# Renewal by Andersen® Windows Review 2026: Is Fibrex® Worth It?

> Independent review of Renewal by Andersen® replacement windows. Fibrex® composite explained, J.D. Power rating, warranty, and pricing.



Updated July 2026  ·  Independently reviewed by RemodelyourHome.com

Renewal by Andersen® (RbA) is the custom window and door replacement division of Andersen Corporation, the largest window manufacturer in North America. Unlike the parent brand sold at Home Depot and Lowe's, RbA products are available exclusively through RbA-branded replacement dealers — making it a premium, appointment-based service focused entirely on replacement windows and patio doors.

RbA's defining product is **Fibrex®**, a patented composite frame material made from 50% reclaimed wood fiber and 50% thermoplastic polymer, developed in 1992. No other manufacturer offers Fibrex®. This single material distinction drives most of the brand's competitive positioning — and most of its premium price.

★★★★★

4.9

6,296 reviews

Recommended

Scope: Google — Renewal by Andersen of NJ/NY Metro (Cranford, NJ), one regional listing we located, verified August 2026

## What Are the Pros and Cons of Renewal by Andersen?
Renewal by Andersen makes its own Fibrex® composite windows and fits them with Certified Master Installers, which is why the glass carries 20 years and the labor two. The trade-off is time: because every unit is built to your opening, the job runs longer than a stocked-vinyl replacement. It rates 4.9★ across 6,296 reviews at the listing we verified.

### Pros

- Entry and patio doors also built with Fibrex® framing, for the same thermal and durability profile as their windows
- Fibrex® frame: 2× stronger than vinyl, better thermal performance than aluminum
- Custom-made to within 1/16″ — no off-the-shelf sizing
- J.D. Power #1 customer satisfaction 6 consecutive years (window/patio door manufacturers)
- Energy Star Partner of the Year 2024 Sustained Excellence Award
- Nation’s Best Warranty Coverage: 20yr glass / 10yr frames & hardware / 2yr install — no coastal or altitude restrictions
- Labor and color fade covered under warranty
- Professional installation by Certified Master Installers (RbA-employed, not subcontracted)

### Cons

- Custom-fit pricing: $800–$1,500+ per window — reflects Fibrex manufacturing and Certified Master Installer labor
- Pricing provided during the in-home design consultation — not available online or over the phone
- 6–12 week manufacturing lead time — windows are custom-built to your home's specific dimensions
- Replacement windows only — designed for existing homes, not new construction
- 50+ standard Fibrex colors — fewer custom paint options than hand-painted wood frames

## What Does Renewal by Andersen Offer, and How Confident Are We?

Here is what we hold on Renewal by Andersen, at a glance: what they cover, how they price and finance work, the materials they install, and where their customers say they fall short. Every row comes from our brand research file. Where that file is blank, no row appears — we would rather show you less than fill a gap with a guess.

| Customer rating | 4.9★ from 6,296 reviews — Google — Renewal by Andersen of NJ/NY Metro (Cranford, NJ), one regional listing we located, verified August 2026 |
| --- | --- |
| Services covered | Windows |
| Pricing & financing | RbA provides custom pricing during the in-home design consultation. Typical project investment: $12,000-$22,500 depending on product line and window dimensions.
Per-window range: $800-$1,500+ - reflects Fibrex manufacturing and Certified Master Installer labor
Pricing is available only through the in-home design consultation - not online or over the phone. This is how RbA tailors specifications to your home.
Typically 20-30% above mid-range competitors - homeowners who complete the process overwhelmingly report satisfaction with the finished result |
| Materials & products | Fibrex® - proprietary composite material made from reclaimed wood fiber and thermoplastic polymer
"Twice as strong as vinyl" (per RbA’s published material comparisons)
Conducts 400x less heat than aluminum
Will not rot, warp, or corrode |
| Strengths | • Fibrex® composite (exclusive to RbA)
• Certified Master Installers
• SolarZone™ glass system
• 20/10/2 warranty structure
• 4.9 stars / 6,296 reviews |
| Consider alternatives if | • You need windows installed on a short timeline - RbA’s custom manufacturing typically takes 6-12 weeks.
• Your project involves new construction rather than replacement. |
| Our confidence in this research | Medium — real individual reviews read, but sample size was small (3) relative to 6,296 total; broader topic tags corroborate the themes at scale. |

