FAQs | Official Site – Flex Seal® Family Of Products
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FAQs 2019-08-27T11:49:34-04:00

FLEX GLUE FAQs

Q: Can Flex Glue be used underwater?
A: Yes, you can apply Flex Glue underwater and it will even cure underwater.

Q: Can it be used as a sealant?
A: Flex Glue is an excellent sealant. It can fill large voids and is great for applications with uneven surfaces.

Q: Can Flex Glue be painted?
A: Yes, once fully cured, it can be painted.

Q: What is the difference between Flex Glue in the squeeze tube vs. the Pro Formula Cartridge?
A: All sizes have amazing instant grab technology and our Pro Formula has even more instant grab.

Q: Is Flex Glue resistant to mold and mildew?
A: Yes, it is.

Q: Is Flex Glue UV resistant?
A: Yes, it is.

Q: Can it be used on porous surfaces?
A: Yes, Flex Glue is designed to be super thick. It bonds to porous substrates such as brick, concrete, mortar and so much more.

Q: Can I smooth or tool it once it has been applied?
A: Yes, Flex Glue can be tooled or re-positioned within 10 minutes of initial application. It will dry to the touch in 1 hour.

Q: How long does it take for the product to fully cure?
A: Flex Glue fully cures in 24 – 48 hours and reaches a maximum strength in seven days.

Q: In what temperatures can Flex Glue be applied?
A: For easy application, we recommend applying it in temperatures between 0°F – 150°F.

Q: What temperatures can Flex Glue withstand?
A: Once applied, it can withstand a wide range of temperatures from -40°F up to 200°F.

Q: How do I clean up after using Flex Glue before it cures?
A: Before it cures, Flex Glue can be cleaned with a dry cloth. If necessary, most residues can be removed with isopropyl alcohol.

Q: Can I remove Flex Glue once it’s dry?
A: Once dried, Flex Glue can be removed with sharp tools similar to a chisel. However, it may not be possible to separate bonded materials without damaging the surfaces.

Q: Can I use it on drinking water, rain barrels, fish tanks etc.?
A: Flex Glue has not been tested on potable water sources.

Q: How many linear feet can I get out from a tube of Flex Glue?
A: Depending on the thickness of the bead, Flex Glue will provide the following:

MINI 0.75 oz. (white): up to 3.75 linear feet
4 oz. squeeze tube (clear): up to 20 linear feet
6 oz. squeeze tube (white): up to 30 linear feet
9 oz. Pro Formula (clear): up to 45 linear feet
10 oz. Pro Formula (white): up to 50 linear feet

Q: Will Flex Glue Clear retain its clarity once fully cured?
A: Yes, it dries to a crystal-clear bond.

Q: Will Flex Glue shrink during the curing process?
A: Flex Glue will not shrink, crack or peel.

FLEX TAPE FAQ’s

Q: What temperature should I apply it?
A: Flex Tape can be applied in a wide range of temperatures, from 20° F to 120° F.

Q: Can I paint over it?
A: Most paints will not adhere to Flex Tape. However, Flex Seal aerosol may be used as a primer to transform the appearance of surfaces where Flex Tape has been applied.

Q: I’m trying to adhere it to fabric, but it’s not sticking. Is there anything I can do to prep the surface?
A: Flex Tape can be heated with a standard hair dryer to help the adhesive bond with the fabric. Also, continued firm pressure and time will help increase adhesion. Some customers have found it helpful to first prep a fabric surface with Flex Seal aerosol, let it dry, and then apply Flex Tape.

Q: Can I use it on my radiator hose?
A: No. We do not recommend using Flex Tape on radiator hoses.

Q: Can I use it on a tank used to hold gas or oil?
A: No. We do not recommend using Flex Tape on a gas or oil tank.

Q: Can I use it to repair a car or bicycle tire?
A: No. We do not recommend using Flex Tape to repair tires due to the extreme pressure.

Q: Can I use it on a container that holds water for drinking?
A: It has not been tested on potable drinking water.

Q: What is the maximum pressure it can withstand?
A: The maximum pressure Flex Tape can withstand will vary based on the substrate and the conditions under which it is applied. It’s always best to test a small area first.

Q: If I’m using it to patch an above ground pool, is it best to apply it to the inside or the outside of the pool?
A: Both! Flex Tape forms a super strong bond with itself, so if you’re patching a pool it’s best to first apply Flex Tape to the interior side of the pool wall and then place a second piece of Flex Tape to the exterior. Remember to cut your Flex Tape larger than the area of the leak. You do not need to drain the pool prior to applying it. Flex Tape is a temporary, emergency repair and is not meant to be a permanent fix.

