What Does "Custom Window" Actually Mean?
A stock window is a pre-built unit in a fixed size, fixed color, and fixed configuration — designed to fit the most homes possible, not your home specifically.
A custom window starts from your specifications. You choose the series, the material, the exterior color, the interior finish, the glass package, the grille style, the hardware finish, and in many cases the exact dimensions down to a fraction of an inch. The window is then manufactured to those specs.
For homeowners with older homes, unusual opening sizes, historic architecture, or a clear vision for how their home should look and feel, custom windows aren't a luxury — they're the only way to get a result that truly fits.
ACRE Windows & Doors installs the complete Andersen window line across Pennsylvania, New Jersey, and Delaware. Here's what goes into designing one.
Benefit 1: Choosing the Right Series for Your Home and Budget
Everything flows from series selection. Andersen offers four distinct product lines:
- The A-Series is the flagship — real wood interiors that can be stained or painted to match any room, exterior options in a wide range of colors, and the greatest flexibility in sizing and configuration. The right choice for architecturally distinctive homes and homeowners who want maximum design control.
- The 400 Series is the industry benchmark. Built with Andersen's patented Fibrex® composite — more durable than wood, more stable than vinyl — it delivers premium quality and energy performance at a price point that works for most projects. It's ACRE's most-installed product line for good reason.
- The E-Series is fully made-to-order — every unit manufactured to exact specifications. The right choice for new construction, significant additions, or homes with openings that no catalog product will fit correctly.
- The 100 Series is built entirely from Fibrex® composite with no wood components. The lowest-maintenance option in the line — ideal for rental properties, vacation homes, or anywhere zero upkeep is the goal.
Working with an Elite Andersen Certified Contractor means you're matched to the right series for your home, not steered toward whatever a big-box retailer has in stock.
Benefit 2: Exact Sizing — A Perfect Fit Every Time
Off-the-shelf windows come in standard sizes. Your home does not.
Older homes especially often have opening dimensions that don't align neatly with catalog sizes. A window that's too small leaves gaps requiring extra trim to cover. One that's too large means modifying the opening — adding cost and disruption. Custom-sized windows are manufactured to the precise dimensions of your opening, which means:
- A cleaner, tighter installation with better air sealing
- Improved energy performance with fewer infiltration gaps
- A more finished appearance — the window fills its opening the way it was designed to
- Preserved proportions — critical for historic homes and HOA-governed communities
ACRE Windows & Doors measures every opening before a project is quoted. Every Andersen window is manufactured to those measurements.
Benefit 3: Exterior Color — Your Home's First Impression
The color of your windows affects the entire face of your home. Windows that clash with siding, trim, or roofline undermine curb appeal no matter how well they're installed. Windows chosen with the exterior palette in mind become part of the architecture.
Andersen's exterior color options far exceed what standard manufacturers offer:
- The 400 Series comes in White, Sandtone, Terratone, Eagle, Cashmere, and Black
- The A-Series expands that range with additional tones
- The E-Series offers over two dozen options including dark bronzes, architectural grays, and custom colors
Andersen's exterior finishes are also engineered to resist fading and UV degradation. The color you choose on day one is the color you'll have a decade from now.
ACRE's estimators evaluate the full exterior of a home — siding, trim, roof, front door — before making color recommendations. The goal is a window package that looks like it was always there.
Benefit 4: Interior Finish — Matching the Inside of Your Home
Standard replacement windows come with white or off-white interiors. Fine for builder-grade homes. Incongruous in rooms with stained wood floors, dark millwork, or any palette that isn't built around crisp white trim.
Custom windows give you real choices. Wood interiors — available in the A-Series and E-Series — can be factory-primed for painting or left unfinished for staining, so the window interior matches your trim exactly. Fibrex® interiors on the 400 and 100 Series come in White, Sandtone, and Terratone — smooth, maintenance-free, and right for most painted trim environments.
It sounds like a minor detail. It's actually one of the biggest contributors to whether a new window enhances a room or just fills an opening.
Benefit 5: Glass Packages — Controlling Light, Heat, Privacy, and Sound
This is where custom windows pay off most clearly in daily comfort and long-term energy costs.
- Low-E Coatings reflect heat energy while allowing visible light through. All Andersen windows include High-Performance Low-E4® glass as standard, with variants optimized for different conditions: Low-E4 SmartSun™ for high solar-gain exposures, Low-E4 Sun™ for direct afternoon sun.
- Double vs. Triple Pane — double-pane is standard and performs well in most climates. Triple-pane reduces U-factors further, minimizes condensation risk, and is worth considering for heavily used rooms or extreme climates.
- Gas Fill — Argon between the panes is standard and significantly reduces heat transfer versus air. Krypton provides even better performance in triple-pane configurations.
- Acoustic Glass — laminated glass that interrupts sound transmission. A meaningful quality-of-life upgrade for homes near highways, train lines, or airports that many homeowners don't realize is available.
