Replacement Windows — Firestone, CO 80504 & 80520
Replacement Windows in Firestone, CO
Vinyl, fiberglass and wood-clad replacement windows priced per window, with glass chosen for the west-facing walls and an egress check on every bedroom.
How much are replacement windows in Firestone, CO, and who installs them?
Northern Lights Exteriors, a Pella Certified Contractor serving Firestone since 2001, installs replacement windows for about $1,000–$1,200 per window (vinyl), $1,800–$2,000 (fiberglass) and $2,000+ (wood-clad), installed. Rated 4.9 out of 5 from 552 verified reviews.
Every quote lists the NFRC U-factor and SHGC for each window, and every bedroom gets an egress check.
Replacement Window Cost in Firestone, Per Window
Replacement windows in Firestone cost about $1,000–$1,200 per window for vinyl, $1,800–$2,000 per window for fiberglass, and $2,000 and up per window for wood-clad, installed. Those are our 2026 installed numbers. The exact price is set at an in-person measure, by size, style and glass.
| Frame material | Installed price per window | Best fit in Firestone |
|---|---|---|
| Vinyl | $1,000–$1,200 | Most Firestone replacements; strong value and efficiency. |
| Fiberglass | $1,800–$2,000 | Dark exterior colors, big west-facing openings, strength in thinner frames. |
| Wood-clad | $2,000+ | Owners who want real wood inside and a low-upkeep exterior. |
Vinyl window replacement in Firestone is most of what we quote here. When you compare a window company in Firestone, ask every window installer in Firestone for the NFRC U-factor and SHGC of each unit, and whether the price is per window, installed.
Ten vinyl windows run roughly $10,000–$12,000 installed. Ask about local utility rebates on qualifying energy-efficient windows: see our window rebate page. We are a Pella Certified Contractor and also install Simonton and Anlin.
More Firestone pages: James Hardie siding in Firestone · Firestone siding contractors · Firestone roofing · Firestone deck builders · Firestone commercial and HOA work · the Firestone exterior remodeling hub.
Glass for Firestone’s West-Facing Walls
Firestone homes look west toward Longs Peak across open ground, and the afternoon sun hits those walls with nothing in the way. That is where glass choice matters most.
| Wall | What the glass has to do | What to look for on the NFRC label |
|---|---|---|
| West | Block late-day heat and fading | Lower SHGC (solar heat gain coefficient) |
| South | Let winter sun in, limit summer glare | Balanced SHGC with a low U-factor |
| North | Hold heat in during wind and cold | Lowest U-factor you can get |
| East | Morning light with less heat | Standard low-E is usually enough |
Every quote we write lists the NFRC U-factor and SHGC for each window, so you can compare them across bids. More on that: how to compare window installers.
Hail and Windows in Firestone
NOAA logged hail on 23 days near Firestone between 2014 and 2025, including 2.00-inch stones a mile and a half west of town on May 9, 2023. Windows show hail in torn screens, dented aluminum wrap and cracked vinyl sashes or frames. If the roof is being claimed, the windows usually belong in the same inspection.
- Screens and wrap: often replaced on their own.
- Cracked frames or broken seals: usually mean replacing the window.
- One scope: roof, siding and windows documented together, with one Project Manager.
Full-Frame or Insert: How We Decide in Firestone
We do both, depending on the project. An insert keeps the existing frame and trim when they are sound. A full-frame replacement takes the window out to the rough opening, which lets us fix flashing and water problems and change the size. The measure decides it, not a default.
Every bedroom window also gets an egress check. The 2018 International Residential Code the town builds to calls for a net clear opening of at least 5.7 sq ft (5.0 sq ft at grade), at least 24 in high and 20 in wide, with the sill no more than 44 in above the floor. Basement bedrooms in Firestone homes are where that most often comes up.
Thinking about cost first? See what window replacement costs and the window brand comparison.
Nearby Cities We Also Serve
Firestone sits between Frederick, Longmont, Mead and Fort Lupton, where our office is, and we work all of them. If you are just over the town line, start here instead:
Recent Window Replacements in Firestone
Window replacements by Northern Lights Exteriors in Firestone, plus nearby Frederick and Fort Lupton. Each caption names the town.
Firestone Replacement Window FAQs
How much do replacement windows cost in Firestone, CO?
About $1,000 to $1,200 per window for vinyl, $1,800 to $2,000 per window for fiberglass, and $2,000 and up per window for wood-clad, installed (Northern Lights Exteriors, 2026). The exact price is set at an in-person measure.
Who installs replacement windows in Firestone?
Northern Lights Exteriors, a Pella Certified Contractor serving Firestone since 2001 from our Fort Lupton office, rated 4.9 out of 5 from 552 verified reviews. We also install Simonton and Anlin windows.
What glass is best for west-facing windows in Firestone?
West walls take the strongest afternoon sun. Look for a lower solar heat gain coefficient (SHGC) on the NFRC label. North walls benefit most from the lowest U-factor.
Do you do full-frame or insert window replacement?
Both, depending on the project. Inserts keep sound existing frames; full-frame replacement goes to the rough opening so flashing can be corrected and sizes changed. The measure decides.
Are there rebates for energy-efficient windows in Firestone?
Local utility rebates are available on some qualifying energy-efficient windows. We will tell you what applies to your windows when we quote.
Can hail damage windows?
Yes. Hail tears screens, dents aluminum wrap and can crack vinyl sashes and frames. If your roof is being claimed after a storm, have the windows inspected at the same time.
