Flexible Wood Filler - Fill-It

Flexible Epoxy Wood Filler – High-Strength & Sandable

Repair, shape, and restore wood — with a filler that moves with it, not against it.

This two-part epoxy wood filler is designed for structural and cosmetic repairs. Unlike traditional fillers that crack over time, this formula remains slightly flexible after curing — allowing it to expand and contract with the natural movement of the wood.

✔ What it is:

A strong yet slightly flexible epoxy filler that can be sanded, shaped, drilled, and painted. Ideal for repairing damage, filling gaps, and restoring the original appearance of wooden surfaces — indoors or outdoors.

✔ What it's for:

• Filling cracks, gouges, voids, and rotten areas

• Rebuilding missing wood sections (edges, corners, trims)

• Restoring window frames, sills, and moldings

• Blending repairs seamlessly with original wood

✔ Why it works:

• Flexible: won’t crack or fall out as wood moves over time

• High adhesion: bonds tightly to wood and epoxy-treated surfaces

• Structural strength: supports load-bearing areas when fully cured

• Takes finishes well: can be painted, stained, or coated after sanding

✔ Ideal for:

• Exterior wood exposed to changing weather

• Windows, doors, fascia boards, and trims

• Furniture and decorative woodwork

• Boat repairs and restoration projects

✔ How to use:

1. Mix equal amounts of Part A and Part B until uniform in color.

2. Apply using a putty knife, spatula, or gloved hand.

3. Shape as needed — it holds form well and won’t slump.

4. Allow to cure for 6–24 hours depending on temperature.

5. Sand, drill, or coat once fully hardened.

Tip: For deeper cavities or structural rebuilds, layer the filler in stages.