Table of Contents
After 15 years and 135+ projects across Delaware County and the Main Line, I've replaced windows in 1890s Victorians in Media, 1950s ranches in Springfield, and everything in between. Every project teaches me something new. This guide shares what we actually do — the styles we recommend, the materials we spec, and the job-site realities that no manufacturer's brochure ever mentions.
Choosing new windows is one of those decisions that seems simple until you get into it. There are dozens of window types, hundreds of glass options, and a wide range of price points. Most online guides walk you through the same brochure copy. This one is different — it's written from the contractor side, based on what we install in real Delaware County homes and why we make those recommendations.
Window Styles — What Works in Delaware County Homes
There is no universally "best" window style. The right choice depends on your home's architecture, the room's function, your ventilation needs, and the orientation of the opening. Here is how we typically match styles to the homes we work on in this region.
Double-Hung Windows
The default choice for most Delaware County homes — and for good reason. Both sashes open, which makes them easy to clean from inside and allows flexible ventilation. They suit the colonial and craftsman homes that dominate Media, Springfield, and Swarthmore. Double-hung windows are also the easiest to replace in a like-for-like swap, since they fit standard rough openings and don't require frame modifications in most cases.
Casement Windows
Casement windows open outward on a hinge, which gives them an airtight seal when closed — useful in living rooms and studies where energy efficiency is the priority. They're also our recommendation for any opening that is hard to reach, since the crank mechanism lets you open and close them without leaning out. We see them frequently on side walls of additions and in kitchen windows above counters.
Sliding Windows
A practical choice for wide, low openings — typical in basement-level windows and modern kitchen configurations. One or both panels slide horizontally. They are lower-profile than casements and less complex mechanically, which reduces long-term maintenance.
Picture Windows
Fixed and non-operable, picture windows maximize light and framing of an outdoor view. They work well in living rooms and front-facing walls where ventilation comes from other openings. Because they don't open, they have no moving parts and typically outlast other window types with minimal maintenance.
Bay and Bow Windows
Bay windows (three panels at angles) and bow windows (four or more panels in a curve) add depth and light to a room and increase the perceived square footage of a space. They are popular in dining rooms and living areas in the larger colonial homes throughout Delaware County. The installation is more involved — we always assess the structural header above the opening before recommending this style, because bay windows add weight to the facade and sometimes require additional support.
Materials — Matching Frame Material to Your Home
The frame material you choose affects performance, maintenance, lifespan, and how the window looks from both inside and outside your home. Here is how we evaluate materials for Delaware County homes specifically.
Vinyl Frames
Our most commonly installed frame material. Vinyl does not rot, does not need painting, and holds its thermal performance over time. For most homeowners in Springfield, Broomall, and Upper Darby who want a cost-effective upgrade with minimal upkeep, vinyl is the right call. The caveat: cheap vinyl can warp in extreme temperature swings. We specify mid-to-high-grade vinyl with reinforced chambers, not entry-level contractor-grade product.
Fiberglass Frames
Fiberglass expands and contracts at nearly the same rate as glass, which means the seal holds better over time compared to vinyl. It handles Pennsylvania's hot summers and cold winters extremely well. We recommend fiberglass for second-story and exposed-elevation windows, where temperature differentials are more pronounced. The price premium over vinyl is roughly 20–35% per unit, but the long-term performance typically justifies it on those exposures.
Wood-Clad Windows
For historic homes — and Delaware County has many — wood-clad windows are often the right answer, and sometimes the required one. Homes in historic overlay districts (several neighborhoods in Media and Rose Valley) may have guidelines about window profiles and materials. Wood-clad windows with an aluminum or fiberglass exterior give you the authentic sightlines of a true wood window with far lower maintenance. We work regularly with homeowners navigating historic district approvals and can help identify what the local requirements actually are.
