SUMMARY

The Plant Controller provides financial leadership for the Portland Roofing & Asphalt manufacturing facility and serves as a strategic business partner to the Plant Leader and leadership team. This role leads planning, analysis, and governance that improve plant profitability and capital efficiency while ensuring a strong controls environment consistent with company policy and regulatory requirements (e.g., GAAP and SOX). The Plant Controller connects daily operating decisions to results by translating performance into actionable insights—especially around material efficiency, productivity, and inventory accuracy.

Reporting Relationship and Team

Reports to Plant Leader; dotted-line accountability to regional Manufacturing Finance.
Works closely with: Operations, Maintenance, Supply Chain/Procurement, Quality, EHS, and HR.
May lead or provide functional oversight for plant purchasing/buying, raw materials, inventory control, and shipping/transportation processes.

JOB DUTIES AND RESPONSIBILITIES:

Operations Planning

Partner with the Plant Leader and leadership team to set operational objectives aligned to division and corporate strategy, translating plans into measurable financial and operational targets.
Build and maintain site scorecards that connect safety, quality, service, and cost performance to financial outcomes.
* Lead scenario planning, risk/opportunity identification, and contingency planning to protect results through changing demand, input costs, and operating constraints.

Financial Planning, Reporting & Analysis

Lead annual budget, monthly forecast, and long-range planning processes for the plant; ensure assumptions are well-documented, challengeable, and tied to operating plans.
Oversee the monthly close process in partnership with accounting; ensure accurate inventory valuation, accruals, and timely financial statements.
Prepare and deliver clear updates to plant and finance leadership, including root-cause variance analysis (volume, mix, yield, conversion cost, freight, and overhead absorption).
Provide actionable analytics that inform staffing, run strategy, maintenance spend, procurement decisions, and customer service commitments.

Financial & Operational Controls

Maintain an effective internal controls environment including segregation of duties, data integrity, asset protection, inventory controls, and compliance with corporate policies and applicable regulations (including GAAP and SOX).
Own plant-level controls testing, representation/attestation processes, and remediation plans; ensure processes are documented, understood, and consistently executed.
* Ensure disciplined governance over purchasing approvals, capital spend tracking, and contract compliance.

Profitability, Productivity & Material Efficiency Results

Own the plant’s cost-to-make and profitability rhythm: identify drivers, prioritize countermeasures, and track savings to ensure benefits are realized.
Lead material efficiency performance management by establishing baselines and targets and driving actions to improve yield and reduce scrap, rework, and process loss (e.g., shingle yield, asphalt usage, granule loss, packaging consumption).
Translate productivity opportunities into financial impact and governance, including labor productivity, overall equipment effectiveness (OEE), run rates, downtime, and changeover performance.
Partner with Operations and Supply Chain to validate and capture savings from continuous improvement, TPM/lean initiatives, standard work, and reliability improvements.
* Develop and maintain KPI dashboards and routines that connect operational drivers to financial outcomes (e.g., material yield %, scrap rate, OEE, squares or tons/hour, labor hours per unit, conversion cost per unit, and cost of poor quality).

Working Capital, Inventory & Supply Chain Support

Ensure accurate product costing and inventory valuation; lead cycle count governance, physical inventories, and root-cause actions that improve inventory accuracy.
Monitor and improve working capital by partnering on raw material and finished goods strategies, obsolescence risk, slow-moving inventory, and warehousing practices.

Capital & Investment Analysis

Build and challenge investment business cases (ROI/NPV/payback), ensuring assumptions are aligned with operational realities and risk is clearly articulated.
Track capital spend, benefits realization, and post-project performance; provide transparency to tradeoffs and resource allocation decisions.
* Support a strong capital efficiency culture by prioritizing projects that improve safety, quality, throughput, and cost-to-make.

People Leadership & Culture

Promote a safe and respectful workplace by actively supporting EHS programs and integrating risk awareness into business decisions.
Educate non-financial leaders on key performance metrics and financial concepts to strengthen ownership and decision quality across the plant.

Job Requirements

Experience

Bachelor’s degree in finance, accounting or relevant discipline required
5 years of plant controller in a manufacturing environment
Providing leadership to teams within a manufacturing organization – such as leading operations planning, savings, forecasting
Delivering continuous improvement.
Participating in the development of strategic plans
Negotiating, developing, and evaluating customer and supplier contracts
Attracting, developing and retaining outstanding talent—growing talent and succession planning.
Operating in a range of economic conditions, i.e, expansion, contraction, stable economic conditions – forecasting, scenario planning, risk analysis, and contingency development.

SKILLS AND ABILITIES

Strong financial acumen with demonstrated analytical ability, knowledge of corporate finance and manufacturing costing principles – understands P&L and balance sheet dynamics
Demonstrated ability to teach and communicate clearly and concisely
Demonstrated ability to manage and control costs – effectively develops business cases and enrolls leaders to take appropriate action
Demonstrated ability to develop deep knowledge of customers, competition, and market and uses this information to drive customer and product profitability
Demonstrated ability to think strategically and execute strategic directions
Broad operating style, ability to adapt across cultures, environments, and styles.
Forward thinking leadership abilities, including ability to motivate, lead by example, and encourage teamwork and effective communication.
Makes decisions and commits to action with appropriate information, weighing and managing risk
* Conducts himself/herself with the highest ethical and moral standards

This job description in no way states or implies that these are the only duties to be performed by the employee(s) incumbent in this position. Employee(s) will be required to follow any other job-related instructions and to perform any other job-related duties requested by any person authorized to give instructions or assignments.

LI-RF1

About Owens Corning

Owens Corning is a branded building products leader with three complementary market-leading businesses providing roofing, insulation, and doors primarily for residential markets in North America and Europe. The company operates with an integrated go-to-market strategy and a unique set of OC Advantages™ – including its iconic brand, unparalleled commercial strength, leading technology, and winning cost position – to help customers win and grow in the market. Owens Corning is committed to helping build better and achieve more through winning partnerships, leading performance, and engaging people. Founded in 1938 and headquartered in Toledo, Ohio, Owens Corning is listed on the New York Stock Exchange (NYSE: OC).

Owens Corning is an equal opportunity employer. Except in limited circumstances such as formal apprenticeship programs, Owens Corning does not employ anyone under the age of 18.