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Fast Navigation Rapid Overview1. Flex Seal Liquid Giant (Gallon Size)2. Flex Seal Spray3. Flex ShotPopular Ways to Use Flex SealBuyer"s GuideHow to Rerelocate Flex SealWright here to Buy?Does Flex Seal Work on Concrete?How Long Does it Take for Flex Seal to Dry?What Will Flex Seal Adright here To?How Much Pressure Will It Withstand?

Flex seal is a liquid rubber that comes in an aerosol spray can or gallon container which expels the liquid rubber to fix holes, cracks to seal out water or store in the air simply by spraying, pouring, brushing or rolling the liquid rubber on via the roller. It doesn’t sag or reason dripping in the time of the warm summer months, and also it’s non-toxic. The rubber will remain pliable and also functional for many years. We’ve written out a testimonial of pros and cons to aid you make the ideal option.

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Rapid Overview

Flex Seal BlackFlex Seal WhiteFlex ShotFlex SprayFlex Tap
Prevents rust and also corrosion. Mildew and also chemical resistantPrevents rust and also corrosion. Mildew and also chemical resistantDoesn’t shrink or crack vs conventional caulkingQuickly seal cracks, gutters and also other tiny leaks fastInstantly stop leaky pipes, hose leaks.

1 Gallon
1 Gallon80z10 oz1 roll
Covers up to 100 square ft.Covers approximately 100 square ft.Up to 50 ft.Up to 25 square ft.4″ x 5′
Dry Time: 2-3hrsDry Time: 2-3hrsDry Time: 20 min.Dry Time: 2-3hrsInstant Seal
Pour, brush, or use a paint rollerPour, brush, or usage a paint rollerPush nozzle to fill cracks, tile, fixturesAccepts 15-Gauge nails 1″ as much as 2-1/2″Accepts 15-Gauge nails 1-1/4″ approximately 2-1/2″
(Editors Choice)

Ratings: 4.4

Ratings: 4.3Ratings: 4.0(Great Value)

Ratings: 4.1

Ratings: 4.5

1. Flex Seal Liquid Giant (Gallon Size)

Liquid rubber in a deserve to will certainly speak leaks fast. It will protect your surencounters from corrosion, and also you deserve to usage it on dry or wet surencounters. It will not peel or crack from the harsh winter seasons. It is incredibly flexible as it starts as a thick liquid that you’re able to roll, dip, brush, or pour on surencounters and also then it magically turns right into a sturdy, flexible rubber. Here are some pros and also cons.


Easy to use: Pour, Brush or roll on with rollerNon-toxic, basic to useSweeps right into cracks & holes seals out water effortlesslyMade to last for years a will remain flexible and also pliableWon’t sag or reason dripping in summer warmth, and also will not crack or peel in winter cold seasonStops leaks fast in their tracks

The smell is solid be certain to usage in ventilated rooms

Top Questions & Answers

Q – Can the flex seal solve asphalt cracks?

A – Yes!

Q – What nap works best once using a roller to apply the liquid rubber?

A – It will certainly depend on the thickness that you’re looking to achieve, as a ¾ inch nap will deliver a beautiful thick coat.

Q – Can this product be used to seal in a canvas awning?

A – Yes!

Q – What is the consistency of the liquid?

A – I would certainly say it’s like a thicker paint.

Q – What colors are tbelow available?

A – White, clear, and also black.

2. Flex Seal Spray

Here is the the majority of common supplied liquid rubber sealant coating that comes in an aerosol spray have the right to. The convenient aerosol spray allows for easy sealant applications without the need of brushes and rollers. Highly resilient to seal leaks and cracks for waterproof and also without sun dripping damages for many kind of years. Here are some pros and also cons.


14 oz. ClearLiquid Rubber In A Can!You deserve to spray on wet or dry surfacesQuickly seals out water, air, and moisturePrevents rust and also corrosionCovers quick and also excellent adhesionUV, mildew and chemical resistantNon-hazardous and Food SafeWill stop noise and also vibrationsExpands and contracts

Product can be messy14 oz Spray is enough for just tiny work the gallon might work-related much better for larger cracks

Top Questions & Answers

Q – Will it hold fabric material together favor a ripped vehicle cover?

A – Test it out on an inconspicuous part to watch if it holds and if it does make specific that the towel doesn’t relocate while the liquid rubber is drying.

Q – Can this be supplied to coat PVC?

A – Yes it can!

Q – Can we use it on a propane gas pipeline?

A – NO. It is not recommfinished.

Q – What colors are available?

A – Clear, white, and babsence.

Q – Can I use this to seal copper water pipes.

A – Yes.

Q – Can I usage it on a bike tire?

