Exterior Window Capping Cost
Explore exterior window capping cost and installation pricing from our editor, as well as consumer price bids on this common process. Scroll down to read about the basics, the pros, and the cons to window capping.
Window Capping Cost: $75 to $200 per window
(per window price)
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Window Capping Basics
Many homes have wood casing around the outside of their windows. Over time, the wood can become chipped or begin to rot, especially in areas of the country that get lots of bad weather. Window capping uses vinyl or aluminum to cover and seal the exterior casing. This protects the casings from weather and makes sure that no water and / or moisture gets into the walls (when done well, obviously).
In 90% of cases, the exterior capping is done on site by the window installer(s). Each piece must be custom cut and fit, which does take some skill. Therefore, always make sure that the person doing your project is well versed in the art of exterior window capping. The final step is to caulk and seal the "unit" to truly weatherproof the window surround.
Window Capping Cost
Exterior window capping cost is going to vary considerably. By far, the largest X factor is the company that does the work. Other factors will include the material they use (vinyl or aluminum), the size and shape of the windows, and the overall condition of the surrounds or casings.
Expect the cost to be between $75 to $200 per window. I would the average cost is $125 per window.
Price Range: $75 to $200 per window
Sunrise MI vs Simonton 9800 vs Alside Mezzo
| Window Series | Total Quote Installed | Average Cost Per Window | Difference From Lowest Quote |
|---|---|---|---|
| Alside Mezzo Double Pane Window | $10,280 | $1,285 per window | Lowest quote |
| Alside Mezzo Triple Pane Window | $10,760 | $1,345 per window | $480 more |
| Simonton 9800 Window | $10,860 | Approximately $1,358 per window | $580 more |
| Sunrise MI Window | $12,450 | Approximately $1,556 per window | $2,170 more |
| Sunrise MI Vanguard Window | $20,210 | Approximately $2,526 per window | $9,930 more |
"Hi Dane, I've narrowed my project down to several bids on 8 windows and would appreciate your thoughts. Every quote includes white replacement windows with 2x4 grids, tan exterior window capping, and obscure glass in the largest window. The project consists of eight double-hung replacement windows in a variety of sizes - I might have said this already, I'm so exhausted from the bids my mind is that thinking right. These are cash only prices fyi.
Sunrise MI Vanguard Window: $20,210
Sunrise MI Window: $12,450
Simonton 9800 Window: $10,860
Alside Mezzo Double Pane Window: $10,280
Alside Mezzo Triple Pane Window: $10,760"
Betty, Homeowner - from 2026
Editor's Advice:
Betty. I think the Sunrise MI Window is the best deal of the bunch. It's certainly worth the extra cost over the Simonton and Alside window bids. And I think the fact that it covers the cost of exterior window capping makes it a fair estimate overall.
Dane — Website Editor - from 2026
⭐ PRO TIP - to save money - always collect 2 to 3 estimates and compare project quotes! ⭐
Okna 500 vs Okna 800 Window Quotes
| Window Series | Total Quote Installed | Average Cost Per Window | Upgrade Cost |
|---|---|---|---|
| Okna 500 Series Deluxe Package | $19,546 | Approximately $1,086 per window | Base quote |
| Okna 800 Series | $21,564 | Approximately $1,198 per window | $2,018 total, or approximately $112 more per window |
"Dane and Tim, thank you for the helpful information and site. I was wondering what you thought of the following bids I received in NE Ohio for Okna windows. This is from a contractor we've previously worked with on entry doors, patio door, and roof replacement so I am comfortable they'll do a proper install.
18 (7 mulled/twin units, 4 single units) Double hung Okna 500 Series Deluxe package with grids, white inside, standard exterior color. Specifically, Pocket install including insulation around window frame, exterior aluminum capping and interior trim as needed, complete clean up and haul away: $19546
Same as above but for the Okna 800 series: $21,564. So then, do you think this is a fair price for Okna 500 vs 800 series in today's market? Do you think given the small difference in price the 800 series will be worth the difference? We plan to stay in this house for 25-30 years at least."
Rick, Homeowner - from 2023
Editor's Advice:
Rick, this is always a tricky question for me to say whether a contractor's price is fair or not. It's probably fair given the exterior capping and interior trim work. If he showed you what his cost on the window is and what his typical markup is, then you would know, but contractors don't always want to provide that.
Truthfully, the only real way to know how it compares to other quotes is to have one or two local window companies who carry a similar quality product come in and give you a bid for the same scope of work. Logistically, this is always tricky since you probably have workers and the contractors in everyday.
Luckily, I do have a list of quality brands I'm happy to send your way if you'd like to check it out.
Dane — Website Editor - from 2023
⭐ PRO TIP - to save money - always collect 2 to 3 estimates and compare project quotes! ⭐
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