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Flex Paste

What Is Flex Paste?

Flex Paste is a super thick rubberized paste that clings to the surface and instantly fills large gaps, cracks, and holes. Once dry, Flex Paste turns into a strong, flexible, watertight, rubberized coating that seals out air, water, and moisture on a

Is it Important to Read ALL the Directions Before Using/Opening My Flex Paste?

YES…to understand the best way to apply, use and preserve your Flex Paste, it’s important to READ ALL DIRECTIONS before use.

What Projects Can I Use Flex Paste For?

Flex Paste is perfect for DIY, handyman projects, arts & crafts, hobbies and so much more! Use it to repair your roof, winterize your home, plumbing repairs, to seal cracks, automotive or marine repairs, pool and spa repairs, and so much more.

Can I Use Flex Paste as a Sealant?

YES, it is an excellent waterproof sealant. Flex Paste can be used on windows, doors, vents, thresholds and so much more. It will create a watertight barrier that seals out air and moisture. Use Flex Paste to help prevent flood damage. It can even be

What Surfaces Can I Use Flex Paste On?

You can use Flex Paste on a wide variety of surfaces such as wood, glass, tile, concrete, aluminum, metal, brick, stucco, masonry, copper, fabric, fiberglass, ceramic, porcelain, natural stones, roofing, PVC, EIFS, EPDM, CSPE, Hypalon polyurethanes, a

Can I Use Flex Paste on a Wet Surface or Underwater?

YES, Flex Paste can be applied on dry or wet surfaces and even underwater. It won’t dissolve or wash away and even dries underwater. For best results apply a generous amount to the surface using firm pressure. This will help push the water out and al

Is Flex Paste Chemical, UV, and Mildew Resistant?

YES, once fully cured, Flex Paste is UV, mildew, and chemical resistant.

Will Flex Paste Shrink?

NO, Flex Paste will not shrink, crack, or peel.

How Do I Apply Flex Paste?

Use a putty knife, trowel, or similar tools to remove a smooth even layer of material from the top of the tub. Scooping deeply into the tub may cause air pockets which can dry the Flex Paste. Apply a generous amount using a smooth sweeping motion. (S

In What Temperatures Can I Apply Flex Paste?

Flex Paste can be applied in a wide range of temperatures from 0°F – 150ۜ°F. Once applied and fully cured it can withstand a wider range of temperatures from -40°F – 200°F.

Can I Smooth or Tool It Once It Has Been Applied?

Depending on temperature, humidity or the thickness of the layer, Flex Paste can be tooled within 15-30 minutes of the initial application. It will dry to the touch in approximately 2 hours and fully cure in 24 to 48 hours. Flex Paste gets stronger o

How Long Should I Wait to Apply a Second Coat of Flex Paste?

Allow 24 hours to cure before applying additional coats if needed.

How Long Does It Take to Fully Cure?

Depending on the thickness of the layer the product needs 24 – 48 hours to fully cure. Temperature and humidity levels will also impact the curing process. Humid environments will cure the product faster than dry environments. If the treated area is

Once Cured, Does Flex Paste Remain Flexible?

YES, Flex Paste dries into a strong, flexible rubber that expands and contracts with the surfaces to which it’s adhered.

How Long Does Flex Paste Last?

With proper application, care and maintenance, Flex Paste will last for years.

Can Flex Paste Be Painted?

YES, once fully cured, it can be painted any color.

Can Flex Paste be Sanded?

Unlike spackle or joint compound, Flex Paste dries to a waterproof, flexible rubber. Therefore, sanding may not be the best option once Flex Paste has cured. Instead of sanding we recommend using a putty knife, trowel, or similar tool to smooth over

Does It Have an Odor?

Flex Paste has a slight mild odor during application, but it dissipates as it cures.

Can I Dilute Flex Paste?

NO, Flex Paste is a ready to use product. Do not dilute with solvents or water.

How Do I Remove Flex Paste?

Do not use water to clean Flex Paste. Before it cures, Flex Paste can be cleaned with a dry cloth. If necessary, most residues can be removed with acetone or mineral spirits. Application tools may also be cleaned with a dry cloth and with acetone or

Is Flex Paste Food Grade/Food Safe?

Flex Paste has not been approved for use around foods.

Can I Use This on Drinking Water, Rain Barrels, Fish Tanks, etc.?

Flex Paste has not been tested for safe use on potable water sources or around plants and animals.

How Do I Preserve Flex Paste?

Flex Paste begins to cure once exposed to air, moisture and humidity. To slow the curing process, keep the product covered with the lid during use. Secure the lid and store in a cool dry place when done. If your packaging has a protective foil on the

I Lost My Protective Foil. What Should I Do?

Cut a piece of heavy-duty aluminum foil larger than the opening of the Flex Paste container by a ½ inch all the way around. Use it in place of the protective foil after each use.

What is the Recommended Storage Temperature for Flex Paste?

Store Flex Paste in temperatures from 60°F to 100°F.

How Much Coverage does One Can of Flex Paste Provide?

One pound of Flex Paste provides about 10 linear ft at 2 inches wide with a layer thickness of approx. 1/16th inch.

In What Sizes and Colors Can I Purchase Flex Paste?

Flex Paste is offered in black, white, or clear and available in the following sizes:. 9oz cartridge (caulking gun required). 1 lb. container. 3 lb. container. 12 lb. MAX container

What is the Maximum Pressure Flex Paste can Withstand?

There are a variety of factors that can impact the maximum pressure Flex Paste can withstand. Depending on the thickness of the layer applied, the surface type it’s being applied to, the size of the crack or hole to be sealed, Flex Paste will withsta

Can I Use This to Repair a Gasoline Tank?

We do not recommend the use of Flex Paste to seal a gasoline tank or any other flammable liquid containers.

Can Flex Paste be Used with Electrical Wires?

Flex Paste has not been tested for this application and has no UL rating.