Review for Flex Seal Liquid Rubber in a Can – Pro and Cons

When it comes to fixing things around your house, you want the products you use to be professional, but still easy to use. Nobody wants a pricey product that would turn out to be useless or toxic to the environment. We are also aware that everything around your home, from the garden to the roof, is so important that you are willing to research a little before purchasing any product that can damage it.

However, this research can become something really stressful and time-consuming when you have to go through hundreds of customers’ comments and reviews. Not to mention that many of them can be irrelevant for you or even misguiding.

This may happen to some of you even when you had to decide whether to buy the Flex Seal Liquid Rubber in a Can or not. It is indeed difficult to figure out what is your best option when you have so many points of view where you can choose. So, our team decided to gather all 248 customers’ comments and the almost 300 answered questions regarding this product and to create this meaningful review for our readers. Therefore the article will dig into the benefits of the product and it will also reflect its drawbacks, in the interest of readers that are shopping for the best roof sealant for your roof.

Benefits of the Flex Seal Liquid

The Flex Seal Liquid Rubber in a Can is very easy to use. Simply pour it out, brush or roll it onto your roof, and let it dry. This roof sealant is also non-toxic. It seeps into cracks and holes, allowing it to seal out water. Being both flexible and pliable, this roof sealant is designed to last for years. It will not sag or drip in the summer heat, nor will it crack or peel in the winter cold. Once cured, the Flex Seal Liquid forms a durable, breathable, weatherproof barrier that is resistant to rain, snow, sun, wind, hail, air, moisture, UV degradation, extreme temperatures, and natural weathering.

So, here are the top benefits that we constantly came across when going through the customers’ comments:

• Easy to use
• Non-toxic
• Seals out water
• Lasts for years
• Won’t sag in the summer heat, nor crack in the winter cold

Where You Can Use the Flex Seal Liquid

When you want to purchase the flex seal liquid the key aspect you have to consider is its final purpose. Where do you want to use it and for what purpose? It is essential to know exactly the things it can properly fix. To give you a genuine response to these questions, we prepared a range of answers for actual customers and users of the product.

Great Results When Used on Roofs

The feedback left for The Flex Seal Liquid Rubber in a Can was overwhelmingly positive. People who need roofing materials for fixing their roofs had a lot of good things to say.

Here is one of those comments: “I had a flat roof redone with heavy asphalt/gravel sheeting. A year later I wasn’t happy with the joints where the sheets met, and the gray paint that had been applied was cracking along one area. I had no evidence of leaking, but the joint heat seals just didn’t look like they wouldn’t eventually peel up. (Won’t use that contractor again!) So I used Flex Seal on all the joints and over the cracked areas, and it worked beautifully. The Flex-Seal really does create a rubberized surface, and it is holding nicely. Btw, the liquid in the can is much heavier than the spray can is. I used a bristle brush to apply.”

Works Great on Pools

If you have a pool that springs a leak, you may want to try The Flex Seal Liquid Rubber in a Can to fix it. People who had pools found the product genuine successfully when trying to fix their pool leaks.

A customer recounted their experience by saying: “The pool of a water fountain had cracked and corroded from winter freezing. It would retain water for about three days and the leak was difficult to locate. The floor of the pool was vacuumed and all debris removed after which the flex seal was poured in. The self-leveling liquid-filled all imperfections while an old stiff-bristled paintbrush was used to apply a flex seal to the vertical walls. After 24 hours the pool was filled with water and there were no leaks. Four months later, the flex seal has remained secure and the fountain pool leak free.”

Good for Sidewalks

As the Flex Seal remains flexible, it has advantages over hard curing sealants.

A customer who used it on his driveway explained: “If the price is no concern, I like it for driveway cracks and any other exterior weather protection that needs to bridge gaps, flex (duh), and self-seal cuts/punctures. For me, latex concrete repair caulk is always shrunk/hardened/cracked. I used a roofing nail to punch a hole right above the bottom rim of the can, I put an air hole in the lid, and I could fill tiny cracks in concrete. First I put a little crushed rock in larger gaps.

I put the nail back in the hole to stop it. I used half a gallon for more than 30 feet of crack. I suggest a piece of stiff wire or small brush to smooth/spread it and adhere it to the surface, eliminating pockets. Also with a brush, I sealed a critical piece of wood structure where I would have attempted to use house wrap or tarpaper in the past.”

