Family-Owned, Licensed, and Built on over 31 Years of Experience

Source 4 Window and Door is a family-owned window, door, and siding installation company based in West Sunbury, PA. We founded the business in February 2024, but our story starts long before that. Owner John DeRunk brings more than 31 years of hands-on installation experience to every project we take on, working directly with homeowners across Armstrong, Butler, and Beaver counties and Lawrence County. While our company name is new, the skill behind it is not. We built this business so homeowners in western Pennsylvania have a licensed, local contractor they can trust with their home.

John DeRunk has worked directly in window, door, and siding installation for more than three decades before founding Source 4 Window and Door. He personally oversees the quality standard on every job we run, rather than handing that responsibility to an unfamiliar crew. That means the person who understands your project from the first measurement is the same person making sure it gets done right.

Source 4 Window and Door holds Pennsylvania Home Improvement Contractor License No. PA 192461. Homeowners can verify this license independently through the Pennsylvania Attorney General's Home Improvement Consumer Protection Act registry. This license authorizes us to perform residential installation work throughout Armstrong, Butler, and Beaver counties and Lawrence County.

Request Your Free Estimate Today

Requesting an estimate is free and comes with no obligation. Source 4 Window and Door responds to every inquiry submitted through our contact page.