Flex Paste Waterproof Paintable Putty – Seal Gaps, Cracks & Holes (Clear) | UV Resistant

Overview

Flex Paste is a waterproof paintable putty and spackle sealant designed to block air and water while staying flexible after curing. The clear formula is versatile for a wide range of repairs, from drywall seams to roof edges and RV surfaces. Its thick, rubberized texture clings to rough and smooth surfaces alike, filling large gaps quickly and forming a durable, elastic barrier. When fully cured, it accepts paint to blend with surrounding finishes, offering a seamless look across interiors and exteriors.

New Stay Fresh Container

The stay fresh container blocks air and locks in freshness, helping extend the sealing power of Flex Paste with less waste and easier storage between projects.

Coat, Seal & Protect

Deep penetration helps seal out air, water, and moisture. Once dry, Flex Paste becomes a stiff yet flexible, watertight rubberized layer that moves with the surface to resist cracking.

Underwater Application

Designed to work in moist environments, Flex Paste can be applied underwater and cures underwater, enabling repairs in challenging conditions where traditional sealants struggle.

Fills Large Areas

The thick rubber paste clings to surfaces and instantly fills large gaps, cracks, and holes without sagging, reducing the need for multiple passes.

Fully Paintable & UV Resistant

After curing, it accepts paint in any color. It also offers UV resistance to help prevent fading and supports rust and corrosion resistance on treated metal edges when applicable.

How to Use

1. Clean and dry the repair area to remove dust, oil, and loose material.
2. Apply a generous bead over gaps or cracks; shape with a tool for the desired contour.
3. Allow to cure per product instructions; avoid contact with moisture during curing.
4. Paint once fully cured to blend with surrounding surfaces.

Ideal Uses

• Sealing gaps on walls and drywall seams
• Patching gaps on EPDM roofs and concrete patches
• RV roof repairs and leak prevention
• Pipe and vent penetrations, around fixtures, and other irregularities

Note: Flex Paste is designed to seal and protect; performance can vary with substrate and conditions. This copy highlights practical uses and potential benefits while avoiding guarantees.