Why Replace Your Windows
Windows are the part of your home most exposed to weather and most likely to be original to a 30+ year-old build. Across Bergen, Passaic, Hudson, and Essex County we routinely see homes still running their original 1980s-90s aluminum or early-generation vinyl windows — and the heating bills, drafts, and condensation problems that come with them.
Modern double-pane and triple-pane glass with low-E coatings and argon-gas fill insulates 2–4 times better than the windows they replace. The U.S. Department of Energy estimates that replacing single-pane windows with ENERGY STAR double-pane saves an average NJ homeowner 6–13% on combined heating and cooling — and that doesn't count the comfort improvement of eliminating cold drafts in winter and hot radiation in summer.
The other reason to replace is the one nobody talks about: failed window seals (the “foggy windows” problem) and rotted wood frames in older homes. These don't just look bad — they let water and air into the wall cavity, causing damage that compounds. Once a window seal fails it doesn't recover, and once a wood frame rots it spreads to the framing behind it. Replacement at the right time prevents thousands in hidden damage repair later.
Window Styles We Install
Every style from straight double-hung replacements to code-compliant egress windows and custom bay-and-bow assemblies.
Double-hung
Two operable sashes that slide up and down. The most common residential style in NJ — looks at home on colonials, Capes, and most older homes. Tilt-in sashes make cleaning easy. Available in every material we carry.
Casement
Hinged on one side, crank out like a door. Best air-seal of any operable window type — there's a compression seal all the way around when closed. Great for kitchens, bedrooms, and any wall where you want maximum airflow without a screen tear.
Awning
Hinged at the top, swing out at the bottom. Good for bathrooms, basements, and high wall placements because they keep rain out when open. Often paired with picture or casement windows in a multi-unit assembly.
Slider (gliding)
Horizontal slide between two sashes. Great for wide-but-short openings (over kitchen sinks, basement egress). Easier to operate than double-hung for elderly homeowners or where reach is limited.
Picture (fixed)
Non-operable, single large pane. Maximum view and best insulation value (no operable seal to fail). Often the center of a 3-piece assembly with operable casements on each side.
Bay & bow
Multiple windows angled outward from the wall, creating a bumped-out interior bench/sill. Adds interior square footage and exterior architectural character. Custom roof or copper roof cap available on bay windows.
Egress (basement)
Required by NJ code for any finished basement bedroom — minimum 5.7 sq ft opening, 24 inch clear height, 20 inch clear width, sill ≤ 44 inches from floor. We cut the masonry opening, install the window, and build the proper window well per code.
Specialty shapes
Round-tops, octagons, half-rounds, eyebrows, and quarter-circles. Common on Victorian, Tudor, and custom architectural homes. Custom-ordered to match the exact opening; longer lead times.
Window Materials Compared
Four frame materials, each with a real use case. Our quote lays out the trade-offs honestly — none of this “everyone should buy fiberglass” pitch.
| Material | Pros | Trade-offs | Best for |
|---|---|---|---|
| Vinyl | Affordable, maintenance-free, excellent insulator, widest color and option range, no painting ever | Doesn't accept paint changes later, frames look slightly bulkier than fiberglass | Most NJ homes — the default choice for ~70% of replacement projects |
| Fiberglass | Stronger than vinyl, narrower frame profile, accepts paint, expands/contracts at same rate as glass (longer seal life) | Costs ~30–50% more than vinyl, fewer color options on factory finishes | Homeowners staying long-term who want longer expected service life |
| Vinyl-clad wood | Real wood interior (paint or stain to match trim), vinyl exterior (no maintenance), warmest look | Premium pricing, longer lead times, interior maintenance over decades | Higher-end homes where interior aesthetics matter and trim is paint-grade |
| Aluminum | Strong, thin frame profile, never rots | Poor insulator (conducts cold straight into your home), rarely the right choice for NJ climate | Limited residential use — sometimes specified for modern architectural homes |
Energy Efficiency — What the Numbers Actually Mean
Every window we install comes with an NFRC sticker showing four numbers. Here's how to read it.
U-Factor (lower is better)
Measures how well the window stops heat from escaping. NJ ENERGY STAR requires ≤ 0.27. Old aluminum single-pane windows are often 1.10+ — meaning they leak heat 4x faster than a modern ENERGY STAR window.
