Repair if…
- Damage is on one or two walls, or a handful of panels
- The sheathing behind is dry and firm when pressed
- Matching panels are still made, or a garage or back wall can donate them
- The siding is under about 15 years old (vinyl) or 20 years (fiber cement)
- The repair quote is under about a third of a full re-side
Replace if…
- Panels are cracked, warped or loose on three or more sides
- You find soft, stained or wet sheathing behind the siding
- Your color or profile is discontinued and no wall can donate
- Paint is failing everywhere, so you would repaint the whole house anyway
- You plan to sell within a few years and the siding is visibly tired
The five checks we make at every repair visit
- How much is damaged. We count damaged panels per wall. Damage clustered on the storm side or behind a grill is a repair. Scattered failure on every side means the siding itself is wearing out.
- What is behind it. We pull a panel at the worst spot and press the sheathing. Siding is a rain screen, not a waterproof skin; if water has been getting behind it, the real problem is the wall, and new siding over wet sheathing just hides it.
- Whether it can be matched. Vinyl fades, so a new panel from the same color line can look different next to 15-year-old siding. We check whether the profile is still made and whether a less visible wall can donate panels.
- How old it is. Vinyl usually lasts 20 to 40 years, fiber cement 30 to 50. Spending heavily on siding near the end of that range rarely pays back.
- What each option costs. We price both. If the repair passes about a third of a full re-side, most homeowners choose to replace.
Repairs that almost always make sense
- A single cracked or holed vinyl panel. Vinyl is unlocked with a zip tool, the nails are pulled, and a new panel slides in. It is a small job.
- Loose or unlocked panels after wind. They are re-locked and re-fastened, usually with no new material.
- Melted vinyl from a grill or a neighbor’s window reflection. Replace the panels and deal with the cause, or the new ones will melt too.
- Bent corners and J-channel. Cheap to replace and important, because open trim lets water behind the wall.
Signs it has gone past repair
- Soft spots when you press the siding, or a spongy feel near the bottom courses
- Peeling paint or water stains on interior walls behind exterior walls
- Siding that is wavy or buckled on several walls, not just one
- Mold or mildew coming back at the seams after cleaning
- Many cracked panels after a cold-weather hail storm on older, brittle vinyl
What a partial replacement looks like
There is a middle option: replace one or two full elevations (for example the storm side and the back) and keep the rest. It avoids a patchwork look on the walls people see, and it costs a fraction of a full re-side. It works best when the remaining siding is still sound and you can live with a slight color difference between sides that are never seen together.
| What | Price range |
|---|---|
| Standard vinyl siding, installed | $5.50–$8.50 per square foot of wall |
| Full re-side, standard 2-story home (~2,000 sq ft of wall) | $10,000–$22,000 per project |
| Rotted OSB sheathing replacement | $60–$100 per 4x8 sheet |
The services involved
Questions people ask
Can you replace just one piece of siding on a house?
Yes, for vinyl, aluminum and fiber cement. Vinyl is the easiest: the panel above is unlocked with a zip tool, the damaged panel’s nails are pulled, and a new panel is locked in. Aluminum and fiber cement can also be replaced piece by piece, but they need cutting and touch-up paint, so the visit takes longer.
Can you match 20-year-old vinyl siding?
Rarely exactly. Even when the same color is still made, 20 years of sun fades the panels on the house, so a new panel looks brighter. The usual fix is to move older panels from a hidden wall, such as behind a deck or on the garage, to the visible spot and put the new panels where they will not be noticed.
A contractor wants to replace all my siding for a small problem. How do I check?
Ask for photos of each damaged area with a panel count per wall, and ask what is behind the siding at the worst spot. Damage limited to one or two walls with dry sheathing is usually a repair. Get a second opinion before signing for a full re-side; a free repair assessment costs you nothing.