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GAF Tech Stack

North American roofing and waterproofing manufacturer scaling SAP infrastructure

Wholesale Building Materials Parsippany, New Jersey 1,001–5,000 employees Privately Held

GAF is a legacy roofing manufacturer (135+ years) operating across North America with 1,000–5,000 employees. The tech stack reflects heavy industrial operations: Rockwell Automation (PLC, Studio 5000, Allen-Bradley), Siemens, SAP, and specialized CMMS tooling. Two concrete signals of operational shift: active SAP S/4HANA and SAP IBP implementations, plus a hiring surge in manufacturing and engineering roles paired with SAP functional leadership positions — indicating both ERP modernization and capacity expansion tied to new plant construction.

Tech Stack 51 technologies

Core StackAllen-Bradley Siemens AutoCAD Salesforce Okta SAP SAP MM Maximo PLC ControlNet Ethernet/IP Studio 5000 RSLogix 500 Rockwell Automation Wonderware Modbus Profibus RSLinx Ethernet Simulink Google Workspace Google Visio RSLogix PeopleSoft Windows AODocs Excel CMMS SAP SD+21 more

AdoptingSAP S/4HANA SAP IBP

What GAF Is Building

◆Challenges

Reducing equipment downtime
Construction and commissioning phases
Equipment reliability
Streamlining procurement processes
Improving equipment uptime
Improving overall equipment performance
Low inventory cost
Compliance with regulations
Ensuring supplier compliance
Seamless integration between ibp and s/4hana

▲Active Projects

Capital projects
Construction and commissioning of new plant
S/4hana pp implementation
Design and construction of the facility
Sales of timbersteel premium metal roofing system
Sap ibp implementation
Lean principles implementation
Plant trials with r&d
Maintenance reliability improvement
Preventative maintenance system development

Hiring Activity

Steady140 roles · 50 in 30d

Department

Manufacturing

41

Engineering

27

Ops

27

Sales

17

HR

8

Logistics

2

Maintenance

2

Operations

2

Seniority

Mid

52

Junior

38

Senior

28

Manager

14

Intern

5

Lead

1

Principal

1

Notable leadership hires: SAP Functional Lead, SAP Finance Lead

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About GAF

GAF manufactures roofing and waterproofing products for residential and commercial markets across North America. The company operates manufacturing plants with significant process automation (Rockwell, Siemens) and is currently constructing and commissioning new production facilities. The business spans product innovation (metal roofing systems), supply-chain management, and distribution to roofing professionals and contractors. Current strategic focus includes plant reliability (uptime and equipment performance), procurement optimization, and digital infrastructure upgrades (SAP modernization), with 142 open roles predominantly in manufacturing, engineering, and operations.

HeadquartersParsippany, New Jersey

Company Size1,001–5,000 employees

Hiring MarketsUnited States

Frequently Asked Questions

What manufacturing software does GAF use?

Maximo (asset management), PeopleSoft (HR), SAP (ERP with modules MM/SD), and Wonderware (industrial automation). Currently migrating to SAP S/4HANA and deploying SAP Integrated Business Planning (IBP).

What is GAF working on?

Major projects include construction/commissioning of new plants, SAP S/4HANA PP and SAP IBP implementations, equipment reliability improvements, and lean process optimization. Also launching a premium metal roofing system.