Cornerstone Building Brands
- Company typePrivate
- Founded2018
- HeadquartersCary, United States
- Headcount5,001–10,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What Cornerstone Building Brands does
Cornerstone Building Brands is the largest North American manufacturer of exterior building products, organized into three operating segments: Siding & Accessories (Surface Solutions), Windows & Doors (Aperture Solutions), and Metal Solutions (Shelter Solutions). The company produces vinyl windows, vinyl siding, stone veneer, metal roofing, metal wall systems, and related accessories under a portfolio of 25+ sub-brands including Ply Gem, Simonton, Mastic, MBCI, Harvey, Cascade, Mueller, and Metal Sales. Manufacturing operations span 93 production facilities with 106 warehouses, distribution centers, and retail outlets across the United States and Canada, supported by approximately 19,400 team members. The company is privately held by Clayton Dubilier & Rice (CD&R) and was formed in 2018 through the merger of NCI Building Systems and Ply Gem Building Products, both prior CD&R portfolio companies.
The company generates revenue through wholesale and distribution-based hardware sales of manufactured building products to three end markets: residential new construction, residential repair and remodel, and commercial/industrial construction. Products move through four go-to-market channels (Buildings, Commercial Metal Roofing, Retail Direct, and Building Supply Distribution) reaching customers via Home Depot, lumberyards, distributors, dealers, and direct builder relationships. The company is currently managing approximately $5 billion in debt and working with creditors and their advisers (Moelis & Co. and Paul Weiss Rifkind Wharton & Garrison) on a potential restructuring, while continuing to execute an active M&A and product expansion strategy (most recently acquiring Metal Sales Manufacturing Corp. in September 2025 and launching SunSteel integrated solar roofing in January 2026).
Cornerstone Building Brands firmographics
Firmographics- Name
- Cornerstone Building Brands
- Legal name
- Cornerstone Building Brands, Inc.
- Website
- https://cornerstonebuildingbrands.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 5,001–10,000 employees
- Ownership category
- akta.pro rank
Cornerstone Building Brands industry classification
Industry- Product category
- Exterior Building Products Manufacturing
- NAICS
- Metal Window and Door Manufacturing (332321), Ornamental and Architectural Metal Products Manufacturing (33232), Architectural and Structural Metals Manufacturing (3323)
- SIC
- Metal Doors, Sash, Frames, Moldings & Trim (3442), Fabricated Structural Metal Products (3440)
- akta.pro primary industry
- Interior Doors (IMADAIAB)
Keywords
Where Cornerstone Building Brands is headquartered
LocationHeadquarters
- HQ city
- Cary
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
Cornerstone Building Brands business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Exterior Building Products Manufacturing: Cornerstone Building Brands manufactures and sells exterior building products including vinyl windows, vinyl siding, stone veneer, metal roofing, metal wall systems, and metal accessories. Products are sold through multiple distribution channels including distributors, home centers, lumberyards, and direct to builders/contractors. Revenue is generated from product sales across residential new construction, residential repair/remodel, and commercial markets.
Go-to-market motion1 record
Distribution channels7 records
Marketing channels10 records
Cornerstone Building Brands product offering
Product offeringCore offering
Cornerstone Building Brands is the #1 manufacturer of exterior building solutions in North America, producing vinyl windows, vinyl siding, manufactured stone veneer, metal roofing, metal wall systems, and metal building systems. The company serves both residential and commercial markets through three business segments: Siding & Accessories, Windows & Doors, and Metal Solutions. Products are sold via multiple channels including home centers, distributors, lumberyards, dealers, and direct-to-builder programs across approximately 225+ facilities.
Product overview
Cornerstone Building Brands is a premier manufacturer of exterior building solutions in North America, organized into three main business segments: Siding & Accessories (Surface Solutions), Windows & Doors (Aperture Solutions), and Metal Solutions (Shelter Solutions). The company offers a comprehensive portfolio of products spanning vinyl windows, vinyl siding, stone veneer, metal roofing, metal wall systems, and metal accessories through multiple sub-brands. The Siding & Accessories division includes Mastic, Variform, Mitten, MAC Metal Architectural, StoneWorks, and Ply Gem fence/railing/gutters. The Windows & Doors division includes Simonton, American Craftsman, Silver Line, Atrium, Cascade, Harvey, North Star, Thermo-Tech, SoftLite, and Ply Gem Canada brands. The Metal Solutions division includes MBCI, ABC, Union Corrugating, Fortify Building Solutions, Mueller, Metal Sales, Star Building Systems, Metallic, Robertson, and Ceco Building Systems. The company serves both residential and commercial markets across new construction and repair & remodel channels.
