Roof Installation for New Builds and Additions in Harrisburg
Build a new addition off the back of a house in Hummelstown or put up a garage in Linglestown, and the roof is where the new work has to marry the old. Around Hershey and the growing pockets of Lower Paxton there is steady new construction, and out in the older boroughs there are additions going on houses framed a century apart. A new roof system on either one is a different job from re-covering an existing house.
This is roof installation as our Harrisburg, PA office does it — the same crew, the same number, the same written estimate before anything starts.
On a new build we come in at the point the sheathing is on and take it from there to the ridge cap: drip edge, ice-and-water at the eaves and valleys, underlayment across the field, starter course, field shingles, hip and ridge, and the ventilation laid out as part of the design rather than added later. On an addition the harder half is the tie-in — where the new slope meets the existing roof, where it dies into a sidewall, and where a low-slope shed section over a family room has to hand water off to a steeper plane above it.
Manufacturer specification is not paperwork, it is the nailing pattern, the exposure, the fastener length, the starter and the ventilation ratio — and if any of those are wrong the material warranty is the first thing to go. Nails high in the shingle miss the common bond and the field peels in the first real wind. Sidewall transitions need step flashing woven course by course with counterflashing above it, not a bead of sealant. Low-slope sections under three-in-twelve are not a shingle application at all; those get membrane, properly terminated where they meet the steep roof.
We work to a written proposal and a schedule you can build around, because on a new build the roof holds up everything that follows it inside. When we are done you get a walkthrough, a full cleanup and magnet sweep, and the warranty documents in your hand. Advice we give often and free: do not let a general contractor talk you into shingles on a nearly flat porch or shed roof to keep one material on the job. It will leak, usually within two winters, and the fix costs more than doing it as membrane the first time.
Why Harrisburg roofs are different
Ground east of the city rises toward Linglestown and the ridge beyond it, and new houses built on those slopes catch wind that homes down in the flats along Cameron Street never feel. Additions in Hummelstown and the older parts of Camp Hill face the opposite constraint: matching a new roof plane to framing that was cut by hand, on lots where the rear yard is tight. And almost every porch and sunroom added to a Harrisburg house sits low enough that it belongs on membrane.
- All Pro Home Improvement and Roofing
- Address: 2225 Sycamore St Suite B, Harrisburg, PA 17111
- Phone: (717) 415-5985
- Hours: Open 24 hours, seven days a week
- Licensed & insured in Pennsylvania — #PA052821
- Serving: Harrisburg and Dauphin County
- Open 24 hours
- Identifies as veteran-owned
Other roofing work we do in Harrisburg
Roof Repair in Harrisburg · Roof Replacement in Harrisburg · Metal Roofing in Harrisburg · Gutter Installation & Guards in Harrisburg · Storm Damage Roof Repair in Harrisburg
Roof Installation in nearby markets
Roof Installation in Exton · Roof Installation in Allentown · Roof Installation in Lancaster · Roof Installation in Media
Read the full roof installation service page for the technical detail that applies everywhere we work, or see everything we cover across Dauphin County.
Towns our Harrisburg office covers
Roof Installation in Harrisburg
Roof Installation in Harrisburg — common questions
Do you install roofs on new construction, or only replacements?
Both. On new construction we take the roof from bare decking through to ridge cap as a complete system, including underlayment, ice protection, flashing, and ventilation. We also handle additions, dormers, garages, and major renovations where part of the existing roof stays. Tell us the framing schedule when you call and we will fit the roof into it rather than holding the rest of the trades up.
Can you match a new addition roof to my existing shingles?
Usually close, rarely perfect. Shingles weather, so a twelve-year-old roof has lost color the new material has not, and product lines change over time. We will show you the nearest match and tell you honestly how visible the difference will be from the street. On some houses the better answer is to roof the addition and the adjoining slope together so the transition falls at a natural break.
My sunroom roof is almost flat. What goes on it?
Membrane, not shingles. Anything under roughly three-in-twelve does not shed fast enough for a lapped shingle system to stay watertight, and Harrisburg houses are full of low-slope porches, sunrooms, and rear additions. Depending on the structure and what is under it, that is TPO, EPDM, or modified bitumen, with the termination at the wall and the transition to the steep roof detailed as carefully as the field itself.
What keeps the manufacturer warranty valid on a new roof?
Installing to the manufacturer's published specification. That covers the underlayment and ice protection, the starter course, fastener type and length, the nailing pattern and placement, the exposure, and the attic ventilation ratio. Skip or shortcut any of them and the material warranty can be denied later, which is exactly when you need it. We install to spec and hand you the warranty paperwork at the final walkthrough.
Do you work with builders around Hershey and Hummelstown?
Yes. The Harrisburg office covers Dauphin County and the surrounding towns, including Hershey, Hummelstown, Linglestown, and across the Susquehanna into Camp Hill and Mechanicsburg. We are licensed, bonded and insured, and we can hold a slot in your build schedule. Call (717) 415-5985 with the plans or the framing dates and we will get you a written proposal for the roof.
Roof Installation in Harrisburg? Call (717) 415-5985.
Free, no-obligation estimates. Licensed & insured in PA, NJ, MD & DE.