SHGC (Solar Heat Gain Coefficient)
How much solar heat the window lets through. NJ ENERGY STAR requires ≤ 0.40. In hot summers a lower SHGC means less AC load; in winter a slightly higher SHGC on south-facing windows actually helps with passive solar heat — we balance this per home.
Air Leakage (lower is better)
Measured in cubic feet per minute per square foot. Modern windows are typically 0.10–0.30. The lower this number, the less you feel a draft when sitting next to the window in February.
VT (Visible Transmittance)
How much visible light comes through (higher is brighter). Premium low-E coatings can dim the room slightly — worth knowing if natural light is a priority.
Brand Alternatives — What Most Window Companies Won't Tell You
Renewal by Andersen runs the loudest TV ads and the most aggressive in-home pitch in our market — so for many NJ homeowners, that's the default brand they consider first. The truth most window companies won't tell you: Renewal by Andersen is a premium-priced replacement-only product line, not the same thing as Andersen's builder-direct line (which is what new homes get), and it's typically priced 30–60% higher than comparable product from Pella, Marvin, or top-tier vinyl lines like Polaris, Sunrise, or Okna. The high-pressure same-day-pricing pitch is the giveaway: real value doesn't need to be closed in one night.
Here's how the actual market looks once you ignore the ad spend:
| Brand / Line | Tier | Best for |
|---|---|---|
| Renewal by Andersen (Fibrex) | Premium retail | Brand-recognition buyers who want the marketed warranty experience; ready to pay the premium for the name. |
| Andersen 100 / 200 / 400 Series | Mid to premium | Buyers who want Andersen quality without the Renewal by Andersen markup. Wood and Fibrex options. |
| Pella (Lifestyle, 250, 350, Reserve) | Mid to premium | Strong vinyl + fiberglass + wood options across price tiers. Major direct competitor to Andersen on quality. |
| Marvin (Essential, Elevate, Signature) | Premium | Higher-end wood and fiberglass for architecturally significant homes. Best fiberglass operation on the market. |
| Sunrise Restorations / Restoration Vista | Premium vinyl | Top-tier vinyl with thicker frames, better seal life, and longer warranties than mass-market vinyl. NJ winters favor heavier vinyl lines. |
| Polaris UltraWeld / ThermalWeld | Premium vinyl | Lifetime-warranty vinyl, locally manufactured in PA so shorter lead times. Strong value proposition vs. Renewal by Andersen. |
| Okna 800 / 8000 series | Premium vinyl | High-end vinyl, very low U-factor performance, popular with NJ remodeling contractors who've done their homework. |
| Window World / Champion / Universal | Budget retail | Lower-tier vinyl, big-volume installers. Lower upfront cost but shorter expected service life; thinner warranties. |
We are a contractor, not a single-brand showroom. That means we can put a Pella, an Okna, a Polaris, and a budget vinyl side-by-side on your quote and let you compare what your money actually buys at each tier — instead of being told only one brand exists. Bring us a Renewal by Andersen quote and we'll show you what you'd pay for comparable or better windows from a different line.
Our Installation Process
Free in-home estimate
We measure every opening, photograph existing conditions (interior and exterior), note any rot or framing issues, ask about your priorities (energy efficiency, sound reduction, look, budget), and write a detailed quote. No high-pressure 'sign tonight' nonsense.
Manufacturer & options selection
We walk you through the brand options we carry, glass packages (double vs triple pane, low-E coatings, argon vs krypton fill, obscure glass for bathrooms), grille patterns, and hardware finishes. Samples on site so you can compare side-by-side.
Order & lead time
Standard vinyl windows typically ship in 2–4 weeks. Premium fiberglass and wood-clad lines run 4–8 weeks. Custom shapes and oversized units can be 8–12 weeks. We schedule install once your order is confirmed in the warehouse.
Day-of install
Crew arrives, protects floors and furniture with drop cloths and plastic, removes existing windows one or a few at a time (your house is never wide open for hours), installs new units with proper flashing tape and insulation, finishes interior trim and exterior caulking. Full cleanup before we leave.
