Flex Paste is a thick, waterproof, rubberized paste that dries into a strong, flexible coating, making it perfect for sealing, repairing, and waterproofing various surfaces. It won’t shrink, crack, or wash away, ensuring long-lasting durability. Available in white and black, in tubs and cartridges, it can be applied to dry, wet, and even underwater surfaces.

Key Features

Super Thick & Durable – Forms a strong rubber coating that remains flexible.
Waterproof & Weatherproof – Seals out moisture, air, and water for lasting protection.
No Shrinking or Cracking – Expands and contracts with temperature changes.
Paintable – Can be painted over in any color for a custom finish.
Indoor & Outdoor Use – Ideal for homes, vehicles, boats, and more.
Easy Application – Simply apply with a putty knife, trowel, or similar tool.

Uses & Applications

✔ Fix Cracks & Holes – Seals gaps in various surfaces.
✔ Foundation & Concrete Repair – Strengthens weak or damaged structures.
✔ Rodent & Pest Sealing – Blocks entry points to keep pests out.
✔ Bath & Shower Repair – Waterproofs and seals areas exposed to moisture.
✔ Roof Repairs – Protects against leaks and weather damage.
✔ RV & Motorhome Repair – Keeps vehicles secure from the elements.
✔ Auto & Boat Repairs – Patches up damage with a durable, flexible seal.
✔ Lawn & Garden Projects – Use for planters, ponds, and outdoor fixtures.

Compatible Surfaces

Flex Paste works on a wide range of materials, including:

Wood & Glass
Tile, Concrete & Brick
Metal & Aluminum
Stucco & Masonry
Copper & Fiberglass
Ceramic & Porcelain
Natural Stone & Roofing
PVC, EIFS, EPDM, CSPE & Hypalon Polyurethanes

How to Apply

Preparation – Ensure the surface is clean, dry, and free of grease or dirt.
Open & Remove Packaging – Lift the protective foil and remove the silica gel packet (do not discard).
Application –
- Use a putty knife, trowel, or similar tool to apply an even layer.
- Avoid scooping deeply into the tub to prevent air pockets.
- For better adhesion, etch the surface before application.
- Smooth out or add textures/designs as desired.
Allow to Cure –
- Skins in 15-30 minutes
- Fully cures in 24-48 hours
- Strengthens over time
Additional Coats – Ensure the first coat is fully dry before applying another layer.

Clean-Up & Storage

Clean Tools – Use mineral spirits or acetone (do not use water).
Preserve the Paste –
- Press the foil directly onto the surface of the remaining paste.
- Replace the silica gel packet and secure the lid tightly.
- Store in a humidity-controlled environment.

For industrial-strength sealing and repair, Flex Paste delivers superior performance for a variety of projects.