Differentiator
Problem solved
Functional benefit
Brands
- Ply Gem: Vinyl siding, windows and doors, stone veneer, fence and railing products
- Simonton
- Mastic
- Variform
- Mitten
- StoneWorks
- MBCI
- CECO Building Systems
- Star Building Systems
- Metallic Building Systems
- Robertson Building Systems
- Union Corrugating Company
- American Building Components (ABC)
- American Craftsman
- Silver Line
- Atrium
- North Star
- Harvey
- Cascade Windows
- Prime Window Systems
- Thermo-Tech
- SoftLite
- Fortify Building Solutions
- Mueller
- Metal Sales
- MAC Metal Architectural
- TrueWall
- Ply Gem Canada
Products and services
- Vinyl Siding Premium vinyl siding products offered under multiple sub-brands (Mastic, Variform, Mitten, TrueWall) with broad color selection, virtually maintenance-free properties, and limited-lifetime warranties, serving builders, contractors, and homeowners across residential new construction and repair/remodel markets.
- Manufactured Stone Veneer Manufactured stone veneer products from StoneWorks brand offering regionalized character along with full installation services through a turnkey philosophy, targeting residential and commercial exterior applications.
- Vinyl Windows and Patio Doors Vinyl windows and patio doors offered under brands including Simonton, American Craftsman (Home Depot exclusive), Silver Line, Atrium, Cascade Windows, Harvey, Ply Gem Canada, SoftLite, and Thermo-Tech, serving residential new construction, replacement, and commercial markets with energy-efficient options.
- Entry Door Systems Entry door systems under the North Star brand, designed for security and home safety with high-quality craftsmanship and materials.
- Metal Roofing Metal roofing products and accessories offered under multiple brands including MBCI (90+ profiles), American Building Components (ABC), Union Corrugating, Mueller, and Fortify Building Solutions, serving residential and commercial markets.
- Metal Wall Systems Metal wall panel systems and components for commercial and industrial buildings, with over 90 profiles along with secondary structural components, trim, and related accessories.
- Metal Building Systems Pre-engineered and custom metal building systems for commercial, industrial, and agricultural applications, offered under brands including Ceco Building Systems, Star Building Systems, Metallic Building Systems, Robertson Building Systems, Fortify Building Solutions, Mueller, Metal Sales, and Hypersteel/Simplisteel.
- Fence and Railing Ply Gem fence and railing products that are easy to install, exceptionally durable, low maintenance, and designed to last for decades.
- Gutters and Rainware Sectional and seamless rain gutter options with high-quality aluminum construction featuring rust-inhibiting primer and low-mar topcoat finish.
- Steel Siding High-end steel siding products under MAC Metal Architectural brand offering rich, unique colors with uncompromising quality and aesthetics, backed by a 40-year warranty.
- SunSteel Solar Panels with Double-Lok Metal Roofing Factory-integrated solar roofing system combining SunSteel solar panels with Double-Lok standing seam metal roofing panels, creating a streamlined solar roofing solution for commercial and industrial buildings through a single-trade installation approach.
- Armacoil Steel Jobsite Coils Contractor-grade jobsite steel coils available across the Metal Solutions network in Florida and Texas, providing consistent, high-quality materials to contractors through familiar distribution channels.
- Jenny Marrs Curated Exterior Palettes A collection of 12 curated exterior design palettes developed with designer Jenny Marrs, offering coordinated product pairings of siding, windows, stone, trim, and accent colors for homeowners and remodelers.
- Ply Gem Pro Academy Contractor training and certification program providing enhanced educational resources, installation training, and professional development for exterior contractor professionals, including VSI Certified Installer program and AIA-approved CEU courses.
