What Simonton Windows does

Simonton Windows, founded in 1946 and headquartered in Virginia, manufactures premium vinyl replacement windows and patio doors under the legal entity Simonton, LLC. The company is a core operating subsidiary of Cornerstone Building Brands, which is described as North America's largest manufacturer of vinyl windows and doors. Simonton's product portfolio spans multiple window collections (premium 5500, DaylightMax, Madeira, Brickmould 600, Contractor, ComfortSmart, StormBreaker Plus for coastal impact zones, and others) and patio door collections (Inovo, Narrow Frame, MaxView multi-slide, Contemporary, French Sliding, Premier), covering window styles from double hung and casement to specialty shapes and bay/bow.

The company's technical differentiation rests on proprietary glass and hardware systems, including ProSolar Low-E glass variants, Intercept and Super Spacer thermal spacer systems, SafePoint and SafePoint Max impact-resistant laminated glass with ASTM Missile C/D and HVHZ certification, AutoSense automatic locking on DaylightMax windows, and the WhisperGlide rolling track system on MaxView patio doors. Product certifications span ENERGY STAR (including Most Efficient designations in 2024 and 2025), AAMA Gold, California Title 24, and Good Housekeeping Seals across multiple product lines. Manufacturing is custom-to-order within the United States.

Commercially, Simonton operates an exclusive B2B2C distribution model: products are sold only through authorized contractors, retail store partners, and regional distributors — never directly to consumers via e-commerce. The ProNetwork contractor loyalty program provides purchase rewards and lead generation to its installer base. Pricing is quote-based through dealers. End demand comes from residential homeowners across replacement/retrofit and new-construction use cases. Consumer-facing brand investment is anchored by an HGTV 'Fixer to Fabulous' brand ambassadorship with Dave & Jenny Marrs, supported by 'The Window Seat' content blog and active presence across six social platforms.

Name

Simonton Windows

Legal name

Simonton, LLC

Website

https://simonton.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

251–500 employees

Short description

Simonton Windows is a U.S. manufacturer of premium vinyl replacement windows and patio doors, operating as a core subsidiary of Cornerstone Building Brands. It sells exclusively through authorized contractors, retail partners, and regional distributors to residential homeowners for replacement and new-construction projects.

Ownership category

akta.pro rank

Product category

Vinyl Replacement Windows and Patio Doors

NAICS

Glass Product Manufacturing Made of Purchased Glass (327215), Glass and Glass Product Manufacturing (32721)

SIC

Glass Products, Made Of Purchased Glass (3231)

akta.pro primary industry

Windows (IMADAIAC)

akta.pro secondary industries

Window Replacement (Residential) (HSAPAJAA), Custom Window & Door Fabrication & Replacement (HSAPAJAI)

Keywords

• Vinyl replacement windows
• Patio door manufacturing
• Impact-resistant windows
• Energy efficient windows
• Residential window collections

Headquarters

HQ city

Cary

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D

Revenue model

1. Windows and Doors Sales: Simonton generates revenue through the sale of vinyl replacement windows and patio doors. Products are sold exclusively through a network of contractors, retail stores, and distributors as a B2B2C model. The company manufactures custom-made products to order.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Simonton Windows manufactures premium vinyl replacement windows and patio doors for residential applications. Products are custom-made to order and sold exclusively through a network of authorized contractors, retail stores, and distributor locations using a B2B2C distribution model. The portfolio spans multiple window collections (5500, StormBreaker Plus, Madeira, DaylightMax, etc.) and patio door lines (Inovo, MaxView, Contemporary, French Sliding, etc.) with proprietary glass technologies.

Product overview

Simonton Windows is a vinyl window and patio door manufacturer offering replacement and new construction products across multiple collections. The product portfolio includes window styles (double hung, single hung, sliding, casement, awning, picture, garden, specialty shapes, bay/bow) and patio door styles (sliding and multi-slide). Window collections range from premium (5500, Madeira, DaylightMax, 6500, 6100) to mid-tier (StormBreaker Plus, Brickmould 600/300, Contractor, ComfortSmart, Asure, HarborLight, Premium, Pro) to entry-level, with specialized coastal impact-resistant lines (StormBreaker Plus). Patio door offerings include Inovo, Narrow Frame, MaxView (multi-slide), Contemporary, French Sliding, and Premier collections. All products feature premium vinyl construction with various glass packages, color options, hardware finishes, and grille patterns. The company is part of Cornerstone Building Brands and holds ENERGY STAR certifications across product lines.

