Stanek Windows
- Company typePrivate
- Founded1953
- HeadquartersMacedonia, United States
- Headcount101–250
- GTM typeB2C
- OfferingHardware or Manufacturing
Stanek Windows firmographics
Firmographics- Name
- Stanek Windows
- Legal name
- Great Day Improvements, LLC
- Website
- https://stanekwindows.com
- Company type
- Private
- Founded year
- 1953
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Ownership category
- akta.pro rank
Stanek Windows industry classification
Industry- Product category
- Vinyl Replacement Windows and Doors
- NAICS
- Blind and Shade Manufacturing (337920), Window Treatment Retailers (449122)
- SIC
- Glass Products, Made Of Purchased Glass (3231)
- akta.pro primary industry
- Custom Window & Door Fabrication & Replacement (HSAPAJAI)
- akta.pro secondary industries
- Window Replacement (Residential) (HSAPAJAA), Windows (IMADAIAC), Sunrooms, Screen Rooms & Enclosures (HSAPALAF), Window Treatments & Shading Systems (Blinds, Shades, Awnings) (IMADAIAN)
Keywords
Where Stanek Windows is headquartered
LocationHeadquarters
- HQ city
- Macedonia
- HQ country
- United States
- HQ region
- North America
Offices5 records
Markets served
Stanek Windows business model
Business model- GTM type
- B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Window and Door Sales: One-time purchase of custom vinyl replacement windows and patio/entry doors. Products are sold directly to consumers through in-home consultations. All windows are custom designed and custom manufactured for each home.
- Installation Services: Professional installation included as part of the customer purchase, handled by local, experienced installation teams who complete the entire replacement process from removal of old windows to final installation.
- Sunroom Products: Patio Enclosures brand sunrooms and screen rooms offered through Stanek Windows locations, including three-season rooms, four-season rooms, solariums, and related products.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Custom Window Pricing |
| Other | Multi-year contract | Financing Options |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels9 records
Stanek Windows product offering
Product offeringCore offering
Stanek Windows designs, manufactures, installs, guarantees, and services premium custom vinyl replacement windows and patio/entry doors directly to homeowners without middlemen. The company also offers complementary products such as sunroom enclosures (via the Patio Enclosures brand), custom window treatments, and extensive customization options including 25+ specialty shapes, multiple glass packages, hardware finishes, and interior/exterior color choices.
Product overview
Stanek Windows, a subsidiary of Great Day Improvements, LLC, offers a comprehensive portfolio of custom-built premium vinyl replacement windows and doors. The core product line includes vinyl replacement windows available in multiple styles (double-hung, sliding, awning/casement, bow/bay, and custom shapes), complemented by patio doors, entry doors, and sunroom enclosures through the Patio Enclosures brand. The company designs, manufactures, installs, guarantees, and services all products directly. Extensive customization options include FlexScreen technology, Comfort-Gard energy-efficient glass, designer glass, woodgrain interiors, hardware finishes, and interior/exterior color options. Blinds and shades are offered as add-on window treatments. The complete offering is characterized by custom manufacturing, energy efficiency (ENERGY STAR compliant), and full-service installation without middlemen.
Differentiator
Problem solved
Functional benefit
Quantifiable outcome
- Reduce heating/cooling costs by up to 25%
- +3 more outcomes
Companies that use Stanek Windows
Customer profileNamed customers10 records
Segments3 records
Ideal customer profiles2 records
Stanek Windows technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Stanek Windows partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Patio EnclosurescorePatio Enclosures is another brand under Great Day Improvements family of companies. Stanek Windows location pages reference and sell Patio Enclosures sunrooms, screen rooms, three-season rooms, four-season rooms, solariums, and porch enclosures. The brands cross-promote through Stanek Windows' website and local branches.
Scale indicators7 records
Recent moves6 records
Expansion highlights5 records
Stanek Windows competitors and assessment
Company assessmentDirect peers
- Pella Corporation: National manufacturer of windows and doors (vinyl, wood, fiberglass) with direct-to-consumer and dealer channels. Competes head-to-head with Stanek in custom vinyl replacement windows and patio/entry doors, and is a direct comparison point in Stanek's own competitive comparison content.
