In person interview at the factory. Interviewed by the entire office in a way where I switched rooms ever 20 minutes to talk to someone else. They reimbursed me for the gas and miles to drive to the interview.
Interview questions [1]
Question 1
Talk about a time you had to make a difficult decision
I applied through college or university. I interviewed at GAF (Ennis, TX)
Interview
Interviewed for the quality engineering position, And I can say it was one of the most fun and enriching experiences I have had in my college experience. If you're considering quality, GAF is a great place to start, as they're willing to help you learn as long as you show interest in them and their work. Their interviewing process is more of a formality to get to know the students and see if any of the hiring managers make connections with them, so try to connect with the managers and be yourself!
Interview questions [1]
Question 1
Regular STARR questions that take an interest in your challenges.
I applied through college or university. The process took 2 days. I interviewed at GAF in Feb 2025
Interview
Mostly behavioral, focusing on my resume and how I would fit at the company. Interviewers were both very friendly and were excited to be there and to talk to me.
Interview questions [1]
Question 1
Are you comfortable working hands-on in this role?
Engineering Co-Op applicants have rated the interview process at GAF with 2.9 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 73% positive. To compare, the company-average is 61.5% positive. This is according to Glassdoor user ratings.
Candidates applying for Engineering Co-Op roles take an average of 14 days to get hired, when considering 11 user submitted interviews for this role. To compare, the hiring process at GAF overall takes an average of 22 days.
Common stages of the interview process at GAF as a Engineering Co-Op according to 11 Glassdoor interviews include:
Drug test: 24%
One on one interview: 24%
Group panel interview: 19%
Background check: 19%
Skills test: 5%
Phone interview: 5%
IQ intelligence test: 5%
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