other issues.

Over time, asphalt shingles can become damaged due to exposure to the elements such as wind, rain, and snow.

They may also become discolored or faded due to exposure to the sun. In some cases, it may be necessary to replace damaged or worn shingles to maintain the integrity of the roof.

Also read: Metal Roof vs. Shingles in Florida [& Other Hot Climates]

Alternatives to Flex Seal

While Flex Seal is a popular choice for sealing leaks on various surfaces, including roofs, it may not be the best option for everyone.

Here are a few alternatives to consider:

1. Roofing Tar

A man is spreading roofing tar onto an asphalt shingles roof.

Roofing tar is a black, tar-like substance used to seal roof leaks. It is typically applied with a trowel or brush and can take several hours to dry.

Roofing tar can be messy and difficult to work with, so it may not be the best option for those who are not experienced with roofing repairs.

2. Roofing Cement

roof cement

Roofing cement is a black, tar-like substance that can be used to seal leaks on asphalt shingles.

It is easy to apply and dries quickly, making it a good choice for small repairs. However, it may not be suitable for larger leaks or extensive damage.

3. Roofing Tape

Roofing Tape

Roofing tape is a self-adhesive, waterproof tape that can be used to seal leaks on asphalt shingles and other surfaces.

It is a quick and easy way to make small repairs, but it may not be suitable for large or complex leaks.

How Long Can I Expect Flex Seal Spray to Last on My Roof?

Flex Seal can last on the roof for up to 20 years, depending on your climate and maintenance.

The adhesive is reliable and lasts longer because of the durable silicone materials and properties used in producing it.

However, it is important to note that this time frame is an estimate and may vary based on several factors.

One of the most significant factors that can affect the longevity of Flex Seal on your roof is the climate in your area.

Also read: What is the Best Roof Coating for a Metal Roof? Unmasking the Top Coat to Weather All Storms

Extreme weather conditions, such as heavy rain, snow, or high winds, can cause the sealant to deteriorate over time.

Therefore, it is essential to ensure the sealant is applied correctly and maintained properly to extend its lifetime.

Another factor affecting Flex Seal's longevity is your roof's condition. If your roof is old and damaged, the sealant may not be as effective, and leaks may reoccur.

Angled view of a Flex Seal display inside a Lowe's store.

Final Thoughts: Navigating Your Roofing Solutions

Flex Seal offers a convenient and quick solution for minor roofing issues, but it's paramount to recognize its limitations.

While it's a handy tool for DIY enthusiasts, it should never substitute for more extensive, professional roof repairs.

Roofing is an integral part of any structure, and ensuring its robustness is key to the safety and durability of your home.

Therefore, even if you choose to use products like Flex Seal, regular check-ups by roofing professionals are essential.

Their expertise can help identify and fix problems that might not be visible to the untrained eye.

Leave a Reply

Your email address will not be published. Required fields are marked *