Aluminum Frames
Aluminum is durable and dimensionally stable, but it conducts cold easily — a real problem in Pennsylvania winters. We use it primarily in commercial work and occasionally in utility applications (garages, workshops) where thermal performance is less critical. For living spaces, we prefer vinyl or fiberglass.
Energy Efficiency — Double-Pane, Triple-Pane, and Low-E Glass
The energy efficiency conversation in Delaware County comes down to two practical questions: how exposed is the opening, and what is the home's overall envelope condition?
Double-Pane with Low-E Glass
The baseline for virtually every window we install. Two panes with an argon or krypton gas fill significantly reduce heat transfer. Low-E (low-emissivity) coatings on the glass surface reflect infrared heat in winter and block solar gain in summer — important on south- and west-facing windows where afternoon sun is most intense. ENERGY STAR-certified double-pane windows carry the Northern Zone rating appropriate for Pennsylvania's climate. Look for the NFRC label to compare U-factor and Solar Heat Gain Coefficient (SHGC) across brands.
Triple-Pane Windows
Triple-pane adds a third layer of insulating gas, lowering the U-factor further. We install them on very exposed walls — large north-facing openings in drafty older homes, or in finished basements where grade-level cold transfer is an issue. For most interior-facing or partially-shielded openings, the incremental energy savings over high-quality double-pane do not offset the cost premium (typically 25–40% more per unit). We will tell you honestly if triple-pane is justified in your situation.
Gas Fills and Spacers
The gas between panes (argon is standard, krypton is used in thinner spacers for triple-pane applications) matters more than most homeowners realize. So does the spacer — a warm-edge spacer reduces condensation at the glass edge, which is where most heat loss occurs at the perimeter. We specify warm-edge spacers on all energy-efficiency-focused installs.
From the Workshop: What Daniil Notices
Daniil Akulov
Non-Standard Rough Openings in Pre-1970 Delaware County Homes
In older Delaware County homes — particularly the pre-1970 stock in Media, Springfield, and Nether Providence — we almost always find non-standard rough openings when we open up the wall. Standard replacement windows are sized for modern framing dimensions. Older homes were often framed to different specifications, and decades of settling, painting over sills, and previous patch repairs add further variation.
Our assessment process before ordering any windows:
- Measure the opening in three places — top, middle, and bottom. They are rarely identical in an older home. The smallest dimension governs the order size.
- Check the head and sill for rot or soft wood. A water-damaged sill discovered after the window arrives causes delays and additional cost. We probe every opening at the estimate stage.
- Assess the rough-opening depth. Older exterior walls were often built with different stud depths than today's standard 2x4 or 2x6 construction. The window jamb depth has to match, or extensions are required.
- Confirm the header. Bay windows and any opening enlargement require a properly sized structural header. We verify load path before recommending any window that changes the opening size.
- Account for interior and exterior trim. Removing old trim often reveals surprises — plaster "keyed" into the original window frame, or lead paint that requires containment procedures under Pennsylvania DEP rules.
We order windows only after these measurements are confirmed on-site. It adds one extra visit to the project timeline, but it prevents the far more costly problem of a window that doesn't fit.
PA UCC Permit Requirements — When Does Window Replacement Need a Permit?
Pennsylvania's Uniform Construction Code (PA UCC) governs residential building work statewide, with local enforcement handled by individual townships. For window work in Delaware County, here is how the permit requirement typically breaks down:
- Like-for-like replacement (same opening, same size): Permits generally not required in most Delaware County townships. This is the most common scenario — removing an old window and installing a new one in the same rough opening.
- Enlarging or relocating an opening: Requires a permit. Any structural change to the opening — widening, lowering the sill, moving it to a different location — involves altering a load-bearing element of the exterior wall.
- New egress window in a bedroom or finished basement: Permits are required, and the window must meet IRC Section R310 egress specifications (minimum net clear opening area, height, width, and sill height). Delaware County building departments enforce these specifications for code compliance and for insurance purposes.
