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
4.0
Apr 17, 2026
Recommend
CEO approval
Business Outlook

Pros

The company is data-driven and focused on achieving results. High performance is recognized. Safety is a priority.

Cons

The environment in the manufacturing areas is extreme. Generally hot in the summer and cold in the winter. The process by it's nature is loud and dirty.

Viewing 10 - 12 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.