Sales Manager · Roofing & Exterior Expert
Darrien Null leads Greenawalt Roofing’s sales team and helps homeowners make sense of roofing and exterior decisions. He focuses on what is happening on the home, clear options, and a written scope that homeowners can compare fairly.
“I’m dedicated to guiding homeowners through a smooth and transparent process while helping them protect one of their biggest investments. I take pride in building lasting relationships and tailoring each experience to fit my clients’ unique needs.”
The questions Darrien works through
Roofing decisions rarely start with a product name. They start with questions: Is a repair enough? Why are two estimates far apart? What will a different shingle look like on the house? What happens if the crew discovers damaged decking? Darrien connects the answer to the observed condition and the written scope, including materials, flashing, ventilation, possible changes, and the homeowner’s goals.
For example, Darrien advises homeowners comparing roof estimates to check whether both bids include tear-off, underlayment, flashing, ventilation, decking terms, cleanup, and the same warranty scope. When discussing shingle upgrades, he asks about siding, trim, windows, gutters, the front door, and any planned exterior changes before suggesting a color.
Guidance from a team homeowners can check
Greenawalt Roofing is a Lancaster County business founded in 2004. The company was named among CertainTeed’s 2025 Triple Crown contractor recipients and reports first-place results for roofing, siding, and spouting in the 2026 LNP Readers’ Choice Awards. CertainTeed also lists Greenawalt as a ShingleMaster PREMIER contractor. These are company distinctions, earned across the team. Darrien brings the same care for clear recommendations and customer experience into the conversations he leads.
Read Darrien’s roofing guidance
- Why are roofing estimates thousands of dollars apart? Compare the work line by line.
- Is upgrading roofing shingles worth the extra cost? Compare the product, appearance, and installed price on the same roof.
Ask Greenawalt about your roof. Share your concern, request a written estimate, and ask Darrien’s team to explain anything that is unclear. Contact Greenawalt Roofing.