Plant Manager

Who We Are

Johns Manville is a leading manufacturer and marketer of premium-quality insulation and commercial roofing, along with glass fibers and nonwovens for commercial, industrial and residential applications. Our products are used in a wide variety of industries including building products, aerospace, automotive and transportation, filtration, commercial interiors, waterproofing and wind energy.

A proud member of the Berkshire Hathaway family of companies, we serve customers in more than 80 countries around the globe. We are committed to delivering positive and powerful experiences, because we are successful only when our employees and customers thrive. We are passionate, we care about people, we perform at a superior level, and we protect others and our environments.

Pay Range

This is the base salary pay range that an applicant can expect to make upon hire. Pay within this range will vary based upon relevant experience, skills, and education among other factors. In addition, this position is eligible for an incentive bonus.

Johns Manville (JM), a Berkshire Hathaway company, is seeking a dynamic, results‑driven Plant Manager to lead our 300+employee, unionized fiberglass insulation manufacturing facility in Winder, GA. This is a high‑impact, highly visible leadership role for a plant that is critical to JM’s growth—in 2026 the Winder site will expand with a brand‑new production line, requiring exceptional operational leadership, transformational change management, and deep workforce engagement.

If you are a proven manufacturing leader who excels in building culture, improving performance, and leading large‑scale change, this is an opportunity to leave your mark on a flagship site.

What Success Looks Like

Within this role, success isn’t defined by tasks—it’s defined by measurable outcomes . The Plant Manager will be expected to:

• Drive a culture of safety excellence by implementing proactive safety programs, leading root‑cause investigations, and ensuring continuous improvement initiatives that consistently reduce workplace incidents and enhance overall facility safety performance.
• Improve operational performance year over year , including productivity, throughput, quality, and cost‑to‑produce.
• Strengthen employee engagement across a 300+ member union workforce , fostering collaboration, trust, and strong labor‑management partnerships.
• Drive cultural alignment with JM values , creating an environment where safety, ownership, and continuous improvement are non‑negotiable.
• Embed a disciplined CI approach (Lean, Six Sigma, KT, etc.) that leads to sustainable performance improvements.
• Ensure regulatory excellence , including environmental permitting, agency relationships, and EHS compliance above company standards.
• Develop a strong leadership bench , building capability and accountability across salaried and hourly teams.

Your Impact

As the Plant Manager, you will be responsible for directing all functions of plant operations, including EHS, HR, Maintenance, SIOP, Quality, Engineering, Capital, and Finance. You will:

• Lead the strategic direction of the facility and ensure operational execution.
• Create and implement policies that support plant safety, output, and reliability.
• Manage multimillion‑dollar capital projects and capacity‑expansion initiatives.
• Build a high‑performing leadership team through coaching, development, and clear accountability.
• Represent JM with local partners, regulatory bodies, and the community.
• Champion continuous improvement, technology adoption, and operational excellence.

What You Bring

• Bachelor’s degree, technical discipline preferred and 10+ years of progressive manufacturing leadership , including 3+ years as a Plant Manager .
• Experience leading a large-scale complex operation
• Experience managing in a union environment.
• Demonstrated success improving performance through Lean, Six Sigma, or similar continuous improvement methodologies.
• Strong financial acumen with a track record of delivery cost, productivity, and quality improvements.
• Experience overseeing capital projects, environmental permitting, and safety programs.
• Proven ability to lead through change, build culture, and inspire diverse teams.
• Technical and mechanical aptitude; outstanding communication and leadership skills.
• Proficiency with Microsoft Office and the ability to interface at all levels internally and externally.

Why this Opportunity

This role offers a unique blend of stability and transformation :

A Berkshire Hathaway Company

JM provides exceptional financial strength, long‑term stability, and a culture built on integrity and respect.

Lead a Facility on the Rise

The Winder plant is preparing for significant expansion and modernization—an opportunity to shape the future of the site and build a world‑class operation.

High Visibility & Impact

This is a pivotal leadership role with direct access to senior leadership and direct influence on JM’s strategic growth.

Strong People‑First Culture

JM is committed to safety, employee well‑being, and creating workplaces where people are proud to work.

Make a Lasting Impact

You'll have the platform, resources, and autonomy to build a stronger plant, stronger teams, and stronger outcomes.

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Please Keep in Mind

If you do not meet 100% of these requirements, we at JM still want to hear from you. So, if you are interested in the role, we encourage you to apply so we can learn how your skills and talents can contribute to our team.

Benefits

Johns Manville (JM) offers a wide range of benefits to employees. Some are subsidized by the company and others are fully employee-paid. Health benefits include a choice of comprehensive medical plans, a dental plan, vision plan, wellness program and critical illness insurance. JM sponsors a 401(k) plan which includes a sizeable company match. JM offers paid vacation and also provides paid sick and parental leave for eligible employees.

Additionally, Johns Manville provides basic life Insurance, short-term and long-term disability coverage, an employee assistance program, and business travel accident coverage. Supplemental life insurance and accidental death and dismemberment insurance are available as well. The company also offers a variety of tax saving accounts; health spending