Monroe, NC · since 2000
How Long Does Exterior Paint Last in North Carolina?
The honest answer is a range, and the range is decided almost entirely by what happened in the four days before the first coat went on.
- 7–10years, prepped properly
- 2coats, always
- Seven to ten years on siding when the surface was properly prepared, and less on sun-facing trim.
- What shortens it is almost never the paint. It is chalk, damp, skipped primer and one coat instead of two.
- In this climate, mildew on the shaded side and UV on the south and west are the two clocks running.
- A chalky hand on the siding is your signal that the old coating is breaking down.
- Elevations fail at different rates, and doing only the bad ones is a legitimate job.
The range, and what decides where you land in it
Done properly, expect seven to ten years on siding in this part of North Carolina, and somewhat less than that on south and west-facing trim. Painted brick and fiber cement usually sit at the top of the range; older wood siding and heavily exposed trim sit at the bottom.
The reason it is a range and not a number is that almost all of the variance comes from workmanship rather than from product. Two houses on the same street, painted the same month with the same material, will diverge by years if one was washed and primed properly and the other was not.
Paint does not stick to chalk, pollen or mildew. Everything expensive about an exterior repaint happens before the first coat.
Chris McManus, Chris' Painting & RemodelingThe five things that shorten it, in order
| What was skipped | What it looks like later | How soon |
|---|---|---|
| No wash, or a wash that left chalk | The new coat lifts in sheets, taking the old one with it | Two to four years |
| Bare wood left unprimed | Blotchy dull patches, then early flaking at those spots | Three to five years |
| Painting over damp or mildewed wood | Black speckling returns through the new coat | One to three years |
| One finish coat instead of two | Uneven color and early chalking on the exposed elevations | Three to five years |
| Caulk applied over failed caulk | Joints open again and let water behind the trim | Two to three years |
Why your house does not fail evenly
Homeowners often describe the house as “needing painting” when in fact two sides of it are fine. The elevations do very different jobs.
- South and west. Take the UV. They fade and chalk first, and the trim on those sides goes before the siding does.
- North. Stays shaded and damp, so it holds color far longer but grows mildew. Frequently it needs washing rather than repainting.
- East. Usually the longest-lived elevation on the house.
- Under the gutter line and at grade. Where water actually sits. This is where the rot is, whatever the paint looks like.
A five-minute check you can do yourself
- The chalk test. Rub the siding with a dry hand on the sunny side. Chalky residue means the coating is breaking down.
- Press the trim. Especially under gutters, at sills and at the base of porch posts. Anything soft is rot, and paint will not fix it.
- Look at the caulk joints. Open, cracked or shrunken beads are letting water in behind the trim.
- Check the north side for black speckling. That is mildew feeding on the film, not dirt.
- Look at the edges of boards. Lifting or curling at board ends is moisture moving out from behind, which is a different problem from a worn finish.
Stop planning a paint job and start planning a repair. Rot is a water problem; painting over it buys about a season and hides the evidence in the meantime. We cut it out, replace the board and price that separately from the painting so you can see exactly what you are paying for. That work is on the contractor services page.
What actually extends it
Four things, and only one of them is about the paint itself. Wash the house every couple of years, especially the shaded elevations. Keep the gutters clear so water is not running down the fascia. Cut vegetation back off the siding so it can dry. And when you do repaint, insist on two coats over a washed, scraped, spot-primed surface in a mildew-resistant satin acrylic.
Do those and the top of the range is realistic. Skip the first three and you will be back at year five whatever you paid for the paint.
Is humidity really that big a factor?
Yes, but not in the way people assume. Humidity does not dissolve paint. What it does is feed mildew on shaded elevations and keep substrates damp for longer, and paint applied over a damp or mildewed surface fails early regardless of how good the product was.
How do I know if I need a full repaint or just a wash?
Rub the siding with a dry hand. If you come away chalky, the old coating is breaking down and needs washing off before anything new goes on. If the film is intact and the problem is just dirt and mildew in the shade, a wash may genuinely buy you a couple of years.
Do I have to do the whole house at once?
Not necessarily. The sun-facing elevations usually fail years before the shaded ones, and doing those on their own is a legitimate job. The catch is color match: an eight-year-old finish and a fresh one will not match exactly even from the same can, so we will tell you where the seam will be visible.
What about painted brick?
Painted brick generally holds up well if it was primed with a masonry primer and coated with something breathable. Where it goes wrong is trapped moisture, which pushes the coating off in sheets. That is a reason to think hard before painting brick the first time, rather than a reason to avoid repainting brick that is already painted.
When is the best time of year to paint an exterior here?
Spring and fall are easiest, but the calendar is not really the constraint. Surface temperature and dew are. The wood has to be dry, the day has to stay above the coating's minimum, and the film needs to set before evening damp lands on it. We work through the summer by starting early and following the shade.
Get a free estimate
Not sure whether yours needs painting or washing?
We will walk the elevations with you and tell you honestly which sides need work and which do not. Free, in writing, and no obligation.