Because most roofing caulk and sealants specialize in specific areas, it’s a challenge for roofing contractors and roofing businesses to find one with all the best qualities for the job you’re trying to do. You have to do a lot of looking around to find what you want, and even then, it’s unlikely that you’ll find exactly what you’re looking for easily.

To help you make sense of what’s what, we’ve taken the liberty of compiling some of the critical things you should look for when buying a roof sealant and our top five choices for the best roofing sealants right now. So, if you’re looking to learn all the basics about choosing the best roof leak sealants for your roofing company, read on for a comprehensive guide.

Attributes of a Quality Roof Sealant

When it comes to the most desirable qualities in a roof sealer, the keystone ones to look for are water resistance, endurance, ease of application, UV reflectivity, price, and material.

Water Resistance

rain flows down from a roof down

Regardless of the type of roof you intend to use sealant on, water resistance is an essential feature to have because every roof is subject to water at some point. When searching for RV roof sealants, this is the situation. This is particularly true when the roof is located in an area with high annual rainfall.


The durability and longevity set the high-quality sealants apart from the cheaper ones, as more inexpensive sealants tend to flake off and not maintain themselves over a long period of time. You’ll often notice this if a more inexpensive sealant is frequently under duress from harsh conditioners.

Ease of Application

man with caulk gun on roof applying sealant

Most roof sealants are relatively easy to apply. The most important part is to follow the manufacturer’s instructions for proper application. Otherwise, there is a greater chance for the roof sealant to not perform as intended. However, you must consider the differences between tape sealants, paint cans, spray cans, and calk tubes.

UV Reflectivity

Next to water, the sun is one of the biggest threats to a roof and a significant reason why it’s essential to have a quality roof sealant in place. Typically, the sun is not harmful to a roof, but a roof can sustain heavy damage after enough exposure to the sun’s heat. This happens because a roof’s shingles are either made of metal or plastic, both of which suffer under heat.


Typically, you can distinguish roof sealants into different groups depending on the type of material, and each material has its own specialty. Here are a few of the most notable types below.


putting sealant on roof edge with caulk gun

Silicone roof sealants perform well against water damage and sun alike, so if you’re looking for a well-rounded sealant, a silicone roof coating will serve that purpose well. However, the trade-off with silicone roof sealants being versatile is their price. They generally cost more than sealants made from other materials, making them less viable for those who want a budget option.


For reflecting UV rays from the sun, acrylic sealants are the best possible choice. From a cost-performance perspective, acrylic sealants are great because they possess some of the best longevity among roof sealants with UV protection. This material is especially recommended when using asphalt shingles.


Polyurethane sealant

Polyurethane sealants have some resistance to sunlight, though not as much as acrylic sealants. The greatest strength of polyurethane sealants is their high degree of resistance to water. This makes them a popular option for anyone needing a sealant for a roof in an area subject to significant amounts of rain and snow.


Aromatic roof sealants make it significantly more accessible and safer for a person to walk on a roof without slipping or falling because they are highly resistant to friction. It’s on the opposite side of the scale from acrylic sealants when it comes to reflecting UV rays, but if a roof is going to have people walking on it often, aromatic sealants are a great option.

5 Best Roofing Caulk & Sealants

Here are our top five recommendations for a wide range of roofing caulks and sealants, along with brief descriptions for each product.

1. Liquid Rubber Waterproof Sealant

Liquid Rubber Waterproof Sealant

The Liquid Rubber Waterproof Sealant by LR comes in a 5-gallon bucket and is a long-lasting sealer that’s great for applying heavy coats of coverage to surfaces. It works on flat roofs, and sloped roofs, and as an excellent metal roof sealant, making it flexible. The main benefit of this sealant is its protection against water and sunlight. It isn’t the best in either category, but it’s still highly serviceable.

For larger roofs with more surface area, this sealant is a quality choice because of how much comes in the bucket, and even if you don’t need it for a giant roof, the amount of value you get for the price is very worthwhile. As a bonus, the Liquid Rubber Waterproof Sealant is friendly toward the environment for those who are environmentally conscious.

2. Flex Seal Spray Rubber Sealant Coating

Flex Seal Spray Rubber Sealant Coating

Another excellent liquid rubber coating is the Flex Seal Spray Rubber Sealant Coating, which comes in two 14-ounce spray cans. This sealant is extremely easy to apply and provides quick coverage to smaller surface areas. It can easily seep into cracks and holes that are usually tough to reach with something like a brush.

The most significant pro of this sealant is its durability, as it can last in both the extreme summer heat and bitter winter cold without dripping, cracking, or rusting. Many people recommend this sealant if you’re looking for something to handle more minor roofing repairs quickly. It’s not recommendable for use on an entire roof, as the cans do not contain enough sealant.