Differentiator

Problem solved

Functional benefit

Products and services

• 5500 Collection Windows Premium vinyl replacement and new construction windows with traditional styling, featuring beveled frame design, advanced energy efficiency, and ENERGY STAR Most Efficient recognition for select styles with optional triple-pane glass.
• StormBreaker Plus Collection Windows Hurricane-rated and coastal impact-resistant vinyl windows featuring SafePoint impact-resistant laminated glass, certified to meet Missile C and D specifications for Florida and Texas coastal requirements.
• Brickmould 600 Collection Windows Residential windows combining traditional wood window appearance with durable vinyl construction, featuring multi-tiered brickmould frame and versatile installation options for brick, siding, or both.
• Contractor Collection Windows Entry-level welded frame vinyl windows designed for new construction with durable welded frame and sash edges, integral nailing fin, and J-channel for precise installation.
• DaylightMax Collection Windows Slim frame windows with narrow profile design offering maximum natural light and expansive views, available with dramatic black interior and exterior laminate finishes and AutoSense automatic locking system. AAMA Gold certified.
• Madeira Collection Windows Wide frame vinyl windows offering traditional wood window elegance with 3-1/4 inch frame design, advanced glass options, and ENERGY STAR Most Efficient recognition for select styles.
• Inovo Sliding Patio Door Premium sliding patio door with easy-glide monorail operation, superior energy efficiency, available with bold exterior finishes, interior woodgrain laminates, and blinds between glass options.
• Narrow Frame Sliding Patio Door Slim profile sliding patio door with corrosion-resistant rollers, multi-tiered brickmould frame option, and AAMA Gold certified performance for durability and energy efficiency.
• MaxView Multi-Slide Patio Door Multi-panel sliding patio door with WhisperGlide system, available in bypass, pocket, and bi-part configurations, customizable up to 10 feet high or 30 feet wide with Super Spacer technology.
• Contemporary Sliding Patio Door Narrow frame sliding patio door with expansive sightlines, low profile frame design, and contemporary styling that maximizes natural light while maintaining energy efficiency.
• French Sliding Patio Door Traditional French door design with broad stile and rail construction reminiscent of wood doors, combined with space-saving sliding operation for convenient outdoor access.
• Premier Patio Doors Premium patio door collection featuring sophisticated design, smart technology integration, and durable finishes for enhanced interior and exterior aesthetics.

Quantifiable outcome

• ProSolar Low-E glass deflects up to 72% of damaging UV light; ProSolar Shade blocks up to 92%; laminated glass blocks up to 99%
• +2 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Three partnerships are on record, tiered minor and core.

• A&M Roofing – SpringfieldminorChannel Partner/ Reseller/ Distributor · 23 December 2025A&M Roofing – Springfield, a locally owned roofing company serving Northern Virginia for nearly two decades, became a certified installer of Simonton windows. The certification enables the company to offer enhanced warranty coverage across exterior home improvement categories including windows and doors. The company maintains an A+ rating with the Better Business Bureau and serves residential properties throughout Northern Virginia counties.
• Dave & Jenny MarrscoreGTM or Marketing PartnerHGTV's 'Fixer to Fabulous' hosts Dave & Jenny Marrs serve as brand ambassadors for Simonton Windows & Doors. They appear in promotional content, blog posts, and marketing materials showcasing Simonton products in renovation projects, helping drive consumer awareness and demand to the contractor channel.
• Cornerstone Building BrandscoreStrategic or Co-development PartnerSimonton is a business unit of Cornerstone Building Brands, North America's largest manufacturer of vinyl windows and doors. The parent company provides manufacturing scale, distribution infrastructure, and corporate support across multiple building product brands.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Andersen Windows & Doors: One of the largest North American window and door manufacturers serving both new construction and replacement/remodel markets across wood, fiberglass, and composite lines. Direct competitor to Simonton in the residential window replacement category with overlapping dealer/contractor distribution.
• Pella Corporation: Privately held manufacturer of windows and patio doors across wood, fiberglass, and vinyl lines serving residential replacement and new construction. Closely comparable product portfolio, contractor/dealer distribution model, and target homeowner segments.
• JELD-WEN: Publicly traded global manufacturer of windows, doors, and related building products with major U.S. residential window offerings including vinyl lines. Directly comparable on product category, channel mix, and replacement-market focus.
• Marvin Windows and Doors: Family-owned manufacturer of premium wood, fiberglass, and clad windows serving residential replacement and new construction. Comparable in residential window and patio door manufacturing, but skews more premium/specialty than Simonton's vinyl-centric offering.
• MI Windows and Doors: Major U.S. vinyl window and patio door manufacturer serving new construction and replacement through dealer and distributor channels. Highly comparable product mix, material focus (vinyl), and customer segments to Simonton.
• PGT Innovations: Manufacturer of impact-resistant windows and doors, particularly strong in Florida coastal and hurricane-zone applications. Comparable to Simonton's StormBreaker Plus line on impact-rated product positioning and code-driven specification.
• Atrium Windows and Doors: Vinyl and aluminum window and patio door manufacturer serving U.S. residential new construction and replacement markets. Comparable vinyl product platform and distributor-led channel model.
• Champion Windows: U.S.-based manufacturer and direct installer of replacement windows, sunrooms, and patio doors. Comparable on replacement-window focus and vinyl construction, though Champion emphasizes a direct-to-consumer installation model.
• Window World: Largest U.S. replacement window franchise network with a vinyl-centric product offering sold direct to homeowners. Comparable replacement-window focus, vinyl product platform, and U.S. homeowner customer base.

Broad incumbents

• Cornerstone Building Brands: Parent company of Simonton and the largest North American manufacturer of vinyl windows and doors, with a broad portfolio of building product brands. Overlapping but broader portfolio than Simonton's window/door specialty.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/user/simontonwindows
• Facebookfacebook.com/SimontonWindows
• LinkedInlinkedin.com/company/27341
• Instagraminstagram.com/simonton_windows
• Pinterestpinterest.com/simontonwindows
• Xx.com/simontonwindows

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Simonton Windows