- Historic overlay districts: Some neighborhoods in Media Borough and other municipalities have historic overlay zoning. Window replacements in these areas may require a Certificate of Appropriateness from the local Historic Architectural Review Board (HARB) before permits are issued. We work in several of these districts and are familiar with the approval process.
Permit costs in Delaware County typically range from $100–$400 for residential window permits depending on the municipality and scope of work. Processing times range from 1–3 weeks for straightforward applications. ProBrothers handles permit applications for all work we perform — this is included as part of our service, not an add-on.
What Does Window Replacement Cost in Delaware County?
Cost ranges for Delaware County and the greater Philadelphia metro area, based on our project work and the Remodeling Magazine Cost vs. Value Report (Philadelphia metro):
| Tier | Window Type | Installed Cost (per unit) | Typical ROI at Resale |
|---|---|---|---|
| Budget | Vinyl, standard size, basic Low-E double-pane | $400–$700 | 65–70% |
| Mid-Range | Premium vinyl or fiberglass, custom sizes, warm-edge spacer, triple-pane option | $700–$1,200 | 68–72% |
| Premium | Wood-clad, architectural grade, historic-profile match, bay/bow configurations | $1,200–$2,500+ | 55–65% (varies significantly by home value) |
| Costs above are installed (labor + material) for single-unit replacement in a standard opening, Delaware County 2025–2026. Bay, bow, or structural modifications price separately. Homes with non-standard or damaged openings will be higher. Request a free estimate for your specific project. | |||
The Remodeling Magazine data for the Philadelphia metro area shows mid-range window replacement recovering approximately 65–72% of cost at resale. That said, the comfort and energy cost reduction of replacing drafty single-pane originals in an older home often makes the financial argument before resale is ever a factor.
ProBrothers Window Projects in Delaware County
Two examples from our project work that illustrate how window selection actually plays out in real homes:
Project Case Study #1
BlackHorse House — Full Home Remodel, Media PA
A full home remodel in Media, Pennsylvania that included structural reconfiguration of the main entry and window placement. The original side entrance was relocated to the center of the facade, with new windows added symmetrically on either side. This is a case where window style was driven entirely by architectural intent, not just replacement — the new windows had to match the proportions of the restored facade and complement the entry door surround. We used double-hung vinyl windows with divided lite grilles to preserve the home's original character while meeting current energy efficiency standards. The rough-opening work required header reinforcement because the original framing had been built around the prior (off-center) door placement.
This project is one of 135+ ProBrothers has completed across Delaware County and the Main Line.
Project Case Study #2
Window Casing Project — Delaware County
A window casing and trim installation project focused on the finish work around window openings — a detail that has a significant impact on how new windows integrate with the surrounding interior. Window casing in older Delaware County homes often involves matching existing profile millwork, which requires custom milling or sourcing period-appropriate trim stock. Getting the casing right is as important as the window unit itself for the finished appearance.
Ventilation and Climate Considerations
Delaware County sits in Pennsylvania's mixed-humid climate zone — hot, humid summers and cold winters with significant freeze-thaw cycling. Window selection needs to account for both ends of the thermal spectrum.
Summer Ventilation
Casement and awning windows create a "scoop" effect, directing prevailing breezes into a room more efficiently than double-hung windows. In homes without central air, this can significantly improve comfort in upstairs rooms where heat accumulates. We often recommend casement windows on the side of a home that faces the prevailing southwest summer wind.
Winter Air Sealing
The most common source of winter heat loss in older Delaware County homes is not poor glass performance — it is air infiltration at the window perimeter. New windows installed with proper foam backing, backing rod, and exterior caulking can reduce drafts far more than a glass upgrade alone. Our installation process includes a full air-seal of the perimeter on every window we set.
