Flex Paste

Extra thick rubberized paste.

10,000+ five star reviews*
Size: 9 oz Cartridge
Color: White


Starts out as a thick paste and dries to a strong, flexible rubber coating. Won’t shrink or wash away and can be painted any colour. It can be applied on dry or wet surfaces, even underwater. Available in white and black. In Tubs and Cartridges.

• Fix cracks and holes

• Foundation and concrete repair

• Seal out rodents and pests

• Bath and shower repair

• Indoor and outdoor projects

• Roof repair

• RV and motorhome repair

• Auto repairs and boat repairs

• Lawn and garden projects and much more

Works on:

Wood, glass, tile, concrete, aluminum, metal, brick, stucco, masonry, copper, fabric, fibreglass, ceramic, porcelain, natural stones, roofing, PVC, EIFS, EPDM, CSPE, Hypalon polyurethanes and much more.

For complete instructions go to: How To Use Flex Paste

Read entire label for directions and warnings before use.

Protective clothing & eyewear are recommended. Do not shake or stir product. Surface must be free of grease, oil & dirt.

For Flex Paste in the original (plastic) container

Remove silica gel packet and slowly lift protective foil from the surface. Do not discard foil or silica gel packet!

After each use, press the foil onto the center of the remaining material and continue pressing outward so the foil remains in contact with the material. As foil reaches the edge of the tub, press around the inside perimeter, keeping the excess foil up. Replace silica gel packet and secure the lid tightly.

For Flex Paste in the original stay-fresh container

Remove lid. Place lid on top between applications. Secure Lid after project completion.

Once opened, product will begin to cure. To slow the curing process, keep product covered (with lid) during use. Secure the lid and store in a cool dry place when done.


• Using putty knife, trowel or similar tool, remove an even layer from the top surface.

• Do not scoop deeply into the tub as this may create air pockets.

• Apply a generous amount to the surface using a smooth motion.

• Etching the surface will increase adhesion.

• Sanding is not recommended – instead, smooth to desired finish or add designs to create unique artistic textures.

• Always make sure all cracks & holes have been completely filled & cured before testing.


Use a cloth with mineral spirits or acetone to clean your tools and work area. Do not use water.

Before reuse, remove any dried material that may have formed on the inside perimeter of the tub or on the surface. Store in a humidity-controlled environment.