3. Dicor Self-Leveling Lap Sealant

Dicor Self-Leveling Lap Sealant

The Dicor Self-Leveling Lap Sealant comes in caulk tubes instead of spray cans, which allow for a greater level of control and accuracy in application. This is great for when you need to apply the sealant around the roof edges or air vents without making a mess, which is sometimes one of the few downsides to using spray cans.

The UV stabilization in this sealant helps stop the deterioration and discoloration of certain surfaces, and it’s compatible with any roofing material. Suppose you have any fear of this changing the color of a particular area of a roof like some other sealants. In that case, you won’t have to worry about that being an issue.

4. Gorilla Waterproof Patch & Seal Tape

Gorilla Waterproof Patch & Seal Tape

While tape sealants are not as popular as liquid sealants in spray cans or caulk tubes, tape sealants like Gorilla Waterproof Patch & Seal Tape offer a level of accessibility that you won’t find in other forms of sealers. This particular tape is the ultimate in terms of versatility.

It works underwater, indoors, and outdoors, and has an extra-thick layer of adhesion and UV resistance. Its flexibility also makes it practical for adapting to surfaces to repair holes, gaps, tears, and cracks. The biggest drawback of this sealing tape is that it does not come in large quantities so you may purchase more than one roll depending on your sealing needs.

5. Liquid Rubber-Color Waterproof Sealant

Liquid Rubber Color Waterproof Sealant

The Liquid Rubber Color Waterproof Sealant is very similar to the Liquid Rubber Waterproof Sealant, except it’s specifically a sealant for metal roofs. You can purchase it in 1-gallon or 5-gallon sizes, and application is not demanding regardless of whether you use a sprayer, brush, or roller. The water-based formula also dries quickly into a rubber form, so you don’t have to wait long for results.

This is an ideal sealant for flat and sloped roofs alike, and unlike some other sealants, it’s safe to use on wood and concrete surfaces. While it’s not the most versatile roof sealant, its specialization in metal roofs is a characteristic that makes it a popular choice for many roof sealing jobs.

Start Using Roofing Software

In addition to using quality roofing caulk and sealants, another way to improve your roofing projects is by incorporating roofing software like Service by WorkWave into your workflow. Roofing software can help streamline processes, improve communication with clients and team members, and increase efficiency in project management.

Benefits of using Service by WorkWave

Service by WorkWave offers numerous benefits for roofing businesses looking to effectively manage and attract new customers. Some of the key advantages include:

1. Improved Efficiency: Streamlines operations and helps employees work more efficiently. With features like real-time scheduling, route optimization, and mobile access to important information, employees can complete their tasks more quickly and accurately.

2. Enhanced Communication: Allows for better communication between team members, customers, and management. This leads to fewer misunderstandings, faster response times, and overall improved customer satisfaction.

3. Increased Customer Satisfaction: With improved communication, faster response times, and better service delivery, customers are more likely to be satisfied with your roofing business. This can lead to repeat business, positive reviews, and overall growth.


Now that you know some of the best options for roof sealants, here are a few more general things you should know about roof sealants if you’re considering using them.

1) How often should you seal your roof?

On average, it’s a good idea to seal your roof every five or six years to keep it lasting as long as possible. However, if you notice damage from sunlight, water, or something else, your roof needs a fresh coating.

2) How often should a flat roof be recoated?

It’s best to recoat a flat roof every two to four years because they are more susceptible to wear and tear than sloped roofs. Because flat roofs don’t naturally allow water to flow off them, they need more protection from rainwater.

3) Will roof sealant stop leaks?

Roof sealants may not wholly stop leaks in harsh situations, but they significantly improve the level of protection that your roof has from potential leakages. If you want a roof sealant specifically for stopping leakages, investing in one that excels in that area is worth the effort.

4) How much does a 5-gallon bucket roof coat cover?

A 5-gallon bucket roof coating will cover roughly 250 square feet with two coats and 500 square feet with one coat. For comparison, the average home’s square footage is 3000, but you won’t ever need to use a roof coating to cover every square foot of a roof.

Closing Thoughts

Maintaining your roof with the best caulk and sealants is essential for its longevity and protection against the elements. By using quality products like the ones mentioned in this article, you can ensure that your roof remains in top condition for years to come.

Additionally, partnering with field service software like Service by WorkWave can greatly benefit your roofing and service business. With improved efficiency, enhanced communication, cost savings, and increased customer satisfaction, Service by WorkWave can help your business thrive in the competitive roofing industry. Consider integrating this software into your operations to take advantage of these benefits and stay ahead of the competition. Schedule your free demo today!

Get Started With Service Software!

Manage a variety of field service business tasks while also growing your business. Service by WorkWave is here to help you manage your business all in one place.

Hosam Sayed is a Product Marketing Manager at WorkWave with extensive knowledge of B2B product and marketing positioning. When not in front of his computer, he can be found spending time with his family, enjoying outdoor activities, and working on perfecting the art of landscaping.