## What Warranty Does Renewal by Andersen Actually Offer?

These are the warranty terms Renewal by Andersen publishes, as recorded in our brand research, with the caveats attached to each. Warranty documents change and tiers differ by product line, so treat this as a starting point: ask for the specific document that applies to your quote, in writing, before you sign anything.

| Coverage | Caveat | Confidence |
| --- | --- | --- |
| Glass packages — 20 years — Seal failure, accidental breakage (1 occurrence per pane) | Part of the 20/10/2 warranty structure; voids if the window has been modified, painted (beyond approved process), or improperly maintained. | High |
| Non-glass components (Fibrex frames, sashes, hardware) — 10 years — Manufacturing defects under normal use | Voids if the window has been modified, painted (beyond approved process), or improperly maintained. | High |
| Installation / labor — 2 years — Workmanship by Certified Master Installer | — | High |
| Warranty is transferable to a subsequent homeowner; specific transfer terms on renewalbyandersen.com. | Library does not record the specific transfer terms. | High |

1 further warranty description for this company exists only in our own editorial notes, not in company-published terms, so it is not shown here.

## What Makes Fibrex® Different

Fibrex® is the core of RbA's value proposition. The material was developed at Andersen's research labs and has been refined over three decades. Key technical properties:

**Strength:** Fibrex® is approximately twice as strong as standard vinyl (PVC), allowing RbA to use thinner frame profiles. Thinner frames mean more glass area for the same rough opening — more light and better views.

**Thermal performance:** Fibrex® blocks thermal transfer 700 times better than aluminum. In triple-pane configurations, RbA windows achieve U-factors as low as 0.17 — well below the U-0.27 threshold for the most demanding northern Energy Star climate zone.

**Dimensional stability:** Fibrex® does not expand and contract with temperature changes the way vinyl does. This means tighter, more consistent seals over time, particularly in climates with large temperature swings.

Fibrex® is exclusively manufactured by Andersen Corporation and cannot be purchased separately or replicated by competitors. If you want Fibrex® frames, Renewal by Andersen® is the only source.

## How Does the Renewal by Andersen 4-Step RbA Process Work?

**1. Design Consultation:** An RbA design consultant visits your home to discuss style options, measure the rough openings, and review the product line. Pricing is provided during this visit after precise measurements are taken — the consultation allows RbA to tailor specifications to your home rather than quoting from a price sheet.

**2. Measure & Manufacture:** Each window is custom-built to your exact opening dimensions, to within 1/16 of an inch. Manufacturing takes 6–12 weeks depending on the product line and order volume.

**3. Professional Installation:** RbA calls its installation crews *Certified Master Installers* — employed directly by your local RbA dealer, not subcontracted. RbA says installation typically completes in as little as a day. The crew removes the old window, prepares the rough opening, installs the new unit, and finishes interior and exterior trim.

**4. Customer Care:** Post-installation follow-up and warranty support are handled through your local RbA dealer. The fully transferable warranty means you can pass coverage to a future buyer if you sell your home.

## What Products Does Renewal by Andersen Offer?

**200 Series:** Entry-level Fibrex®. Available in limited colors. Best for budget-conscious buyers who still want the Fibrex® advantage.

**400 Series:** Mid-tier. More color options, broader style availability, wood interior option.

**A-Series (Architectural):** Premium line. Broader customization, more glass configurations, highest thermal performance options. Available in the widest range of colors and sizes.

