How to Tell If Your Window Frames Are Rotting (Before You Pull Out the Siding)

Wood window frames in Mississippi don't rot from the outside in. They rot from the inside out. By the time you can see peeling paint or a soft spot with your thumb, the damage is usually 3-5 years deep and has often spread into the framing around the opening. Here's how to catch it early — and what it costs to fix at each stage.

Why Mississippi Is Especially Brutal on Wood Windows

Three factors combine to make Mississippi the worst state in the country for wood window longevity:

• 85%+ relative humidity for 5+ months per year drives moisture into any paint crack, no matter how small.

• 95°+ summer heat expands wood and opens micro-cracks in paint and caulk where water finds a way in.

• Heavy spring rain events hit horizontal surfaces (window sills) repeatedly. The sill is always the first thing to go.

The 2-Minute Rot Test (Do This Every Spring and Fall)

1. Grab a regular pocket screwdriver or awl. You don't need anything fancy.

2. Start at the bottom corners of each window, outside. Corners fail first because water pools there.

3. Press the tip of the screwdriver firmly into the wood. Healthy wood feels solid and resists the point. Rotten wood feels spongy, gives in, or the tip sinks 1/4 inch with very little pressure.

4. Check the sill (the horizontal piece at the bottom of the window), the bottom of the frame legs, and anywhere you see peeling or bubbling paint.

5. If the screwdriver sinks in anywhere, you have active rot. Move to the inspection below.

The 4 Stages of Wood Window Rot (and What Each Costs)

Stage 1: Paint Bubbling, Wood Still Solid ($100-$300 per window, DIY-able)

Caught early. Scrape, sand, prime, caulk, and repaint. You can do this yourself in a weekend. Buys you 3-5 more years.

Stage 2: Soft Spots on Sill Only ($300-$800 per window, contractor-friendly)

A contractor cuts out the rotted sill, splices in new wood (or replaces with PVC or composite), and repaints. Frame is still salvageable. Good investment if the rest of the window is healthy.

Stage 3: Rot Into Frame Legs ($800-$1,500 per window, full replacement recommended)

Now the rot is in the vertical frame members. Patching is expensive and doesn't last. At this point full window replacement makes more financial sense than continuing to repair.

Stage 4: Rot Behind the Frame Into Rough Opening ($1,800-$3,500+ per window)

Now we're cutting out siding, rebuilding the rough opening, flashing, and installing a new window. This is the most expensive stage — and it's where most Mississippi homeowners discover the problem because the rot has finally shown through to the inside wall or caused water stains. Don't let it get this far.

The Replacement Choice That Prevents It From Ever Happening Again

If you're replacing rotted wood windows, we almost always recommend vinyl or fiberglass. Both are waterproof to the frame — no more annual painting, no more rot. Wood-clad is available for historic homes where appearance matters, but even those we spec with aluminum or vinyl exteriors that shed water.

Free Rot Inspection

We offer free rot-damage inspections for Rankin, Hinds, Madison, and Forrest County homeowners. We'll tell you honestly which stage each window is in, whether repair is worth it, and what full replacement would cost. No pressure. We call within 2 business hours of your online request.