Great for Outdoor Flooring

Some people commented that they had great results when using The Flex Seal Liquid Rubber in a Can for outdoor flooring.

A customer explained: “We have so far used (including black and clear liquids) it on blacktop, concrete, and painted wood, each time with astounding results. We are currently covering our concrete patio with 3 coats of liquid grey to be then sprinkled with grey, white, brown, and black latex chips (to simulate the appearance of granite) to be then covered with three coats of clear FlexSeal.

The idea is to mimic a process used to cover a garage floor using epoxy resin, latex chips, and polyurethane. Thus far the grey applications are resolving according to plan. Each coat was even cleaned with a power washer to remove accumulated debris in between coats. Power washing has had no impact upon the FS coatings.”

Good for Metal Bottomed Hot Tubs – Makes the Surface Non-Slippery

One of our friends has personally used this product on the flooring of a dog therapy pool that he made. Because the pool was made from an 8-foot diameter metal stock tank, it was slippery to walk on.

He applied The Flex Seal Liquid Rubber in a Can to the bottom of the pool and then let it cure for several days before adding water. Also, he made this pool in the coldest part of winter in subzero temperatures in his unheated garage, but with the help of a heat lamp directed at the pool bottom, it cured just fine. The Flex Seal Liquid Rubber in a Can made the bottom of the pool not slippery at all for when his dog needed to use the heated therapy pool. Finally, this product created a perfect non-slippery surface for his pet!

Drawbacks of the Flex Seal Liquid Rubber in a Can

Pricey

Yes, The Flex Seal Liquid Rubber in a Can can be expensive. If you have to use it over a large surface it may not be considered affordable for everyone. But, keep in mind that it does do the trick! So, if you just change the perspective you see the issue, purchasing the product should be way less expensive than having to buy and install a whole new roof.

A customer said: “Worked great did the job, in all honesty overpriced.”

Needs Several Days to Cure

Make sure to let the Flex Seal Liquid Rubber in a Can for several days to completely cure. That means you should not allow any water on it for those amount of days. If you are going to be using it on a roof, watch your weather forecast to make sure rain is not in the forecast for at least 3 days from when you apply it. However, in a sunny area, it will cure faster than if it is in a dark and cool area.

Either way, make sure that it cures or you will need to take off what you put on and reapply it.

A customer shared: “The product ‘skinned’ over in less than an hour, and took about 2-3 days to completely cure; my application was about 2 inches deep on average. After cure, the product seems very tough and durable, with good adhesion to the sides of the crack. We’ll see how long it lasts to keep moisture and weeds out.”

Common Questions About the Flex Seal Liquid Rubber in a Can

Here are some top questions that we’re constantly asked by possible future customers when they were deciding whether to buy or not this product:

• How easy is the clean-up?

Unfortunately, the clean-up can be a little messy. You will need to wash the roof sealant off of your brush which can take a while.

• Can I paint the roof sealant once it is dry?

Yes, you can paint it after it is dry.

• Can I use the Flex Liquid on concrete?

Yes, many customers who bought this roof sealant used it on concrete. For best results, sweep off the concrete to make sure there is no concrete dust and then apply. Let it dry for 24 to 48 hours. It is recommended to not apply this to a high-traffic location.

Final Thoughts

All in all, it may appear that this product is a must in every man’s workshop. The Flex Seal Liquid Rubber in a Can is made to brush or roll onto your roof, and then let dry, and also it is non-toxic. It easily seeps into cracks and holes, allowing it to seal out water.

Moreover, this roof sealant is designed to last for years because it is flexible and pliable. It will not sag or drip in the summer heat, nor will it crack or peel in the winter cold. Once cured, the Flex Seal Liquid forms a durable, breathable, weatherproof barrier that is resistant to rain, snow, sun, wind, hail, air, moisture, UV degradation, extreme temperatures, and natural weathering. In addition to using this product on roofs, customers also found that it worked great on pools, driveways, and outdoor flooring. It may be rather expensive, but it is a good product that works just fine for a lot of house issues.

Pros

• Works great on a variety of surfaces
• Flexible. Will not crack
•  Seeps easily into cracks

Cons

•  High price
• Takes several days to cure
•  Can be messy when applying

Related Article: Best Roof Sealant to Fit Your Needs