WePaintSeattle

Wood Door Restoration
Mercer Island

Before After

Mercer Island Wood Door Restoration UV and Water Damage — Exterior Wood Repair

Project Details

  • Location: Mercer Island, Washington
  • Property: Single-family residence
  • Scope: Front entry door restoration + teak patio table refinishing
  • Spec written by: John Shearer

What We Were Dealing With

This door had two separate failure modes happening at the same time:

  • Lower third: Standing water, splash-back, and capillary absorption had worked into the substrate
  • Upper sections: UV exposure had broken down the lignin — the structural binder in wood fiber — causing color fade and coating failure
  • Net result: Uneven deterioration, failed adhesion, and early substrate compromise

Most painters sand it down and recoat. That doesn’t fix the problem. Once moisture cycling and UV degradation have destabilized wood fibers at the cellular level, any coating applied over them will fail — it has nothing solid to bond to.

This required a restoration protocol, not a refinish.

The Process

Step 1 — Strip the failed finish Chemical stripper only. No heat guns, no aggressive sanding — both open the grain further and make the problem worse.

Step 2 — Neutralize the surface Denatured alcohol wipe-down — no water. This removes residual oils and stripper contaminants without reintroducing moisture before consolidation.

Step 3 — Dry mechanical correction Progressive dry sanding to remove oxidized fibers and create uniform surface energy. No water-cut sanding at any stage.

Step 4 — Wood conditioner Equalizes porosity across the grain. Without this step, stain absorbs unevenly and the finish looks patchy regardless of application quality.

Step 5 — Wood consolidant This is the step most painters skip — and it’s where the actual durability is built.

A penetrating resin system is worked into the compromised fibers. It re-hardens degraded wood structure and creates a stable, bondable substrate for the finish system. In practical terms: it converts wood that would otherwise need replacement into a surface that holds a coating long-term.

Finish System

Step 6 — Oil-based stain Deep penetration into the conditioned substrate. Restores color and rebuilds UV absorption characteristics from within the wood.

Step 7 — Clear protective topcoat Film-build layer over the stain. Shields against UV radiation, moisture cycling, and surface abrasion.

The difference between a paint job that lasts 18 months and one that lasts 5+ years on exterior wood isn’t the topcoat — it’s everything that happens before it.

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