GAF reviews

3.2

56% would recommend to a friend

(561 total reviews)
avatar

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
2.0
Dec 29, 2015
Recommend
CEO approval
Business Outlook

Pros

Descent pay and gym on site.

Cons

Horrible experience by far, feels like working in a plant except you are actually in an office setting. No direction in what is expected meaning training does not exist, what makes things even worse is that without any formal guidance upper level likes to micromanage and looks over your every move. The younger and older staff are treated very differently. Not a long term place to be.

2.0
Jan 16, 2026

Not the GAF I loved.

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Fridays are still remote. That's it Just that.

Cons

The new CEO has effectively killed what was so special about this place. He's fired anyone who knows anything about making our product, development of new innovations, what makes us special to our partners, marketing which was one of the things that made me proud to work here, and taking away the cool stuff that made GAF different.

2.0
Jul 26, 2025

Keep Current Hybrid Schedule

Recommend
CEO approval
Business Outlook

Pros

It would be a pro to leave the current hybrid schedule alone. For everyone’s mental health.

Cons

Moving to a 4:1 work model come September. They claim for collaboration. Half the time people sit on Google meets in their own department instead of getting a conference room. Plus when we try to collaborate in the office on the floor we’re told we’re too loud. Go figure.

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GAF Response
8mo
Thank you for taking the time to share your perspective. We hear your concerns about the upcoming change to our hybrid schedule and the impact it has on mental health and a productive work environment. We appreciate your honest feedback about the challenges of in-office collaboration and will use your insights to help us create a more supportive and effective experience for everyone. Feel free to email us at gaf.hrparsippany@gaf.com if you have anything else you'd like to share.
Viewing 40 - 42 of 561 Reviews

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.