Since most roofers are good at roofing and poor at keeping accurate records, you have a powerful side gig opportunity to make a difference in your community while earning above average income.
All business eventually need funding. Your ability to read financial statements allows you to consult with clients at a higher level and to gain desired result. You can handle the raw data entry if you want or farm it out to a bookkeeper. Regardless, you lead and give directions.
Done right, you and your clients will profit.