Rotten Wood Repair Kits for Windows, Doors, Boats – Permanent, Waterproof & Flexible

Complete Rotten Wood Repair Kit

Everything you need to restore rotten wood — stop decay, rebuild structure, and protect for the long term.

This all-in-one kit combines a penetrating epoxy sealer, a flexible epoxy filler, and an application guide to help you permanently repair wood damaged by rot. Whether you're dealing with windows, doors, fascia boards, or outdoor trim, this system reinforces from within and restores original shape and strength.

✔ What’s included:

• Clear Penetrating Epoxy Sealer (CPES) – deeply soaks into the wood, hardens it from within, and stops rot in its tracks.

• Flexible Epoxy Wood Filler – fills gaps, rebuilds missing wood, and moves with the wood to prevent cracking.

• Mixing tools & instructions – everything you need for accurate mixing and easy application.

✔ What it’s for:

• Repairing window sills, door frames, and exterior trim

• Fixing rot damage in fascia, columns, railings, and other structural wood

• Restoring architectural woodwork and decorative elements

• Protecting against future moisture damage and fungal attack

✔ Why it works:

• Penetrates deeply to strengthen soft or rotten wood

• Seals and protects against future moisture and decay

• Fills and shapes for a clean, seamless finish

• Designed to last through years of expansion, contraction, and weather changes

✔ Easy 3-step process:

1. Soak & Seal — Apply the penetrating epoxy to saturate and harden rotten areas.

2. Fill & Rebuild — Use the flexible filler to reshape, repair, and level the surface.

3. Finish & Protect — Sand, prime, and paint as desired.

No special tools required — works with a brush, spatula, or standard shop gear.