A – Due to the intense push from a bike tire, it is not recommended.

3. Flex Shot

Flex shot is the perfect solution for tight spaces – This is portcapacity at its best when you must caulk around your bathtub floorboards and so on. It’s really easy to use and also will soptimal flowing the minute you release downward pressure on the bottle. Here are some pros and also cons.


Works excellent in family applications:Kitchens and also bathsSinks and showersTubs and also tilesWindows and skylightsRoofs and the gutters

MessyAwful smell – usage in ventilate spaces

Top Questions & Answers

Q – Will it come with an expansion tube?

A – No, just the lengthy nozzle equivalent to the ones on caulking guns.

Q – Will it work on a radiator leak in my car?

A – Don’t usage on surdeals with via exceptionally high temperatures as this product is great up to 350°

Q – Can I usage it to repair a crack on a plastic humidifier?

A – Yes. Drain the water out and clear the surchallenge then apply the liquid rubber and also permit it to totally dry before including water.

Q – Could I paint over the Flex Seal?

A – No. You can’t be painted over.

Q – What colors are offered in the Flex Shot?

A – White and also clear. The bigger commodities of Flex Seal come in babsence, white, and also clear.

Popular Ways to Use Flex Seal

Repairing leaks and cracks to foundations and basementsFixing pool liners and fish pondsGreat on flashings and chimneysRVs and campersWater and also Rain barrelsGutters and roofsToolsSporting equipmentFountains and bird bathsAuto restoration & more!

Buyer’s Guide

Many concerns neighboring flex seal gain answered in our convenient buyer’s guide section so that you don’t need to scour the internet searching for answers to your inquiries.

How to Remove Flex Seal

Auto Finesse ObliterateTarXSandpaperWD40Acetone

Wbelow to Buy?

Amazon — It’s hard to find much better prices than on Amazon.




Many type of locations that offer As-seen-on-Tv commodities must carry this rubber liquid. The areas above are evidenced areas of sale while their inventory last.

Does Flex Seal Work on Concrete?

Yes, it does. Clean the area of any debris and also use a thin layer and enable it to dry then include one more 2 – 3 coats. Works excellent on concrete and also adheres to every little thing.

How Long Does it Take for Flex Seal to Dry?

Dry time will depfinish on the temperature, humidity, and the thickness of the coating. The Rubber Spray will dry to the touch typically within 2 to 3-hours and in 24-hrs for a complete cure. It will likewise gain a lot more powerful over time.

What Will Flex Seal Adright here To?

It will certainly adbelow to nearly any type of surchallenge such as porcelain, hardwood, steel, tile, concrete, masonry, towel, glass, plastic, aluminum, drywall, vinyl, rubber, cement and also just about any kind of various other wet (it works finest on dry and also clean surdeals with even though it have the right to be supplied on wet surface) or dry surconfront.

How Much Prescertain Will It Withstand?

It can handle normal rainwater and water press yet anypoint intense it will not job-related against like addressing bike tires, the air pressure is also high.

How to Use Flex Seal?

When using the aerosol spray make sure that you shake the deserve to well then spray the liquid rubber right into tiny holes, cracks, or fill in leaks via a distance of 14″ from your confront. Apply thin layers at a time to allow the liquid to dry totally in between applications for ultimate results. Keep the aerosol spray in temperatures that are above 60°. Once you’re finished using the spray invert the deserve to to obtain a quick burst so that the nozzle is clear.

When using and also storing the Gallon the rules still use as they perform to the aerosol spray such as keeping stored in rooms above 60° and also not to use on high warmth surfaces surpassing 350° and to apply thin layers to permit for much better outcomes. You have the right to apply this liquid with a roller, brush or dip.

My Final Thoughts:

This is an remarkable product for repairing cracks, leaks, and filling in holes and also functions excellent for a bathroom caulk. It will last for a long time to seal in moisture. Leaking gutters destroying your vehicle rooftops can’t fight against this effective liquid that dries into a rubber. There are so many kind of means to gain the product wbelow others have failed such as auto restoration, fish ponds, and pool liners. Basements and foundations through the list continuing on.

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The just worries we see are that you can’t use it to repair tires because of the high push and you can’t usage it on high-temperature surfaces that exceed 350°. The other thing is the terrible smell, but if something will certainly conserve you countless dollars in repairs somepoint that smells foul while it dries is alideal in our book however execute be certain to use this product in a ventilated location. Usually we detest commodities found on infomercials providing you the moon and also the stars, but this time probably tright here is some promise. We hope we assisted you decide on whether or not this product is best for your next household tasks and if there’s something you want us to include to this evaluation about your individual experience, drop us a line.