- Obscure and Specialty Glass — available for bathrooms, sidelights, and safety-critical applications where privacy or impact resistance is needed.
The right glass package reduces energy bills, protects interior furnishings from UV damage, and makes rooms more comfortable year-round. The wrong one does the opposite — quietly, expensively, for years.
Benefit 6: Window Style and Operation — How Your Windows Actually Work
"Window" covers a wide range of products that look and function very differently:
- Double-Hung — both sashes slide vertically, both tilt inward for cleaning. The most common style in American homes and appropriate for virtually any architecture.
- Casement — hinged at the side, cranks outward. Offers the most ventilation of any style and seals tighter when closed. Reads more contemporary; a natural choice for kitchens where a double-hung would be hard to reach.
- Awning — hinged at the top, opens from the bottom. Can stay open in light rain. Pairs naturally with picture windows and works well in bathrooms and basements.
- Picture — fixed, doesn't open. Maximizes glass area and view. Right for spaces where ventilation comes from other windows and bringing in light and sightline is the priority.
- Bay and Bow — project outward from the wall, adding interior space and exterior visual interest. Statement installations that change the character of a room.
- Specialty Shapes — half-rounds, quarter-rounds, trapezoids, and fully custom geometries available in the A-Series and E-Series for homes that need something a catalog can't provide.
Mixing styles throughout a home — casements in the kitchen, double-hungs in the bedrooms, a picture window anchoring the living room — is standard practice and often the architecturally correct approach.
Benefit 7: Grille Patterns — The Detail That Defines the Architecture
If two homes with identical window sizes look completely different and you can't immediately identify why, the answer is almost always grilles.
Grilles divide the glass into individual panes — or simulate that appearance. Their presence or absence, and the pattern they create, is one of the most powerful visual signals of a window's architectural character.
Andersen offers several grille systems: Grilles Between the Glass (GBG) are sandwiched between the panes, protected from dust and damage. Simulated Divided Lites (SDL) place grilles on both interior and exterior surfaces for the most authentic historic appearance. True Divided Lites (TDL) use actual separate panes — available in the E-Series for highest-authenticity restoration work.
Grille patterns include Colonial (equal rectangular panes — traditional), Prairie (border panes around a central open glass area — Craftsman-influenced), Diamond (diagonal muntins for a leaded-glass effect), and fully custom configurations for specific historic references.
Getting grilles wrong is one of the most visible mistakes in window replacement. Getting them right is one of the most effective things you can do to make a home look exactly like itself.
Benefit 8: Hardware Finish — The Final Detail
Hardware is functional, but it's also the finishing touch that either completes the window's design or undermines it.
Andersen offers hardware in Bright Brass, Antique Brass, Oil-Rubbed Bronze, Brushed Chrome, Satin Nickel, White, Black, and Stone. The right finish coordinates with the interior environment — matching the faucets, cabinet pulls, and light fixtures in the room. It's a five-minute decision during the design process that separates a considered result from a generic one.
Benefit 9: Long-Term Value — Custom Windows Pay Back
The financial case for custom windows works on multiple levels:
Energy savings. The right glass package — appropriate Low-E coating, correct gas fill, correct pane count — measurably reduces heating and cooling costs. The U.S. Department of Energy has documented meaningful energy bill reductions from replacing single-pane windows with energy-efficient models.
Eliminated maintenance costs. Andersen's Fibrex® composite windows don't rot, warp, swell, or require repainting. The ongoing cost of maintaining painted wood windows — repainting every few years, addressing rot, replacing hardware — goes to zero.
Home value. Window replacement consistently ranks among the highest-ROI home improvement projects in Remodeling Magazine's annual Cost vs. Value report. Custom windows return more at resale than standard replacements because they read as higher quality to buyers and appraisers.
Warranty protection. As an Elite Andersen Certified Contractor, ACRE Windows & Doors' installations qualify for Andersen's enhanced warranty — available only through certified contractors — covering both the product and the installation.
What to Expect from a Custom Window Consultation with ACRE
ACRE Windows & Doors offers free in-home estimates throughout PA, NJ, and DE — seven days a week, same-week availability in most markets.
A typical consultation covers: precise measurement of every opening, an evaluation of the home's architectural character, a walk-through of the appropriate Andersen series and options, and all design decisions — color, glass, grilles, hardware, screens. A detailed written proposal follows, with no pressure and no obligation.
ACRE's estimators are in-house employees, not commissioned salespeople or subcontractors. The goal is the right recommendation for your home, not the largest sale.
Ready to Design Your Custom Windows?
ACRE Windows & Doors is an Elite Andersen Certified Contractor serving PA, NJ, and DE — 20,000+ windows and doors installed, 4.8 stars across 700+ verified Google reviews, 100 years of combined experience.
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ACRE Windows & Doors | Elite Andersen Certified Contractor | acrewindows.com Serving PA, NJ & DE | 4.8 Stars — 700+ Google Reviews | 20,000+ Windows & Doors Installed