Quantifiable outcome
- 40% reduction in window seal failure likelihood through window dunk test process
- +2 more outcomes
Companies that use Cornerstone Building Brands
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles5 records
Cornerstone Building Brands technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Cornerstone Building Brands partnerships and signals
Strategic signalPartnerships
14 partnerships are on record, tiered core and minor.
- Jordan DaviscoreMulti-platinum, award-winning country music artist serves as 2026 Home for Good Project Ambassador, helping raise awareness for affordable housing need. Jordan Davis brings music industry connections to strengthen and inspire communities through the partnership.
- AUO Energy BusinesscorePartnership to integrate SunSteel™ solar panels factory-integrated with Double-Lok™ metal roofing panels, creating a streamlined solar roofing solution for commercial and industrial buildings. The integrated system arrives with solar panels pre-applied to each roofing panel, combining clean energy generation with metal roofing durability through a single-trade approach designed to simplify project delivery and reduce installation time.
- Anthony Alfredo / Young's MotorsportsminorNASCAR Xfinity Series sponsorship featuring Hypersteel cold-formed buildings at Charlotte Motor Speedway, supporting motorsports team and driver.
- Lady A (LadyAID)minorPartnership with GRAMMY Award-winning trio Lady A to donate $50,000 in windows and siding to Rockford Area Habitat for Humanity and contribute $10,000 to LadyAID's initiatives, supporting affordable housing during holiday season.
- Roc Solid FoundationminorPartnership to build hope for kids fighting cancer through multi-state initiative bringing 16 backyard playsets to children fighting pediatric cancer during Childhood Cancer Awareness Month and beyond.
- Sherwin-WilliamsminorCollaboration with global paint and coatings leader The Sherwin-Williams Company brings stylish selections to home exteriors. Partnership offers stylish array of window shutters in trend-forward palette of designer colors chosen in collaboration with Sherwin-Williams color experts.
- Metal Building Manufacturers Association (MBMA)minorPartnership with MBMA to help ensure building solutions adhere to industry-leading guidelines and best practices. MBMA provides standards and certification support for metal building manufacturers.
- Metal Roofing Alliance (MRA)minorIndustry partnership supporting metal roofing standards and best practices, helping ensure product quality and installation standards across the metal roofing sector.
- Florida Roofing and Sheet Metal Contractors Association (FRSA)minorIndustry partnership for roofing standards and contractor certification, ensuring adherence to industry-leading guidelines for metal roofing installations.
- International Accreditation Service (IAS)minorAccreditation partnership ensuring building products meet international standards through third-party verification of compliance and quality systems.
- Dave and Jenny MarrscoreMulti-year partnership with HGTV Fixer to Fabulous hosts featuring Ply Gem, Mastic, Simonton Windows & Doors and American Craftsman products in home renovation projects. Partnership expanded in 2026 with Jenny Marrs launching 12 curated exterior design palettes. Products featured in fourth consecutive season of Fixer to Fabulous.
- Hanley Wood UniversityminorPartnership with Hanley Wood University to sponsor CEU course on Water Management Best Practices for Masonry Applications and Metal Wall Panel Systems, approved by AIA for continuing education credit.
- National Home BuilderminorPartnership formalized in 2017 to reclaim scrap vinyl siding, reduce packaging, and decrease wood needed for transportation using bulk crates. In 2023, program reclaimed over 1.6 million pounds of scrap for recycling.
- Habitat for HumanitycoreHome for Good project partnership to address critical need for affordable housing across North America. Cornerstone Building Brands donates products, facilitates house builds, and partners with country music artists to raise awareness and funds. Since 2016, the company has helped build or remodel over 930 homes and impacted 175+ communities with $4.5 million in donations.
Scale indicators13 records
Recent moves8 records
Expansion highlights5 records
Cornerstone Building Brands competitors and assessment
Company assessmentRegional players
- Builders FirstSource: Builders FirstSource is the largest U.S. supplier of building products, prefabricated components, and value-added services to professional builders, competing as a downstream distributor and customer of Cornerstone's siding and metal building products.
- ABC Supply Co. ABC Supply is the largest wholesale distributor of roofing, siding, windows, and other exterior building products in North America, serving as both a major customer and channel partner for Cornerstone's metal roofing and siding brands.
