GAF reviews

3.2

56% would recommend to a friend

(561 total reviews)
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John Altmeyer

40% approve of CEO

43% positive business outlook

GAF has an employee rating of 3.2 out of 5 stars, based on 561 company reviews on Glassdoor which indicates that most employees have a good working experience there. The GAF employee rating is in line with the average (within 1 standard deviation) for employers within the Manufacturing industry (3.5 stars).

Reviews by job title

561 reviews
1.0
Mar 21, 2025
Recommend
CEO approval
Business Outlook

Pros

One of the best parts of working here has been the incredible team. My coworkers are talented, hardworking, and truly supportive of one another. The collaboration and camaraderie within the team have made this a great place to work, and I genuinely enjoy working alongside them. However, with this sudden change in office requirements, I worry that many of them will choose to leave. It would be disappointing to see such an amazing group of people break apart due to a decision that could have been avoided.

Cons

The decision to increase mandatory office days from three to four is a major disruption to employees’ work-life balance. Many of us have structured our routines around the three-day requirement, and forcing an extra day in the office removes the flexibility that has allowed employees to stay productive while managing personal responsibilities. This change creates additional financial stress, particularly for parents—especially single parents—who now have to adjust their childcare arrangements, deal with longer commutes, and take on added expenses they weren’t expecting. With the rising cost of living, employees will now have to budget for higher transportation, childcare, and other costs associated with an extra day in the office. While this company offers competitive pay, these added expenses still create an unnecessary burden that could have been avoided by keeping the current schedule. Additionally, this decision feels like a bait-and-switch for newer employees. Many people accepted jobs here under the assumption that the company was committed to a 3-2 hybrid model. How can a company say one thing during the hiring process and then change the terms once employees are already committed? This kind of inconsistency erodes trust and can make employees question leadership’s transparency and decision-making. On top of that, this move directly contradicts the company’s goal of fostering a positive culture. A strong culture isn’t built by forcing people into the office more—it comes from trust, flexibility, and respecting employees’ needs. Many employees are unhappy with this change, and some are already considering leaving. If that happens, the remaining employees will be overworked, leading to burnout and further dissatisfaction. The CEO does not seem to recognize that many successful companies continue to thrive with remote or flexible work arrangements, and this unnecessary shift feels out of touch with modern workforce expectations. Employee morale will take a significant hit because leadership is not considering the realities of today’s world. The pandemic permanently changed how people approach work, and instead of adapting, this company is choosing to move backward.

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GAF Response
1y
We understand that shifts in workplace expectations can be challenging, and we’re committed to supporting our employees through this transition. Our move to a 4:1 in-office schedule reflects our belief in the power of in-person collaboration to drive innovation, connection, and long-term success. While the policy will remain in place, we’re actively working on ways to make the in-office experience as productive and positive as possible, and we welcome ongoing dialogue to help us do that well. While we may not be able to address every concern immediately, your feedback is an important part of our ongoing conversations about how we work together.
1.0
Aug 23, 2023

Corporate HELL - DO NOT WORK HERE

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

None, this place will destroy your mental health and quality of life real fast. Good luck taking time off to take advantage of even having health benefits.

Cons

I have never worked for such a disaster of a company!!! The new CEO has absolutely DESTROYED the morale and quality of life of GAF employees. Errors given to employees in certain departments while others face no repercussions for mistakes. Supervisors can't be bothered to assist their teams when short, departments are unwilling to assist other departments when needed, no one can communicate on any level, there is no sense of working together, major issues are NEVER resolved just "we're working on it", horrible work flow structure, and you are never good enough or doing enough. Do yourself a favor and work literally anywhere else. This place is a catastrophic disaster.

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GAF Response
1y
I'm truly sorry to hear about the difficult time you've had at GAF. Your feedback about the impact on mental health and quality of life is concerning, and I can understand how frustrating it must be when issues aren't addressed and communication breaks down. Your well-being is important to us, and we take your feedback seriously. We're committed to creating a supportive work environment where everyone feels valued and heard. Thank you for sharing your thoughts, and please know that we're actively working to make meaningful improvements. Please email us at gaf.hrparsippany@gaf.com if you have any additional thoughts you'd like to share.
2.0
May 31, 2023
Recommend
CEO approval
Business Outlook

Pros

Really great coworkers. Alright benefits.

Cons

Upper management does not care for their employees, just the tax break GAF gets for getting more people back in the office full time. For a company that once had perks for all employees (people who work long hours, show loyalty, and bend over backwards each and every day for the customer), employee morale has been gone into the gutter. New CEO John Altmeyer and his team have, in mere months, taken away and drastically altered even the smallest perks we once had, leaving a trail of disillusioned and upset employees. Half of the company is remote. Saving money on gas, childcare, daily cost of living, etc, while the rest of us are told to get back into the office at some point this year full time. Our cost of living is much higher than those remote with no higher salary. In the SAME company. Don’t let some of these other reviews fool you, there is NO flexibility when it comes to remote days. It’s actually worse than when I started near 10 years ago. Your child is sick? Use a vacation day. You have a repair person coming to the house that you can easily work still? Must use a vacation day. Zero flexibility and quickly going back to the Stone Age. Very rarely do we actually have an in-person meeting that requires coming to the office. Good luck finding new talent.

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GAF Response
3y
We'd like to learn more about your thoughts and how we can improve if you would be willing to share by reaching out to HR at gaf.hrparsippany@gaf.com.
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Glassdoor has 658 GAF reviews submitted anonymously by GAF employees. Read employee reviews and ratings on Glassdoor to decide if GAF is right for you.