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Frontenac homes sit on one to three-acre lots with architecture that’s held to a high standard—including an Architectural Review Board that evaluates exterior changes. If you’re looking for window replacement in Frontenac, the product needs to satisfy both the homeowner and the community.

Forshaw is an exclusive Marvin dealer offering custom-sized windows in premium materials—true divided lights, real wood and aluminum-clad frames, a 20-year factory finish—installed by one company from consultation through completion.

☎ (314) 993-5570   |   Schedule a Free Consultation   |   Get a Free Quote

Why Frontenac Homeowners Choose Forshaw

Products That Match Frontenac’s Standards

Frontenac’s French Provincials, New England colonials, and custom estates demand windows with genuine quality—not vinyl inserts. Marvin’s Ultimate collection offers the customization, materials, and finishes that both homeowners and the Architectural Review Board expect.

One Company, Start to Finish

We manage your project from consultation through final walkthrough. One company, one bill, one point of contact.

Full-Frame Expertise

Most Frontenac homes were built in the 1940s through 1990s, and the majority benefit from full-frame replacement. We also handle inserts when frames are sound, and price both options when both are viable.

Transparent Pricing

Detailed, itemized estimates. No pressure. If you’ve received a quote from another company, bring it in.

A Showroom Experience

Our St. Louis showroom features operable Marvin windows in living-room-style settings. See and operate the products before you decide.

150+ Years in St. Louis

Family-owned since 1871. Five generations of quality standards.

Schedule your free Frontenac consultation: (314) 993-5570

Signs Your Frontenac Home Needs New Windows

Not sure if it’s time? Here are the most common signals homeowners notice:

Fog or Condensation Between the Panes

When moisture appears trapped between glass layers, the insulating seal has failed. Energy performance is compromised, and cleaning won’t fix it.

Drafts Even When Windows Are Closed

Cold air near the windows in winter—or warm air in summer—even when everything is shut and locked. Especially common in homes with original wood frames that have been through decades of Missouri’s freeze-thaw cycles.

Difficulty Opening, Closing, or Locking

Windows that stick, won’t stay open, or don’t latch properly. This is more than an inconvenience—it’s a sign that the frame has shifted or warped enough to affect operation.

Visible Rot or Soft Spots

Soft spots in wooden frames, peeling paint that keeps coming back, or water staining around the window. These signs mean moisture has gotten behind the window, and an insert won’t solve the underlying problem.

Rising Energy Bills

Older single-pane or failed double-pane windows are a major source of energy loss—particularly in homes that predate modern energy standards.

Which Marvin Collection Fits Your Home?

French Provincial, Colonial, or Custom Estate → Marvin Ultimate

Maximum customization. True divided lights, custom sizing, six interior wood species, extruded aluminum or all-wood exteriors, 20-year factory finish. The standard for Frontenac’s most significant homes.

Mid-Century Ranch or Transitional → Marvin Elevate

Ultrex fiberglass exterior, warm pine interior. Strong performance for mid-century homes where full custom detailing isn’t required.

Contemporary Custom Build → Marvin Modern

Narrow sightlines, oversized glass, smart-home integration. For Frontenac’s newer modern-design homes.

Guest House or Secondary Structure → Marvin Essential

Full fiberglass inside and out. Marvin quality at an accessible price point.

What We Typically Recommend by Neighborhood

Frontenac has a range of home styles and ages—what’s right for one part of town isn’t necessarily what works for another. Here’s what we typically see and recommend:

Your Part of Town	What We Typically See	What We Recommend
Frontenac Estates / Geyer Rd area	Original core. Custom estates on 2+ acre lots. French Provincial and Colonial styles, 1950s–1970s.	Full-frame or insert with Ultimate. Custom sizing, period detailing, Architectural Review Board compliant.
Conway Rd / Clayton Rd area	Mix of mid-century ranches and updated colonials. 1–2 acre lots.	Full-frame or insert with Ultimate or Elevate depending on architectural requirements.
Gated communities	Newer custom construction, often $2M+. Modern and transitional designs.	Specifications for new builds. Ultimate or Modern depending on aesthetic.
Southern edge (Kirkwood School District)	Mix of established homes and renovations.	Full-frame for older homes; insert possible with sound frames.

Every home is different. This table is a starting point—the real recommendation comes from our free on-site assessment of your specific windows and frames.

Not sure what your home needs? Call (314) 993-5570 or schedule a free consultation.

Frontenac’s Architectural Review Board

Frontenac has an Architectural Review Board that evaluates exterior alterations, including window replacement. French architecture is specifically encouraged in the community. Replacement windows need to satisfy both performance requirements and the aesthetic standards the board maintains. Marvin’s Ultimate collection is designed for exactly this—custom profiles, period-appropriate materials, and finishes that complement Frontenac’s architectural character.

Energy Efficiency Worth Noting

Frontenac’s larger homes often have 25 to 40+ windows. When those are original or early double-pane units with failed seals, the cumulative energy loss is significant. Replacing them with modern Marvin windows featuring low-E glass, insulating gas fills, and thermally superior frames produces a noticeable improvement in both comfort and energy costs.

About Window Replacement in Frontenac

Frontenac was incorporated in 1947 and sits between Ladue and Creve Coeur—two of the most affluent communities in St. Louis County. The city consists primarily of single-family homes on one to three-acre lots, with French Provincial being the most popular architectural style. Average household income exceeds $280,000, and homes range from $700,000 to over $4 million. The Architectural Review Board and community standards help maintain the cohesive, park-like character that residents value.

About Forshaw

Forshaw is an exclusive Marvin dealer serving Frontenac and the entire St. Louis metro. We also serve neighboring communities including Ladue, Creve Coeur, Des Peres, Kirkwood, and Town and Country.

Frequently Asked Questions

Q: Does Frontenac’s Architectural Review Board affect window replacement? Yes. The board reviews exterior alterations including windows. Marvin’s Ultimate collection is designed to meet these requirements with custom profiles and period-appropriate materials.

Q: How much does window replacement cost in Frontenac? Cost varies significantly based on home size, number of windows, and Marvin collection. Frontenac’s larger estates involve more windows and custom sizing. We provide transparent, itemized estimates.

Q: Which Marvin collection is best for Frontenac homes? For most Frontenac estates, the Ultimate collection is the natural fit. Mid-century ranches may work well with Elevate. Contemporary builds suit the Modern collection.

Q: Can I see Marvin windows before deciding? Yes. Our showroom features operable Marvin windows in real-world settings—a short drive from Frontenac.

Q: Does Forshaw serve all of Frontenac? Yes, including Ladue, Creve Coeur, Des Peres, Kirkwood, and Town and Country.

☎ (314) 993-5570   |   Schedule a Free Consultation   |   Get a Free Quote

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