Window styles available across product lines: awning, bay/bow, casement, double-hung, picture, sliding, and specialty shapes. Patio doors: hinged (French-style) and sliding, in 200, 400, and A-Series configurations.

## What Does the Renewal by Andersen Warranty Cover?

RbA markets its coverage as “Nation's Best Warranty Coverage” — and the details support that claim:

**What is covered:** Fibrex® frames, glass seal failure (fogging), hardware, screens, color fade on exterior surfaces, and installation workmanship (labor included).

**Duration:** Non-prorated for the lifetime of the original purchaser, then transfers to subsequent owners (prorated).

**No carve-outs for:** High altitude, coastal salt air, or extreme climates — unlike many competitor warranties that exclude coastal or high-elevation installations.

**Maintenance requirement:** None required to maintain warranty coverage — no annual professional cleaning or sealing requirement.

## Should You Choose Renewal by Andersen?

**Best fit:** Homeowners in cold climates (Minnesota, Wisconsin, New England, the Mountain West) who plan to stay in the home long-term and want the highest thermal performance available in a replacement window. Also strong for homeowners with older aluminum windows seeking maximum insulation improvement.

**Consider alternatives if:** You need windows installed on a short timeline — RbA's custom manufacturing typically takes 6–12 weeks. You are in a mild climate where high-performance thermal specs are less critical. You prefer a company that provides pricing without an in-home visit.

**Price context:** RbA provides custom pricing during the in-home design consultation. Industry averages suggest $800–$1,500 per window installed for standard sizes — on a 15-window home, that is typically $12,000–$22,500 depending on product line and window dimensions.

Renewal by Andersen® and all other marks where denoted are trademarks of Andersen Corporation. © 2024 Andersen Corporation.

These are the questions homeowners ask most often before starting this project - what it costs, how long it takes, what a fair quote looks like and which details change the price. Each answer below is written to stand on its own, so you can read just the one you need.

### Is Renewal by Andersen worth the price?

For cold-climate homeowners replacing older aluminum or single-pane windows, Renewal by Andersen's Fibrex® frames deliver meaningful thermal performance improvements that hold up over time. The custom manufacturing process means projects typically take 6–12 weeks from order to installation — homeowners with an urgent timeline should discuss scheduling during the in-home design consultation.

### What is the Fibrex® composite in RbA windows?

Fibrex® is a proprietary composite frame material made from 50% reclaimed wood fiber and 50% thermoplastic polymer, developed by Andersen Corporation in 1992. It is twice as strong as standard vinyl (allowing thinner frames and more glass area) and blocks thermal transfer 700 times better than aluminum. Fibrex® is exclusive to Renewal by Andersen — no other manufacturer offers it.

### How long does a Renewal by Andersen installation take?

The in-home consultation and measurement takes 1–3 hours. Custom manufacturing takes 6–12 weeks — each window is built to your home's exact dimensions. The actual installation of a full home's windows typically takes 1–3 days.

### How do I get a Renewal by Andersen quote?

RbA does not publish prices publicly. You must request an in-home consultation through your local RbA dealer. An RbA design consultant visits your home, reviews your windows, and provides a quote. Pricing is not published publicly because each installation is custom to your home's specific window dimensions and product selections.

### What is Renewal by Andersen's warranty?

RbA’s “Nation’s Best Warranty Coverage” covers Fibrex® frames and hardware for 10 years, glass seal integrity for 20 years, and installation workmanship for 2 years — all non-prorated for the original purchaser. The warranty transfers to subsequent homeowners (prorated) and has no carve-outs for coastal, high-altitude, or extreme-climate installations.

### Does Renewal by Andersen install entry and patio doors, not just windows?

Yes. RbA builds entry doors and both hinged (French-style) and sliding patio doors with the same Fibrex® framing used in their windows, across the 200, 400, and A-Series product lines — backed by the same Nation's Best Warranty Coverage.

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Source: https://remodelyourhome.com/renewal-by-andersen-windows-review/