Miller's Roofing Inc. installed this new roof using GAF Timberline H-Z Barkwood. Millers Roofing has been in the roofing business for a long time. Our reputation is important to us and we work hard to make sure homeowners are getting great customer service and workmanship. Here are two projects also using GAF Timberline H-Z Barkwood. Barkwood Project 1 , Barkwood Project 2 As a York roofing contractor, we would love it if you considered giving us a call for a free estimate today at 717-432-7947. Our services include the entire exterior of a home including; gutters, windows & doors, siding and solar.