Final walk-through & warranty
We operate every window with you, demonstrate the locks, tilt-in cleaning, and screen removal. You sign off, we register the manufacturer warranty in your name, and we hand you the workmanship warranty on letterhead.
Related
Just one or two broken windows?
If you have a single failed window — a foggy IGU, cracked glass, won't close, draft — repair is usually faster and cheaper than replacement. We do glass-only repairs, IGU swaps, sash and balance repair, and weatherstripping renewal.
Window Repair Services →Window Installation — FAQ
How do I know if I really need new windows?
There are five signs that almost always justify replacement: (1) drafts you can feel with your hand near closed windows in winter, (2) condensation or fog between the panes (failed insulated glass unit seal), (3) windows that won't stay open or won't close, (4) visible water damage on the interior trim, (5) noticeably higher heating/cooling bills with no other explanation. If you have any of these on more than half your windows, replacement makes sense. If only one window is bad, a repair is often the right call — see our window repair page.
How long does a typical window replacement take?
Most full-house window replacements take 1–3 days depending on how many windows and whether they're pocket installs (faster) or full-frame replacements (more labor). A single window swap is usually under 2 hours including removal, install, insulation, interior trim, and exterior caulking. Custom-order or larger windows (bay, bow, picture windows over 60 inches) can extend the schedule.
What's the difference between pocket replacement and full-frame replacement?
Pocket replacement (also called insert replacement) installs the new window inside the existing wood frame — keeps the interior trim untouched, faster install, lower cost. Full-frame replacement removes the entire existing frame, brick mold, and exterior trim down to the rough opening — more invasive, more expensive, but lets us address rotted framing, properly flash the rough opening, and gain a slightly larger glass area. Pocket installs are right for ~70% of NJ homes; full-frame is the right call when there's hidden rot or you're upgrading to a different window size.
Vinyl, fiberglass, wood, or aluminum — which window material is best?
For most NJ homes vinyl is the best balance of price, insulation value, and zero-maintenance — that's why it's the dominant material in the U.S. market. Fiberglass costs more but lasts longer in our freeze-thaw climate and accepts paint better. Aluminum is rarely the right call for residential (poor insulator). Wood and wood-clad windows are beautiful but require more maintenance and cost roughly 2x vinyl. We carry vinyl, fiberglass, and vinyl-clad wood lines and can quote whichever fits your project.
What does ENERGY STAR mean for windows in New Jersey?
ENERGY STAR certifies windows that meet specific U-factor and Solar Heat Gain Coefficient (SHGC) targets for your climate zone. New Jersey is in the North-Central climate zone, requiring U-factor ≤ 0.27 and SHGC ≤ 0.40 for certification. ENERGY STAR windows typically save 6–13% on heating and cooling vs. older single-pane windows. There are also occasional federal tax credits for ENERGY STAR upgrades — we'll let you know what's available at the time of your project.
Do you handle older homes with lead paint properly?
Yes. EPA RRP (Renovation, Repair, and Painting) certification is federal law for any contractor disturbing painted surfaces in homes built before 1978. We're RRP certified — that means lead-safe work practices, dust containment, and proper disposal. Roughly half the homes in older NJ neighborhoods (Garfield, Clifton, Passaic, Paterson, Jersey City, Hoboken) fall in this category. Skipping RRP isn't just dangerous to your family — it's a federal violation that follows the contractor and the homeowner.
Do you remove and dispose of the old windows?
Yes — every quote includes removal of the existing windows, hauling away of the old units, and disposal/recycling. We don't leave a pile of old windows in your driveway, and we don't charge extra dump fees after the fact. The old windows go to certified recycling facilities for glass and aluminum/vinyl frame recycling where possible.
What kind of warranty comes with new windows?
Two warranties stack: the manufacturer warranty on the window itself (typically 20–30 years on the frame and seal; 10–20 years on hardware) and our written workmanship warranty on the installation (5–10 years depending on scope). The manufacturer warranty is what covers a failed IGU seal or hardware failure; our warranty is what covers any installation defect — leaks, drafts, trim issues. Both warranties are registered in your name at the time of install.
Free In-Home Window Estimate
We come out, measure, walk you through your options, and email you a written quote. No high-pressure pitch, no “today only” pricing games.