If the material feels soft, spongy, or crumbles easily, you are dealing with rot. Next, consider the geometry of the hole.
Weatherproof Large Wood Hole Filler Tips for Durable Exterior Repairs
A clean break from a dropped tool is fundamentally different from crumbling rot, and the repair strategy must reflect this. This mixture is sculpted slightly proud of the surrounding surface to account for shrinkage as it cures.
In these cases, the affected area must be cut away entirely, and a solid, stable substrate must be established before any filling can occur. Aesthetic Blending and Finishing Technical strength means little if the repair is visibly obvious.
Weatherproof Large Wood Hole Filler Tips for Durable Exterior Repairs
Unlike soft fillers, a wood patch provides genuine structural support, making it ideal for load-bearing applications like sills, beams, or fence posts. This creates a mechanical bond, giving the filler something to grip onto and dramatically reducing the chance of shrinkage or slippage.
More About Filling large holes in exterior wood
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