Double-hung windows are the style most people picture when they think “window”: two sashes, both able to move, both top and bottom sliding independently. That makes them easier to clean from inside and gives you more control over airflow than a single-hung version.
They’re also the style you’ll find on the largest share of homes in the Triangle, which is part of why they’re still the top request we get for replacement work.
A lot of the housing here dates to a specific window in time. The median construction year for homes in Durham is 1995, and roughly 17% of the housing stock went up during the 2000s alone. That matters because vinyl double pane windows installed during that building boom are now 20 to 30 years old.
Most vinyl windows are rated for a service life of 20 to 25 years before seals fail and gas fills (argon, typically) start leaking out, which is usually when homeowners notice fogging between the panes or a sash that won’t stay up on its own.
If your windows came with the house and the house was built in the late 1990s or early 2000s, there’s a decent chance you’re past that window (no pun intended) already.
There are two ways this gets done, and which one applies to your project depends on the condition of your existing frame.
A retrofit on a standard 24×36 opening typically takes 45 minutes to an hour per window once a crew is set up. Full frame jobs run longer, especially if trim has to be rebuilt or there’s siding to work around.
National data for double-hung window projects gives you a reasonable ballpark for what to expect locally, since labor and material costs in this region track close to the national midpoint.
| Project Scope | Typical Installed Cost | Notes |
|---|---|---|
| Single vinyl double-hung window | $450 – $1,200 | Vinyl, double pane, Low-E glass |
| Single wood double-hung window | $875 – $1,865 | Higher material and finishing cost |
| Whole house project (10 windows) | $4,500 – $12,000 | Before bulk pricing discount |
| Retrofit vs. full frame | +$150 – $250 per window | Full frame runs higher due to trim and framing work |
Most contractors knock 10 -15% off the per window price when you replace everything at once instead of doing them one or two at a time. If you’re only budgeting for a few windows this year, it’s worth asking whether phasing the project changes that math.
Andersen and Pella dominate national market share and both make double-hung lines rated for high humidity climates, which matters here given how much moisture this region sees in the summer. Marvin sits a step up in price with more custom sizing and wood clad options.
Simonton is the value play: solid vinyl construction, ENERGY STAR certified glass packages, and a lower price point without cutting corners on the seal or hardware. ProVia is another option worth mentioning if you want a heavier duty vinyl frame with more color choices.
We can walk through which of these actually fits your house instead of guessing from a brochure.
You probably don’t need a full inspection to know something’s off. Look for:
None of these are emergencies by themselves. But two or three at once on the same window usually means replacement is cheaper than repair over the next few years, not just more convenient.
If you want a quote, send us the window count and rough age of your home and we’ll get you real numbers, not a range pulled from a national average.