Broad incumbents
- LP Building Solutions: LP Building Solutions is a leading manufacturer of engineered wood building products including siding, with structural and exterior product lines that overlap with Cornerstone's Siding & Accessories segment across residential new construction and R&R.
- Carlisle Construction Materials: Carlisle is a broad building envelope products manufacturer with a large commercial roofing division, competing with Cornerstone's MBCI metal roofing and wall systems across commercial and industrial construction markets.
Direct peers
- JELD-WEN: JELD-WEN is one of the world's largest manufacturers of windows and doors, directly competing with Cornerstone Building Brands' Aperture Solutions segment across residential and commercial channels. JELD-WEN's portfolio overlaps with Simonton, Ply Gem, American Craftsman, and other CBB window/door brands.
- Owens Corning: Owens Corning is a global building products leader with a major Roofing segment that directly competes with Cornerstone's Metal Solutions division (MBCI, Union Corrugating, Mueller). Cornerstone's incoming CEO Gunner Smith was previously President of Roofing at Owens Corning, indicating direct operational overlap.
- Masonite International: Masonite is one of the world's largest manufacturers of interior and exterior doors, directly competing with Cornerstone's North Star entry door systems and overall windows & doors portfolio across residential and commercial markets.
- MI Windows and Doors: MI Windows and Doors is one of the largest vertically-integrated vinyl window and door manufacturers in the U.S., directly competing with Cornerstone's vinyl window brands (Ply Gem, Simonton, Silver Line) particularly in new construction and multifamily segments.
- Andersen Corporation: Andersen is the largest manufacturer of windows and doors in North America, a privately-held peer that directly competes with Cornerstone's Ply Gem, Simonton, and Harvey window brands across both new construction and replacement/remodel channels.
- PGT Innovations: PGT Innovations is a leading manufacturer of windows and doors including impact-resistant products, directly competing with Cornerstone's window brands in hurricane-prone markets such as Florida and the Southeast.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Cornerstone Building Brands social profiles
Digital presenceCornerstone Building Brands compliance and trust
Trust signalCompliance3 records
Cornerstone Building Brands financial estimates
Financial estimateRevenue estimate
Valuation estimate
Cornerstone Building Brands leadership team
Management profileNumber of profiles
Profiles10 records
Cornerstone Building Brands subsidiaries and ownership
Company hierarchySubsidiaries4 records
Cornerstone Building Brands funding detail
Funding detailFunding overview
Funding rounds1 record
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Cornerstone Building Brands M&A and investment
M&A and investmentM&A8 records
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Cornerstone Building Brands
What does Cornerstone Building Brands do?
Cornerstone Building Brands is the #1 manufacturer of exterior building solutions in North America, producing vinyl windows, vinyl siding, manufactured stone veneer, metal roofing, metal wall systems, and metal building systems. The company serves both residential and commercial markets through three business segments: Siding & Accessories, Windows & Doors, and Metal Solutions. Products are sold via multiple channels including home centers, distributors, lumberyards, dealers, and direct-to-builder programs across approximately 225+ facilities.
Is Cornerstone Building Brands a public or private company?
Cornerstone Building Brands is a private company. It is classified as private equity controlled and is currently operating.
When was Cornerstone Building Brands founded?
Cornerstone Building Brands was founded in 2018. It employs 5,001 to 10,000 people.
Where is Cornerstone Building Brands based?
Cornerstone Building Brands is headquartered in Cary, United States, in the North America region.
How does Cornerstone Building Brands make money?
One revenue line is on record: exterior Building Products Manufacturing.
Who are Cornerstone Building Brands's main competitors?
Regional players on record are Builders FirstSource and ABC Supply Co.. Broad incumbents are LP Building Solutions and Carlisle Construction Materials. Direct peers are JELD-WEN, Owens Corning, Masonite International, MI Windows and Doors, Andersen Corporation and PGT Innovations.
Does Cornerstone Building Brands have an API?
No public API is recorded for Cornerstone Building Brands.
What industry is Cornerstone Building Brands in?
Cornerstone Building Brands's product category is Exterior Building Products Manufacturing. Its primary akta.pro industry code is IMADAIAB, Interior Doors. Its NAICS code is 332321 and its SIC code is 3442.