- Andersen Corporation (Renewal by Andersen): One of the largest U.S. window and door manufacturers; its Renewal by Andersen division focuses on full-service replacement window sales and installation—a near-identical go-to-market model to Stanek's consultative in-home estimate motion.
- Simonton Windows: Vinyl window and patio door manufacturer specializing in replacement and new construction, with strong dealer relationships in the Midwest and East. Closely comparable to Stanek in product mix (vinyl replacement focus) and regional overlap.
- Milgard Windows & Doors: Vinyl, fiberglass, and aluminum window and patio door manufacturer serving Western U.S. markets with builder and dealer channels. Directly comparable to Stanek on vinyl replacement products but more regionally concentrated.
- Marvin Windows and Doors: Premium window and door manufacturer offering wood, fiberglass, and clad-wood products for replacement and new construction. Comparable to Stanek's higher-end positioning on energy efficiency and customization, though more skewed toward wood/composite materials.
- Window World: Largest U.S. vinyl replacement window franchise with hundreds of locally-owned locations and value-oriented positioning. Directly comparable to Stanek on product, customer, and franchise/branch model, though typically priced below Stanek's premium tier.
- Champion Window: Direct-to-consumer manufacturer and installer of replacement windows, sunrooms, and patio rooms with company-owned locations across the U.S. Sister brand to Stanek under Great Day Improvements but operates as an independent competing brand; comparable on product, sales motion, and sunroom cross-sell.
- Universal Windows Direct: Replacement window and siding company with company-owned locations serving multiple U.S. markets. Sister brand to Stanek under Great Day Improvements; competes in the same vinyl replacement window category with a similar direct-to-consumer in-home sales motion.
Broad incumbents
- JELD-WEN: Large publicly-traded manufacturer of windows, doors, and related building products with broad dealer and home-center distribution. Overlaps with Stanek on vinyl replacement windows and patio doors but serves a wider portfolio of customers beyond the replacement-focused consultative channel.
- Ply Gem (Cornerstone Building Brands): Large manufacturer of vinyl windows, siding, and other exterior building products with broad builder and dealer channels. Comparable to Stanek on vinyl window manufacturing but operates as a broad incumbent serving multiple segments beyond replacement-focused consultative retail.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Stanek Windows social profiles
Digital presenceStanek Windows financial estimates
Financial estimateRevenue estimate
Valuation estimate
Stanek Windows leadership team
Management profileNumber of profiles
Profiles1 record
Stanek Windows funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Stanek Windows M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Stanek Windows
What does Stanek Windows do?
Stanek Windows designs, manufactures, installs, guarantees, and services premium custom vinyl replacement windows and patio/entry doors directly to homeowners without middlemen. The company also offers complementary products such as sunroom enclosures (via the Patio Enclosures brand), custom window treatments, and extensive customization options including 25+ specialty shapes, multiple glass packages, hardware finishes, and interior/exterior color choices.
Is Stanek Windows a public or private company?
Stanek Windows is a private company. It is classified as corporate owned and is currently operating.
When was Stanek Windows founded?
Stanek Windows was founded in 1953. It employs 101 to 250 people.
Where is Stanek Windows based?
Stanek Windows is headquartered in Macedonia, United States, in the North America region.
How does Stanek Windows make money?
Three revenue lines are on record. Window and Door Sales are the primary driver. The others are installation Services and sunroom Products.
Who are Stanek Windows's main competitors?
Direct peers on record are Pella Corporation, Andersen Corporation (Renewal by Andersen), Simonton Windows, Milgard Windows & Doors, Marvin Windows and Doors, Window World, Champion Window and Universal Windows Direct. Broad incumbents are JELD-WEN and Ply Gem (Cornerstone Building Brands).
Does Stanek Windows have an API?
No public API is recorded for Stanek Windows.
What industry is Stanek Windows in?
Stanek Windows's product category is Vinyl Replacement Windows and Doors. Its primary akta.pro industry code is HSAPAJAI, Custom Window & Door Fabrication & Replacement, with a secondary code of HSAPAJAA, Window Replacement (Residential). Its NAICS code is 337920 and its SIC code is 3231.