Q: Can I use it to repair an air mattress or inflatable?
A: Flex Tape can be used as a temporary, emergency repair to an air mattress or inflatable. However, it may not bond with all materials. Always test before use.

FLEX SEAL LIQUID FAQ’s

Q: How much will one can of it cover?
A: Coverage will vary depending on the number of coats used and what type of surface you are applying Flex Seal Liquid onto. However, our available sizes typically cover the following area:

1 Large 16oz – up to 18.75 sq. ft.,
1 Jumbo 32oz – up to 37.5 sq. ft.,
1 Giant Gallon – up to 150 sq. ft.

Q: What is the shelf life of FLEX SEAL LIQUID?
A: Flex Seal Liquid has a shelf life of 24 months when properly stored. If the can remains open for an extended period of time a skin may form on the surface. In order to avoid skinning over, remove the lid, use immediately and always replace the lid after each use. If skinning does occur, remove the top layer and use product.

Q: Is it safe to use around plants and animals?
A: Yes, Flex Seal Liquid is safe around plants and animals (once fully cured).

Q: Will it expand and contract in the summer and winter?
A: Yes, Flex Seal Liquid stretches, stays flexible, expands and contracts.

Q: Can I use it on the inside of my rainwater barrel?
A: Yes, Flex Seal Liquid is safe on rain barrels (once fully cured).

 Q: How much pressure will it withstand?
A: The maximum pressure Flex Seal Liquid can withstand will vary based on the surface and the conditions under which it is applied. It’s always best to test a small area first.

Q: What temperatures will it withstand?
A: Flex Seal Liquid has a wide temperature range from -80 to 350 degrees Fahrenheit. For best results, we recommend applying it to surfaces and substrates in temperatures between 32 and 120 degrees Fahrenheit.

Q: Can I dilute it?
A: Flex Seal Liquid is ready to use and should be used right out of the can. Do not dilute it with solvents or water.

Q: How do I clean it up?
A: You can clean up excess or spilled product with a dry cloth or paper towel and mineral spirits (BEFORE the liquid begins to cure). DO NOT USE water or alcohol-based solvents.

Q: Can I apply it on a wet surface or when it’s raining?
A: It’s always best to apply Flex Seal Liquid on a clean, dry surface free of grease and oil. If applied during heavy rain, some of the product may wash away. Therefore, we recommend applying it 24 hours prior to any heavy rain, hail or snowfall (if possible).

Q: Can I use it to repair a gasoline tank?
A: We do not recommend using Flex Seal Liquid to seal a gasoline tank or any other flammable liquids.

Q: Can I paint it?
A: We do not recommend painting over Flex Seal Liquid.

FLEX SEAL FAQ’s

Q: How long does it take to dry?
A: Dry time depends on the temperature, humidity, and thickness of the coating. Flex Seal will usually dry to the touch within 2 to 3 hours and fully cure in 24 hours. It will get stronger over time.

Q: How much will one can of it cover?
A: Depending on the number of coats and thickness, one 14 oz. can will cover up to 12 sq. ft. and one MINI 2 oz. can will cover up to 2 sq. ft.

Q: How much pressure will it withstand?
A: Flex Seal will withstand normal hydrostatic water pressure such as rainwater, but it is not made to withstand extreme pressure.

Q: Can I apply it on a wet surface?
A: Flex Seal can be applied on a wet surface, or moist environment in the event of an emergency. However, it will always adhere better to a clean, dry surface. To ensure its longevity, we recommend you reapply Flex Seal once the area is completely dry.

Q: How long will it last?
A: Depending on the environment, coats added, and maintenance, many people have found Flex Seal will last for years without cracking, peeling or losing any of its strength or sealing properties.

Q: Can I paint it on or brush it on instead of spraying?
A: Yes, you can spray the Flex Seal directly into a bowl and paint it, brush it or roll it on any area. However, we recommend using Flex Seal Liquid for these types of applications.

Q: Can I use it to seal the inside of a water tank used for drinking?
A: No, we do not recommend that you use Flex Seal on surfaces where it comes in direct contact with drinking water.

Q: Can I use it to fix radiators, tires or other areas with extreme heat and pressure?
A: No, Flex Seal is not made to withstand extreme heat or pressure.

Q: Can I use it on a gasoline tank?
A: No, Flex Seal should not be used to seal a gasoline tank, oil tank or any other flammable material.

Q: Is Flex Seal associated with GAF?
A: No, it is not affiliated with GAF and is not intended for use by Professional Roofers.

