Casement Window Replacement Cost Breakdown (2026 Guide)
- Average Installed Cost: Replacing a casement window generally ranges from $700 to $2,100+ per unit installed, depending on frame material and glass options.
- Style Premium: Casement windows typically cost 10% to 15% more than standard double-hung windows due to their heavy-duty mechanical crank operators and airtight compression seals.
- Material Breakdown (Installed):
- Economy Vinyl (market range): $700 - $1,100
- Ultrex® Fiberglass (Infinity by Marvin): $1,600 - $2,100
- Wood Composite/Clad (market range): $1,900 - $2,300
- *These prices are inclusive of installation
Casement windows—which hinge on the side and crank open outward like a door—are one of the most popular window styles for Georgia homeowners seeking maximum ventilation, modern aesthetics, and unobstructed outdoor views. When locked, their compression seals pull tight against the frame, making them one of the most energy-efficient operable window styles on the market.
However, because casement windows rely on specialized mechanical hardware and heavy-duty hinges, understanding the exact costs involved is critical when planning your replacement project.
What Does a Casement Window Replacement Cost?
Standard casement window replacement costs vary based on the window's dimensions, glass package, and frame material. Below is an installed pricing comparison showing how different frame materials compare across the market.
Per-Window Cost Comparison (Product + Local Installation)
Material Category |
Average Installed Cost Per Window |
Long-Term Performance & Value |
Economy Vinyl |
$700 - $1,100 |
Low initial cost, but highly prone to warping and seal failure in summer heat. |
Ultrex® Fiberglass(Our Choice) |
$1,600 - $2,100 |
8x stronger than vinyl. Zero maintenance, permanent seal integrity, and maximum lifespan. |
Wood Composite / Wood-Clad |
$1,900 - $2,300 |
Traditional interior aesthetic, but requires high maintenance and carries rot risks. |
Why We Specialize Exclusively in Ultrex Fiberglass
While economy vinyl and high-maintenance wood exist on the market, NG Windows does not carry vinyl or wood products. Some home improvement decisions should only be made once, which is why we specialize exclusively on Infinity by Marvin® windows built with proprietary Ultrex fiberglass.
Here is why fiberglass outperforms standard window materials:
- Unmatched Structural Strength: Ultrex is 8 times stronger than vinyl and 3 times stronger than wood composites. It easily supports large glass panes without flexing or warping under weight.
- Similiar Expansion Rate to Glass: Unlike vinyl—which expands and contracts rapidly in Georgia's scorching summer heat—Ultrex expands at virtually the same rate as glass. This prevents stress cracks, keeps mechanical cranks operating smoothly, and preserves airtight seals for life.
- Low Maintenance, High Beauty: Features an acrylic finish that resists fading, chalking, and scratching, giving you the classic, narrow-frame look of painted wood without the endless upkeep.
Key Factors That Impact Your Replacement Quote
When reviewing a quote for casement windows, several major variables shape your final total:
- Window Size: Larger windows require more raw materials and heavier glass panes, which naturally increases the base product cost. Additionally, when glass openings exceed certain dimensions (or sit close to floors and walkways), local building codes often require tempered safety glass, which impacts the overall price of the unit.
- Glass & Efficiency Packages: High-performance Low-E coatings reflect intense thermal heat away from your home while letting in natural sunlight, significantly reducing strain on your HVAC system during hot Alpharetta summers.
- Installation Quality & Water Barriers: Proper installation requires careful leveling, precise flashing, and commercial-grade architectural sealants. Cheap installation shortcuts—like sloppy caulking or wrapping rotting wood with aluminum—lead to hidden moisture damage and costly repairs down the road.
Flexible Financing & Savings Options
A full window upgrade is a major investment in your home's long-term value. To keep your project budget-friendly, NG Windows provides interest-free financing options and flexible monthly payment plans.
You can also explore our Loyalty Advantage Program to enjoy exclusive perks and savings on your future projects, allowing you to replace your windows at a pace that is comfortable for you.
Ready to Upgrade Your Home's Windows?
If your current casement windows are drafty, fogged between panes, or stubborn to crank open, our local experts are here to help. We bring extensive installation experience to homes across the metro area—whether you need replacement windows in Alpharetta or anywhere across greater Atlanta.
Contact NG Windows today to schedule a free, in-home consultation and receive an accurate, transparent proposal for your project!
