Why architectural epoxy is the secret to saving rotted window trim
In short: Watch general contractor Tom Silva demonstrate how to stabilize and repair decaying wood using a specialized two-part epoxy filler. This guide explains how to restore structural integrity while accounting for the natural movement of home materials.
The repair process focuses on using an "architectural" epoxy, which is specifically engineered for flexibility. This allows the repair to expand and contract alongside the wood as humidity levels fluctuate, preventing the filler from separating over time.
The technique involves grinding out soft, decayed wood with a router before applying a bonding agent. To ensure a seamless finish, the epoxy is mixed on a custom-cut plastic putty knife that matches the window's profile, followed by a final touch-up and light sanding before painting.
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Sources
- Summary by Intellect · source: How to Fix Rotted Wood with Epoxy | This Old House
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