Permit
Ask Harrisburg first
Under 34 Pa. Code § 403.1(b)(8), alterations to a house that make no structural change are outside the state code. The city code office can say what Harrisburg requires.
Source: 34 Pa. Code § 403.1(b)
Roof Replacement in Harrisburg, PA
The median home in Harrisburg was built in 1947; there are 24,130 of them. What the code requires when that roof is replaced, and who signs off, is below.
New Roofing Costs connects homeowners with independent local roofing contractors. We do not perform roofing work.
Call (833) 781-1806 Replacement and new roofs only · homeowners
This number connects homeowners who are planning a new roof or a full roof replacement with independent local roofing contractors. It is not for leak repairs or patch jobs. The call must come from the homeowner who decides on the roof. Calls may be recorded.
The rules for a reroof in Harrisburg
Layers
Two layers means a tear-off
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. With 85% of Harrisburg’s homes were built before 1980, ask what is under the newest layer.
Ice barrier
Set by the local climate table
IRC R905.1.2 calls for an ice barrier where Table R301.2 says so; in Pennsylvania the municipality completes that table. Harrisburg’s answer is with the city code office.
Checked against the code text on October 24, 2026. The state’s code edition and the rest of its rules: roof replacement in Pennsylvania.
Homes and roofs in Harrisburg
37% of the occupied homes in Harrisburg are lived in by their owners: 8,093 households, the people this line is for. Counting by decade, 43% before 1940, 67% before 1960, 85% before 1980 of the housing was in place, and 6% dates from 2000 on. (ACS 2020–2024.)
The housing is 14% detached houses, 43% attached single-family houses (rowhouses, twins and townhouses), 14% buildings of two to four units.
With 43% of homes attached, many roofs here meet a neighbor’s roof at a party wall. Say so on the call, and ask the contractor how the new roof will be tied in where it meets the house next door.
Older houses hide their history: ask the contractor to confirm the deck (board or sheet) and every layer above it before pricing, because slate or two layers mean a full tear-off.
Of the 31 Dauphin County municipalities on this site, Harrisburg has the 7th largest share of homes built before 1980: 85%, against a county range of 31% to 100%.
ZIP codes: 17101 · 17102 · 17103 · 17104 · 17120
Harrisburg and the towns around it
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Harrisburg | 1947 | 85% | 37% | 43% | 19 |
| Wormleysburg | 1969 | 64% | 44% | 12% | 18 |
| Penbrook | 1952 | 78% | 57% | 32% | 19 |
| Lemoyne | 1949 | 85% | 55% | 26% | 19 |
| Paxtang | 1938 | 100% | 83% | 21% | 22 |
| East Pennsboro | 1978 | 52% | 68% | 21% | 18 |
Median built: median year the homes were built. Before 1980: share of homes built then. Owners: share of homes that are owner-occupied. Row, twin: share of homes that are rowhouses, twins or townhouses. Census ACS 2020–2024. Hail days: days with hail of 1 inch or larger within 10 miles, 2006–2025, NOAA Storm Prediction Center.
Hail and storms near Harrisburg
Since 2006 the National Weather Service has logged hail of 1 inch or larger on 19 separate days within 10 miles of Harrisburg; the largest was 1.75 in on June 3, 2023.
That is more hail days than 89% of the places in the state on this site.
At the county level, Harrisburg shares Dauphin County’s record of 5 storm disaster declarations since 2006, the newest DR-4618 (Remnants of Hurricane Ida, September 2021). (OpenFEMA.)
Storm reports are what observers logged, not a measure of damage to any roof. When wind or hail damage means a new roof.
What goes on the roof next
Lifespans come from HUD’s capital-needs table, not from a brochure. More in the guides to shingles, metal, slate and flat roofs.
| Material | HUD useful life | Fits a house like | Watch for |
|---|---|---|---|
| Asphalt shingles | 20 years | Most pitched roofs; 14% of homes here are detached | Wind class set by the design wind speed (IRC Table R905.2.4.1) |
| Metal (standing seam, panels) | 50 years | Simple roofs with long, unbroken slopes | A complete standing-seam system may go over the old roof (R908.3.1) |
| Slate | 75 years | Older houses; 43% here predate 1940 | Sound slate can be reused (R908.5); broken slate cannot |
| Flat roof: EPDM or TPO | 15 years | Low-slope roofs and rear sections (43% of homes here are attached) | Seams at walls and drainage |
Checking a contractor in Pennsylvania
Pennsylvania’s home improvement law (HICPA § 3, § 6) requires registration with the Attorney General from $5,000 a year of such work and puts the number on every estimate; ask for it in Harrisburg and look it up.
Contracts, deposits and the right to cancel: checking a roofing contractor. What moves the price: new roof cost in Pennsylvania.
Questions about a new roof in Harrisburg
Does a roof replacement in Harrisburg need a permit?
Ask Harrisburg first. Under 34 Pa. Code § 403.1(b)(8), alterations to a house that make no structural change are outside the state code. The city code office can say what Harrisburg requires.
Is a roof-over allowed in Harrisburg, or is it a tear-off?
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. With 85% of Harrisburg’s homes were built before 1980, ask what is under the newest layer.
When were most homes in Harrisburg built?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Harrisburg was built in 1947, 85% of homes were built before 1980, 37% are owner-occupied.
How many hail days has Harrisburg had?
Hail of 1 inch or larger was reported on 19 days within 10 miles of Harrisburg from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
What license or registration should a roofer in Harrisburg have?
Pennsylvania’s home improvement law (HICPA § 3, § 6) requires registration with the Attorney General from $5,000 a year of such work and puts the number on every estimate; ask for it in Harrisburg and look it up.
What they will ask on the phone
- Your address or ZIP code in Harrisburg
- Whether the house is detached, a twin or a rowhouse, and how many stories
- What covers the roof now and about when it went on
- Whether there is one layer or more, if you know
- That the job is a full replacement or a new roof, and your timing
- Whether the house is in a historic district or an HOA
- That you own the home and decide on the roof
The full list: before you call.