Freeze-Thaw and Frame Performance
Pennsylvania's freeze-thaw cycling puts stress on window frames, especially where dissimilar materials meet (wood sill, vinyl frame, exterior casing). Fiberglass frames handle thermal cycling best; premium vinyl performs well. Wood frames require more maintenance to keep the seals intact over time.
Aesthetic Appeal and Home Value
Windows are one of the most visible elements of a home's exterior, and they have an outsized effect on curb appeal relative to their cost. A few things we pay close attention to:
- Proportion: Windows that are the wrong size for their opening — either too small or too large — look off even if the style is correct. We specify window dimensions based on the room's scale and the opening's relationship to adjacent architectural elements.
- Grille pattern: In colonial and craftsman homes throughout Delaware County, divided lite grilles (either true divided or simulated) maintain the historical rhythm of the facade. In contemporary additions, clean-line windows without grilles typically read better.
- Exterior color and finish: Window frame color should coordinate with the exterior trim scheme. We match or complement existing trim colors rather than defaulting to a stock white, particularly on homes with a strong architectural identity.
- Interior integration: New windows installed without matching interior casing look unfinished. We include casing work in our window project scoping by default — it is the only way the installation looks complete from inside.
On resale, updated windows are a visible signal of maintenance investment. Real estate agents consistently flag original single-pane or failed-seal double-pane windows as a negotiating point; new replacement windows remove that objection and frequently show up as a justification for asking price.
Frequently Asked Questions About Window Replacement
What window styles does ProBrothers most commonly install in Delaware County homes?
We most frequently install double-hung windows (ideal for Delaware County's colonial and craftsman housing stock), casement windows for side-facing or hard-to-reach openings, and picture windows in living rooms where ventilation is secondary to light. The right style depends on your home's original window count, rough-opening dimensions, and how each room is used.
Does window replacement in Delaware County require a permit?
Like-for-like replacement in the same opening usually does not require a permit in most Delaware County townships. However, you will need one if you are enlarging or relocating an opening, creating a new egress window in a bedroom or finished basement, or working on a structure in an historic overlay district. ProBrothers assesses permit requirements as part of every estimate — at no additional charge.
What does window installation cost in Delaware County, PA?
Budget installations (vinyl, basic Low-E double-pane) typically run $400–$700 per unit installed. Mid-range (premium vinyl or fiberglass, custom sizes) runs $700–$1,200 per unit. Premium (wood-clad, architectural grade, bay/bow configurations) starts at $1,200 per unit. Homes with non-standard rough openings — common in pre-1970 Delaware County homes — may require additional framing work. Request a free estimate for your specific project.
What is the difference between double-pane and triple-pane windows for Pennsylvania's climate?
Double-pane windows with Low-E coating handle most Delaware County homes well — they significantly reduce heat loss in winter and solar gain in summer. Triple-pane windows add a third layer of insulating gas, which helps in very exposed locations (large north-facing walls, unshielded second stories). For most interior or partially-shielded openings, the cost premium of triple-pane does not produce proportional energy savings. We make this recommendation based on each opening's orientation and your home's overall energy profile.
How do I choose the right window materials for my home?
Vinyl frames are low-maintenance and cost-effective — a reliable choice for most Delaware County homes. Fiberglass offers superior dimensional stability and handles Pennsylvania's temperature swings well. Wood-clad windows preserve the original character of pre-1970 homes and are often required in historic overlay districts. We match the material recommendation to your home's age, architectural style, and long-term maintenance preference.
How long does window installation take?
Most standard window installations take 1–3 days depending on the number of units and complexity. Homes with non-standard rough openings (common in Delaware County homes built before 1970) may require additional time for framing adjustments. We provide a clear timeline at the estimate stage so there are no surprises.
Ready to Replace Your Windows?
Free estimates within one business day. ProBrothers serves Media, Springfield, Swarthmore, Broomall, Upper Darby, and across Delaware County and the Main Line. Our team provides rough-opening assessment at the estimate stage — so there are no surprises when windows arrive.