Q: Is Flex Seal Clear the same formula as Flex Seal Original and Brite?
A: In order to give Flex Seal Clear its amazing transparency, we had to make some adjustments to our formula. Therefore, the spray will be slightly thinner and multiple coats may be required to get the job done.

FLEX SHOT FAQ’s

Q: Can I apply it to a wet surface?
A: It’s best to apply Flex Shot to a clean, dry surface. Still, Flex Shot can be applied to a wet surface, but just not in standing water.

Q: Can I use it in an enclosed space?
A: Yes, but it is recommended that Flex Shot be used in a well-ventilated area.

Q: Will it fade, dry, crack, yellow or deteriorate because of contact with household cleaners?
A: No, Flex Shot will not fade, dry, crack, yellow or deteriorate due to contact with household cleaners.

Q: How long does it last?
A: Flex Shot will last up to 30 years and will not fade, dry, crack, yellow or deteriorate.

Q: How many linear feet can I get out of one can of Flex Shot?
A: One can will cover up to forty (40) linear feet, depending on the thickness of the bead.

Q: Can I use it on a container that holds water for drinking?
A: Flex Shot has not been tested for use on potable water systems.

Q: Can I use it to fix tires or other areas with extreme pressure?
A: Flex Shot is not recommended for use in extreme pressure.

Q: Are the extension tubes reusable?
A: Yes, extension tubes are reusable. After using Flex Shot with the extension tube, you can leave the extension tube affixed to the can of Flex Shot.

Q: Can the extension tubes be cut to adjust the thickness of the bead?
A: Yes, the extension tubes can be cut to any size in order to produce the desired bead thickness.

Q: How do I remove the extension tube that’s attached to my can of Flex Shot?
A: The extension tube screws on to the top of the Flex Shot can and is removed by unscrewing it in a counterclockwise direction. Do NOT attempt to remove the extension tube by pulling or yanking it off.

FLEX TAPE REMOVER FAQ’s

Q: How do I use Flex Tape Remover?
A: FLEX TAPE ADHESIVE REMOVER DIRECTIONS:

  • Always use protective gloves and goggles.
  • Lift one edge of the Flex Tape and spray directly underneath backing onto adhesive.
  • Use pliers to help grab and pull up Flex Tape.
  • Spray directly on adhesive as you pull Flex Tape from the surface.
  • Once Flex Tape has been removed, spray directly on any excess adhesive residue, let stand 10 seconds and wipe with clean cloth. Repeat until the area is free of adhesive.
  • A stiff brush may help to remove residue.

Q: How do I clean up after using Flex Tape Remover?
A: Once Flex Tape has been removed spray directly on any excess adhesive residue, let stand 10 seconds and wipe with clean cloth. repeat until the area is free of adhesive.

Q: How much Flex Tape will one can of Flex Taper Remover remove?
A: Depending on the surface, 2-5 square feet of tape.

Q: Will Flex Tape Remover work to remove Flex Tape from any surface or substrate?
A: Yes, but Flex Tape Remover should be tested first. Flex Tape Remover may not be compatible with certain plastics, types of vinyl, paints, and rubbers.

Q: How should Flex Tape Remover be stored?
A: In a cool dry location and should never be exposed to temperatures in excess of 120 degrees F.

Q: What is the shelf life of Flex Tape Remover?
A: 2 years

Q: Will Flex Tape Remover damage the surface to which the Flex Tape has adhered?
A: Flex Tape Remover may not be compatible with certain plastics, types of vinyl, paints, and rubbers.

Q: Will Flex Tape Remover cause a surface to crack, peel, fade or yellow?
A: When applied properly, Flex Tape remover will not cause surfaces to crack, peel, fade or yellow.  Flex Tape Remover may not be compatible with some plastics, types of vinyl, paints or rubbers. If allowed to sit on the surface too long, it could penetrate other top coats under the tape (if they exist).  Please follow all can directions.

Q: Can Flex Tape Remover be used to remove adhesives other than Flex Tape?
A: YES. To remove tape, labels, adhesives, glue, tar, bugs, decals, graffiti, grease, oil, lipstick, crayon, tree sap, gum, hard rubber scuff marks, water stains and so much more! Spray directly on the stain and wipe clean.

Q: Is Flex Tape Remover safe to use around plants and animals?
A: No.

Q: Can I use Flex Tape Remover on drinking water, rain barrels, fish tanks, etc.?
A: No.

Q: Is Flex Tape Remover toxic if ingested?
A: Harmful if swallowed. Please read all directions and precautions printed on the label.