Harmon & Sons has protected and improved NJ and PA homes since 1998. Roofing, siding, windows, decks — done right the first time, guaranteed.
From roof to deck, we handle every major exterior and interior project with the same attention to detail.
Full replacements, storm damage repair, and inspections. GAF Master Elite & CertainTeed Select ShingleMaster certified. All materials warranted.
Get a Roofing Estimate →Vinyl, fiber cement, cedar shake, and aluminum options. Improve curb appeal and energy efficiency. We match or beat any written quote.
Get a Siding Estimate →Energy Star certified replacement windows and entry/patio doors. Reduce heating and cooling costs. Professional installation, no subs.
Get a Windows Estimate →Pressure-treated and composite deck construction, pergolas, and railings. Custom designs built to your space and budget.
Get a Deck Estimate →Seamless gutter installation in aluminum, copper, or steel. Gutter guard systems to eliminate cleaning. Full downspout solutions.
Get a Gutters Estimate →Additions, renovations, and repairs of any size. One call covers the whole project — we coordinate every trade so you don't have to.
Discuss Your Project →No pressure, no obligation. We'll come to you, assess the project, and give you a detailed written quote — usually within 48 hours.
🔒 Your info is never shared. We typically respond within 4 business hours.
Over 200 five-star reviews across Google and Angi. Here's what real customers think.
"Bob and his crew replaced our entire roof in one day. They were there at 7am and completely cleaned up by 4pm. The price was fair and everything was exactly as quoted. No surprises."
"Had Harmon & Sons do siding and three windows. The difference in our energy bill was noticeable the very first month. Highly recommend — I've already sent two neighbors their way."
"Called four contractors for our deck project. Harmon & Sons were the most professional from start to finish. The deck looks incredible and they finished two days early."
Mon–Fri 7am–6pm · Sat 8am–2pm
We respond within 4 business hours
14 Oak Industrial Rd
Randolph, NJ 07869
Morris, Sussex, Warren, Hunterdon & Somerset counties in NJ · Northampton & Lehigh counties in PA
Randolph, NJ 07869
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